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Front matter pg P001; DOI: 10.1039/P198100FP001 |
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Polycondensed nitrogen heterocycles. Part 8. Pyrrolo[3,2-b]indole Enrico Aiello Gaetano Dattolo and Girolamo Cirrincione pg 1; DOI: 10.1039/P19810000001 |
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Notices to authors pg X001; DOI: 10.1039/P1981000X001 |
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Index pages pg A001; DOI: 10.1039/P198100BA001 |
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On 1-(3,5-dimethylpyrazolyl)phenazinyl-2-nitrene Angelo Albini Gian Franco Bettinetti and Giovanna Minoli pg 4; DOI: 10.1039/P19810000004 |
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External activation of epoxides by polarising groups borne by the nucleophile David R. Burfield Teng-Kok Khoo and Roger H. Smithers pg 8; DOI: 10.1039/P19810000008 |
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Synthetic studies of carbohydrate derivatives by photochemical reactions. Part 16. Synthesis of DL-apiose derivatives by photochemical cycloaddition of 1,3-dihydroxypropan-2-one derivatives with ethenediol or ethenol derivatives Younosuke Araki Jun-ichi Nagasawa and Yoshiharu Ishido pg 12; DOI: 10.1039/P19810000012 |
The reaction of some 1 ,2- and 2,3-methylene steroids with hydrobromic acidJames R. Hanson and Steve G. Knights pg 24; DOI: 10.1039/P19810000024 |
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Errata pg X024; DOI: 10.1039/P1981000X024 |
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Applications of substituted arylacetaldehydes in the total synthesis of mesembrane alkaloids. Part 2. An alternative synthesis of ()-sceletium alkaloid A4 Craig P. Forbes and George L. Wenteler pg 29; DOI: 10.1039/P19810000029 |
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vic-Iodothiocyanates and iodoisothiocyanates. Part 3. Further preparations, and the formation of 2-alkoxy-2-thiazolines Richard C. Cambie David Chambers Peter S. Rutledge Paul D. Woodgate and Sheila D. Woodgate pg 33; DOI: 10.1039/P19810000033 |
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vic-Iodothiocyanates and iodoisothiocyanates. Part 4. The synthesis of 2-substituted-2-thiazolines Richard C. Cambie David Chambers Peter S. Rutledge and Paul D. Woodgate pg 40; DOI: 10.1039/P19810000040 |
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vic-Iodothiocyanates and iodoisothiocyanates. Part 5. Reactions of iodoisothiocyanates with sulphur nucleophiles Richard C. Cambie Gregory D. Mayer Peter S. Rutledge and Paul D. Woodgate pg 52; DOI: 10.1039/P19810000052 |
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Bromothiocyanation of alkenes Richard C. Cambie David S. Larsen Peter S. Rutledge and Paul D. Woodgate pg 58; DOI: 10.1039/P19810000058 |
Afroside, a 15 -hydroxycardenolideH. T. Andrew Cheung Reginald G. Coombe William T. L. Sidwell and Thomas R. Watson pg 64; DOI: 10.1039/P19810000064 |
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Cycloaddition reactions of cycloimmonium ylides with triphenylcyclopropene Kiyoshi Matsumoto and Takane Uchida pg 73; DOI: 10.1039/P19810000073 |
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The reactions of 1,2,3-triazolo[1,5-a]pyridine with electrophiles Gurnos Jones D. Robert Sliskovic Beverley Foster John Rogers Anthony K. Smith Mee Yin Wong and Anthony C. Yarham pg 78; DOI: 10.1039/P19810000078 |
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Syntheses of the ()-[n]-gingerols (pungent principles of ginger) and related compounds through regioselective aldol condensations: relative pungency assays Phillip Denniff Ian Macleod and Donald A. Whiting pg 82; DOI: 10.1039/P19810000082 |
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Synthetic studies of withanolides. Part 2. Synthesis of 4a,5-epoxy-4a,5,6,7,8,8a-hexahydro-4-hydroxy-8a-methylnaphthalen-1(4H)-one and related compounds Masao Hirayama Shunzo Fukatsu and Nobuo Ikekawa pg 88; DOI: 10.1039/P19810000088 |
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Synthesis and absolute stereochemistry of (+)- and (–)-benz[a]anthracene 8,9-oxide and derived mammalian liver metabolites of benz[a]-anthracene Derek R. Boyd Kenneth A. Dawson Guru S. Gadaginamath James G. Hamilton John F. Malone and Narain D. Sharma pg 94; DOI: 10.1039/P19810000094 |
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Reactions of 2-chloro-NN-diethyl-1,1,2-trifluoroethylamine with alcohols. Part 3. In the presence of lithium chloride; preparation of chlorogibberellins Brian E. Cross and Ian C. Simpson pg 98; DOI: 10.1039/P19810000098 |
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Syntheses of two naturally occurring monoterpenes with the santolinyl skeleton Derek V. Banthorpe and Paul N. Christou pg 105; DOI: 10.1039/P19810000105 |
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The different behaviour of cyclohexanones and their enamines in the reaction with methyl (E)- and (Z)-styryl sulphone Silvio Fabrissin Silvana Fatutta and Amerigo Risaliti pg 109; DOI: 10.1039/P19810000109 |
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Kinetic resolution of sulphoxides by chiral poly(N-alkyliminoalanes) Rita Annunziata Guido Borgogno Fernando Montanari Silvio Quici and Salvatore Cucinella pg 113; DOI: 10.1039/P19810000113 |
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Flavonoid epoxides. Part 16. Synthesis and base-catalysed rearrangement of aurone epoxides Brian A. Brady Michael Geoghegan Kenneth D. McMurtrey and W. Ivo O'Sullivan pg 119; DOI: 10.1039/P19810000119 |
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Synthesis of oxa-analogues of zearalanone Robert J. Bass Bernard J. Banks Michael R. G. Leeming and Michael Snarey pg 124; DOI: 10.1039/P19810000124 |
Long chain phenols. Part 17. The synthesis of 5-[(Z)-pentadec-8-enyl]resorcinol,  cardol monoene, and of 5-[(ZZ)-pentadec-8,11-dienyl]-resorcinol dimethyl ether, cardol diene dimethyl etherChristopher J. Baylis Stanley W. D. Odle and John H. P. Tyman pg 132; DOI: 10.1039/P19810000132 |
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Factors affecting the photoaddition reactions of diphenylmethane Andrew Gilbert and Jonathan C. Lane pg 142; DOI: 10.1039/P19810000142 |
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The structure of glutaconic anhydride and the synthetic utility of its Diels–Alder adduct with cyclopentadiene Stuart P. Briggs David I. Davies Roger F. Newton and Derek P. Reynolds pg 146; DOI: 10.1039/P19810000146 |
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The synthesis of the 9,11-hydroxyethano-prostaglandin endoperoxide H2 analogue Stuart P. Briggs David I. Davies Roger F. Newton and Derek P. Reynolds pg 150; DOI: 10.1039/P19810000150 |
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19-Hydroxy-steroids. Part 7. Boron trifluoride-catalysed reactions of 19-hydroxy- and 19-acetoxy-5,6-epoxy-steroids Harold Mastalerz and Peter Morand pg 154; DOI: 10.1039/P19810000154 |
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Preparation of gibberellins A9 and A20 from gibberellic acid Zvitendo J. Duri Braulio M. Fraga and James R. Hanson pg 161; DOI: 10.1039/P19810000161 |
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Polyketoenols and chelates. New types of xanthyrones lacking enolised side-chain termini: their reactions with magnesium methoxide S. Richard Baker Leslie Crombie and Roderick V. Dove pg 165; DOI: 10.1039/P19810000165 |
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Polyketoenols and chelates. The mechanism by which glaucophanic enols are formed S. Richard Baker and Leslie Crombie pg 172; DOI: 10.1039/P19810000172 |
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Polyketoenols and chelates. Glaucyrones and their reactions with magnesium methoxide S. Richard Baker and Leslie Crombie pg 178; DOI: 10.1039/P19810000178 |
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Investigation of crystal and solution structures of glaucyrones by X-ray, nuclear magnetic resonance, and ultraviolet methods S. Richard Baker Michael J. Begley and Leslie Crombie pg 182; DOI: 10.1039/P19810000182 |
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Chemically and photochemically induced radical couplings of xanthyrones and glaucyrones S. Richard Baker Michael J. Begley and Leslie Crombie pg 190; DOI: 10.1039/P19810000190 |
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Photochromic heterocyclic fulgides. Part 1. Rearrangement reactions of (E)--3-furylethylidene(isopropylidene)succinic anhydride Harry G. Heller and Stephen Oliver pg 197; DOI: 10.1039/P19810000197 |
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Photochromic heterocyclic fulgides. Part 2. Electrocyclic reactions of (E)--2,5-dimethyl-3-furylethylidene(alkyl-substituted methylene)succinic anhydrides Paul J. Darcy Harry G. Heller Peter J. Strydom and John Whittall pg 202; DOI: 10.1039/P19810000202 |
Aromatic amines and their derivatives. Part 3. The synthesis and crystal structure of 4,4 -NN-tetramethyl-NN-dinitroso-2,2-methylenedianilinePinakpani Chakrabarti Kailasam Venkatesan Theodore Stanley Cameron Türsen Demir and Robert A. Shaw pg 206; DOI: 10.1039/P19810000206 |
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Synthesis, stereochemistry, and rearrangement of thioxanthen-10-io-(bismethoxycarbonyl)methanides and their 9-alkyl derivatives Yasumitsu Tamura Chisato Mukai Noriko Nakajima Masazumi Ikeda and Masaru Kido pg 212; DOI: 10.1039/P19810000212 |
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New piperazinedione metabolites of Gliocladium deliquescens James R. Hanson and Margaret A. O'Leary pg 218; DOI: 10.1039/P19810000218 |
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Isolation of three new isochroman-3-one metabolites from Oidiodendron rhodogenum Robak Graham C. Crawley pg 221; DOI: 10.1039/P19810000221 |
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The alkylation and ring-expansion of chromones by diazoalkanes; reluctance of oxygen to engage in sigmatropic shifts Francis M. Dean and Robert S. Johnson pg 224; DOI: 10.1039/P19810000224 |
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Asymmetric induction. Part 3. Asymmetric reduction of ketones with amine-boranes in the presence of acids Michael F. Grundon David G. McCleery and John W. Wilson pg 231; DOI: 10.1039/P19810000231 |
Photo-induced transformations. Part 51. Photo- and thermally-induced rearrangements of hypoiodites of steroidal homoallyl alcohols. The formation of some oxygen heterocycles via photo- and thermally-induced rearrangements of 3-hydroxy- 5-steroid hypoiodites in the presence of mercury(II) oxide and iodineHiroshi Suginome Akio Furusaki Kimitoshi Kato Norio Maeda and Fumihiko Yonebayashi pg 236; DOI: 10.1039/P19810000236 |
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Controlling the outcome of a carbocation-initiated cyclisation Ian Fleming and Andrew Pearce pg 251; DOI: 10.1039/P19810000251 |
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The formation of allyl sulphides by phenylthio-migration: control by silicon Ian Fleming Ian Paterson and Andrew Pearce pg 256; DOI: 10.1039/P19810000256 |
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A novel -hydroxydihydrochalcone from the heartwood of Pterocarpus angolensis D.C.: absolute configuration, synthesis, photochemical transformations, and conversion into -methyldeoxybenzoins Barend C. B. Bezuidenhoudt E. Vincent Brandt and David G. Roux pg 263; DOI: 10.1039/P19810000263 |
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Preparation of lactones via tricarbonyliron–lactone complexes Gary D. Annis Steven V. Ley Christopher R. Self and Ramamoorthy Sivaramakrishnan pg 270; DOI: 10.1039/P19810000270 |
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A reinvestigation on the structure of the capsular polysaccharide from Pneumococcus Type IX Subhas B. Bhattacharya and C. V. N. Rao pg 278; DOI: 10.1039/P19810000278 |
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(4R)-(—)-O-methyljoubertiamine and O-methyldihydrojoubertiamine, two minor alkaloids from Sceletium subvelutium L. Bolus Jacobus J. Nieuwenhuis (the late) Franz Strelow Heinrich F. Strauss and Adriaan Wiechers pg 284; DOI: 10.1039/P19810000284 |
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13C nuclear magnetic resonance spectra of the Senecio alkaloids, retrorsine, swazine, isoline, and hygrophylline Siegfried E. Drewes Ivan Antonowitz Perry T. Kaye and Philip C. Coleman pg 287; DOI: 10.1039/P19810000287 |
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Studies on the syntheses of heterocyclic compounds. Part 865. A novel synthesis of indole derivatives by intramolecular nucleophilic aromatic substitution Tetsuji Kametani Tatsushi Ohsawa and Masataka Ihara pg 290; DOI: 10.1039/P19810000290 |
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Photochemical reactions of substituted benzenes with aliphatic amines Andrew Gilbert Stefan Krestonosich and David L. Westover pg 295; DOI: 10.1039/P19810000295 |
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Formation of diphenyl ethers from cyclohexa-2,5-dienones via 4-phenoxy-4-(1-alkoxy)cyclohexa-2,5-dienones as probable intermediates Matti Karhu pg 303; DOI: 10.1039/P19810000303 |
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On the stereochemistry of the decarboxylation of (2S)-histidine catalysed by histidine decarboxylase from Clostridium welchii(E.C.4.1.1.22) Enzo Santaniello Ada Manzocchi and Pier Antonio Biondi pg 307; DOI: 10.1039/P19810000307 |
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Studies relating to the ferredoxins. Part 3. The synthesis of some cysteine–glycine peptides for iron–sulphur complexing studies Ambikaipakan Balasubramaniam Roger J. Burt George Christou Brian Ridge and H. N. Rydon pg 310; DOI: 10.1039/P19810000310 |
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Tritiated peptides. Part 9. Synthesis of [3,5-3H2-Tyr12]- and [2,5-3H2-His20]-human calcitonin Derek E. Brundish and Roy Wade pg 318; DOI: 10.1039/P19810000318 |
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Octaethyl-21H,24H-bilin-1,19-dione (octaethylbilatriene-abc) Raymond Bonnett Dennis G. Buckley and Dariush Hamzetash pg 322; DOI: 10.1039/P19810000322 |
Synthesis of blood-group substances. Part 11. Synthesis of the trisaccharide O--D-galactopyranosyl-(1  3)-O--D-galactopyranosyl-(1 4)-2-acetamido-2-deoxy-D-glucopyranoseJean-Claude Jacquinet Danielle Duchet Marie-Louise Milat and Pierre Sinay pg 326; DOI: 10.1039/P19810000326 |
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Meso-ionic compounds. Part 12. Synthesis of 1-alkyl-4-oxopyrimido-[1,2-a]-S-triaziniumolates and their 4-thio-derivatives Claude V. Greco and Kanti J. Gala pg 331; DOI: 10.1039/P19810000331 |
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Synthesis of 7,8,9,10,11,12,20,21,22,23,24,25-dodecahydrodibenzo[b,m]-[1,4,12,15]tetraoxacyclodocosin, a crown ether John H. P. Tyman Jesse Grundy and George R. Brown pg 336; DOI: 10.1039/P19810000336 |
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Aminolysis and hydrolysis of chromonyl oxazolones and some condensation reactions of 2-methylchromone leading to novel chromones Winton D. Jones pg 344; DOI: 10.1039/P19810000344 |
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Unsaturated compounds containing nitrogen. Part 4. Further reactions of 1-chloro-2,3-diazabutadienes with S-nucleophiles William T. Flowers John F. Robinson David R. Taylor and Anthony E. Tipping pg 349; DOI: 10.1039/P19810000349 |
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Unsaturated compounds containing nitrogen. Part 5. Reactions of 1,4-dichloro-1,4-diphenyl-2,3-diazabutadiene with nucleophiles William T. Flowers John F. Robinson David R. Taylor and Anthony E. Tipping pg 356; DOI: 10.1039/P19810000356 |
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Thiadiazoles and thiadiazolines. Part 1. Reaction of thiourea and ethylenethiourea with chlorodiazabutadienes: a new route to 4-amidino-1,3,4-thiadiazolines Syed H. Askari Stephen F. Moss and David R. Taylor pg 360; DOI: 10.1039/P19810000360 |
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Active-site-directed irreversible inhibition of glycosidases by the corresponding glycosylmethyl-(p-nitrophenyl)triazenes Philip J. Marshall Michael L. Sinnott Paul J. Smith and Danny Widdows pg 366; DOI: 10.1039/P19810000366 |
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Synthesis of O--D-galactopyranosyl-(14)-O-2-acetamido-2-deoxy--D-glucopyranosyl-(13)-D-mannose, a postulated trisaccharide of human erythrocyte membrane sialoglycoprotein Jocelyne Alais and Alain Veyrières pg 377; DOI: 10.1039/P19810000377 |
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The reactions of 1,2,3-trimethylindole and of N-alkyltetrahydrocarbazoles with trifluoroacetic anhydride A. Sydney Bailey Joanna B. Haxby Andrew N. Hilton Josephine M. Peach and Marazban H. Vandrevala pg 382; DOI: 10.1039/P19810000382 |
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A study of annular tautomerism, interannular conjugation, and methylation reactions of ortho-substituted-5-aryltetrazoles using carbon-13 and hydrogen-1 n.m.r. Spectroscopy Richard N. Butler and Victor C. Garvin pg 390; DOI: 10.1039/P19810000390 |
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Partial syntheses of [2-2H]- and [2-3H]-gibberellin A29 and [2-2H,-15,17-3H4]gibberellin A51 from gibberellin A3 Michael H. Beale and Jake MacMillan pg 394; DOI: 10.1039/P19810000394 |
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An epoxidation cis to two allylic benzoyloxy-groups Michael L. Sinnott and Danny Widdows pg 401; DOI: 10.1039/P19810000401 |
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NN-linked biazoles. Part 2. Attempted routes to the benzimidazol-1-yl radical. Synthesis of 2,2-dimethyl-1,1-bibenzimidazole Javier de Mendoza Carles Millan and Pedro Rull pg 403; DOI: 10.1039/P19810000403 |
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Synthesis of new macrocycles. Part 6. Pyridine-retronecate, a new synthetic alkaloid Siegfried E. Drewes and Andrew T. Pitchford pg 408; DOI: 10.1039/P19810000408 |
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Reaction of 1,8-dehydronaphthalene with carbon disulphide Juzo Nakayama Shigeyuki Dan and Masamatsu Hoshino pg 413; DOI: 10.1039/P19810000413 |
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Addition reactions of heterocyclic compounds. Part 74. Products from dimethyl acetylenedicarboxylate with thiourea, thioamide, and guanidine derivatives R. Morrin Acheson and John D. Wallis pg 415; DOI: 10.1039/P19810000415 |
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Comparative reactivity of substituted 4-nitrobenzylidene dichlorides with alkali Swee Hock Goh and Toh Seok Kam pg 423; DOI: 10.1039/P19810000423 |
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Inhibitors of the biosynthesis of gibberellins. Part 1. 7-Fluoro-10-fluoromethyl-1,8-dimethylgibbane-1,4a-carbolactone Keith Boulton and Brian E. Cross pg 427; DOI: 10.1039/P19810000427 |
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Inhibitors of pyrimidine biosynthesis. Part 2. The synthesis of amidine phosphonates as potential inhibitors of carbamoyl phosphate synthase Clifford J. Wharton and Roger Wrigglesworth pg 433; DOI: 10.1039/P19810000433 |
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Stereoselective routes to 14,15,17-trisubstituted-3-methoxyestra-1,3,5(10)-trienes James R. Bull and Jan Floor pg 437; DOI: 10.1039/P19810000437 |
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Attempted cycloaddition of N-ethoxycarbonylmethylenenamine to N-ethoxycarbonylazepine: formation of 4,4-bis(ethoxycarbonylamino)-diphenylmethane William S. Murphy and Krishna P. Raman pg 447; DOI: 10.1039/P19810000447 |
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The synthesis of adrenaline crown ethers David E. Fenton Donald Parkin and Roger F. Newton pg 449; DOI: 10.1039/P19810000449 |
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Nitroxide chemistry. Part 15. Reactions between bistrifluoromethyl nitroxide and benzyl alcohol, azide, chloride, and cyanide Ronald E. Banks J. Michael Birchall Robert N. Haszeldine Raymond A. Hughes Shmaiel N. Nona and Christopher W. Stephens pg 455; DOI: 10.1039/P19810000455 |
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On the reaction of thioacetals with sulphuryl chloride Philip C. Bulman-Page Steven V. Ley Judith A. Morton and David J. Williams pg 457; DOI: 10.1039/P19810000457 |
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The structure of a by-product obtained during the reduction of 2-phenyl-1-cyanoacrylic acid Wilson Baker Trevor J. King and John F. W. McOmie pg 462; DOI: 10.1039/P19810000462 |
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A new route to 4-hydroxytetralones and 1-naphthols Nigel J. P. Broom and Peter G. Sammes pg 465; DOI: 10.1039/P19810000465 |
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The synthesis of indan-1-ones and isocoumarins Rachel H. Carter Mary J. Garson Robert A. Hill James Staunton and David C. Sunter pg 471; DOI: 10.1039/P19810000471 |
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Substrate stereospecificity in the metabolism of fucosterol and isofucosterol 24,28-epoxides in Tenebrio molitor Francesco Nicotra Patrizia Pizzi Fiamma Ronchetti Giovanni Russo and Lucio Toma pg 480; DOI: 10.1039/P19810000480 |
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Three new xanthones and macluraxanthone from Rheedia benthamiana Pl. Triana (guttiferae) Franco Delle Monache Bruno Botta Marcello Nicoletti José Sidney de Barros Coêlho and Francisco Decio de Andrade Lyra pg 484; DOI: 10.1039/P19810000484 |
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Reaction of pyrimidin-2(1H)-ones and -thiones with organometallic compounds. Regioselective preparation of dihydropyrimidin-2(1H)-ones and -thiones Choji Kashima Akira Katoh Yuko Yokota and Yoshimori Omote pg 489; DOI: 10.1039/P19810000489 |
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Spirodienones. Part 2. The synthesis of some heterocyclic spirodienones by phenolic coupling Ian G. C. Coutts Michael R. Hamblin and Sheila E. Welsby pg 493; DOI: 10.1039/P19810000493 |
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Stereochemical fate of the isopropylidene methyl groups of lanosterol during the biosynthesis of isofucosterol in Pinus pinea Francesco Nicotra Fiamma Ronchetti Giovanni Russo Giuseppe Lugaro and Marilena Casellato pg 498; DOI: 10.1039/P19810000498 |
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Electrophilic and nucleophilic substitution in the triazole N-oxides and N-methoxytriazolium salts: preparation of substituted 1,2,3-triazoles Mikael Begtrup and John Holm pg 503; DOI: 10.1039/P19810000503 |
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Metabolites from the purple heartwood of Mimosoideae. Part 2. Acacia carnei maiden: isolation, synthesis, and reactions of crombeone Edward V. Brandt Daneel Ferreira and David G. Roux pg 514; DOI: 10.1039/P19810000514 |
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Amino-acids and peptides. Part 45. The protection of the thiol function of cysteine and the imidazole-N of histidine by the diphenyl-4-pyridylmethyl group Susan Coyle Allan Hallett Michael S. Munns and Geoffrey T. Young pg 522; DOI: 10.1039/P19810000522 |
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Peptide synthesis. Part 1. Preparation and use of polar supports based on poly(dimethylacrylamide) Reza Arshady Eric Atherton Derek L. J. Clive and Robert C. Sheppard pg 529; DOI: 10.1039/P19810000529 |
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Peptide synthesis. Part 2. Procedures for solid-phase synthesis using N-fluorenylmethoxycarbonylamino-acids on polyamide supports. Synthesis of substance P and of acyl carrier protein 65–74 decapeptide Eric Atherton Christopher J. Logan and Robert C. Sheppard pg 538; DOI: 10.1039/P19810000538 |
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Asymmetric induction in the Michael reaction by means of chiral phase-transfer catalysts derived from cinchona and ephedra alkaloids Stefano Colonna Alberto Re and Hans Wynberg pg 547; DOI: 10.1039/P19810000547 |
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Taiwaniaflavone and its derivatives: a new series of biflavones from Taiwania cryptomerioides Hayata Mohammad Kamil Mohammad Ilyas Wasiur Rahman Noriko Hasaka Masayoshi Okigawa and Nobusuke Kawano pg 553; DOI: 10.1039/P19810000553 |
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Photochemical behaviour of bicyclo[5.3.1]undec-1(10)-en-9-one Bruno Gioia Marzia Ballabio Egle M. Beccalli Roberto Cecchi and Alessandro Marchesini pg 560; DOI: 10.1039/P19810000560 |
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Intramolecular reactions involving positions C(2), C(6) and (C2), C(7) in the bicyclo[3.3.1]nonane ring system Roger Bishop William Parker and James Ronald Stevenson pg 565; DOI: 10.1039/P19810000565 |
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Phase-transfer catalysis using chiral catalysts. Influence of the structure of the catalyst on stereoselectivity. Part 3 Sebastián Juliá Antonio Ginebreda Joan Guixer Jaume Masana Antonio Tomás and Stefano Colonna pg 574; DOI: 10.1039/P19810000574 |
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Alkaloids of Ocotea acutangula Vittorio Vecchietti Cesare Casagrande Giorgio Ferrari Bruno Danieli and Giovanni Palmisano pg 578; DOI: 10.1039/P19810000578 |
Cyclisation of acetylenecarboxylic acid. Synthesis of  -methylenebutyrolactonesMakoto Yamamoto pg 582; DOI: 10.1039/P19810000582 |
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Synthetic applications of N–N linked heterocycles. Part 9. Preparation of -(4-pyridyl)nitroalkanes and N-(4-pyridyl)azoles by regiospecific attack of nitroalkyl and azolyl anions on N-(2,6-dimethyl-4-oxopyridin-1-yl)pyridinium salts Alan R. Katritzky James G. Keay David N. Rogers Michael P. Sammes and Christopher W. F. Leung pg 588; DOI: 10.1039/P19810000588 |
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Cyclopentanoids from phenol. Part 4. 3-Substituted 4-hydroxycyclopent-2-enones Robert M. Christie Melvyn Gill and Rodney W. Rickards pg 593; DOI: 10.1039/P19810000593 |
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Cyclopentanoids from phenol. Part 5. Terminally functionalised 2- and 3-alkyl-4-hydroxycyclopent-2-enones. A versatile approach to prostanoids Melvyn Gill and Rodney W. Rickards pg 599; DOI: 10.1039/P19810000599 |
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Formation and rearrangement of adducts from benzyne and substituted 2,1,3-benzoselenadiazoles Martin R. Bryce Colin D. Reynolds Peter Hanson and John M. Vernon pg 607; DOI: 10.1039/P19810000607 |
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Synthesis and stereomutation of optically active -cyanosulphoxides Rita Annunziata Mauro Cinquini Stefano Colonna and Franco Cozzi pg 614; DOI: 10.1039/P19810000614 |
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General synthesis of 1,4,2-benzodithiazines by thermolysis of 1,3-benzodithiol-2-yl azides Juzo Nakayama Michihiro Ochiai Kaoru Kawada and Masamatsu Hoshino pg 618; DOI: 10.1039/P19810000618 |
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Oxymetallation. Part 13. Synthesis of bicyclic peroxides via peroxymercuriation of cyclic dienes A. J. Bloodworth Jamil A. Khan and M. E. Loveitt pg 621; DOI: 10.1039/P19810000621 |
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Quinoline alkaloids. Part 22. Synthesis of the monoterpenoid quinoline alkaloid, bucharaine Michael F. Grundon V. N. Ramachandran and Michael E. Donnelly pg 633; DOI: 10.1039/P19810000633 |
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Fischer indole synthesis of 3-acyl- and 3-alkoxy-carbonylindoles Keith Mills Ibtisam K. Al Khawaja Fowzia S. Al-Saleh and John A. Joule pg 636; DOI: 10.1039/P19810000636 |
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Synthesis of 4-acyl- and 4-alkoxy-carbonylpyrazoles Fowzia S. Al-Saleh Ibtisam K. Al Khawaja and John A. Joule pg 642; DOI: 10.1039/P19810000642 |
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Total synthesis of prostaglandin-F2, and the 9-O-benzyl derivatives of prostaglandins-F2, -F1, -D2, and -D1 Richard J. Cave Roger F. Newton Derek P. Reynolds and Stanley M. Roberts pg 646; DOI: 10.1039/P19810000646 |
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Reactions of dialkylbromoboranes with alkali metal hydrides in the presence of alkenes. Synthesis of mixed trialkylboranes (RA2RBB) in solution Peter J. Maddocks Andrew Pelter Keith Rowe Keith Smith and Chitti Subrahmanyam pg 653; DOI: 10.1039/P19810000653 |
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Purines, pyrimidines, and imidazoles. Part 57. Reactions of some oxazolino-xylofuranose derivatives Hopeton J. Brown Gordon Shaw and David Wright pg 657; DOI: 10.1039/P19810000657 |
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Reactions of N-substituted pyridinium cations with carbanions: 5,6,8,9-tetrahydro-7-phenylbisbenzo[ah]acridine, a superior leaving group Alan R. Katritzky and Sukhpal S. Thind pg 661; DOI: 10.1039/P19810000661 |
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[2n]Para[44–n]paracyclophanes; synthesis, structure, and cyclic voltammetry Bengt Thulin pg 664; DOI: 10.1039/P19810000664 |
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Synthetic applications of N–N linked heterocycles. Part 11. Regiospecific synthesis of dialkyl pyridin-4-yl-, quinolin-4-yl-, and isoquinolin-1-yl-phosphonates Alan R. Katritzky James G. Keay and Michael P. Sammes pg 668; DOI: 10.1039/P19810000668 |
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Allylic chlorination of gibberellins A3 and A7 methyl esters and of gibberellin A3: preparation of gibberellin A5 John R. Bearder Paul S. Kirkwood and Jake MacMillan pg 672; DOI: 10.1039/P19810000672 |
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General routes to 4-methyl-2-substituted-furans: a total synthesis of pleraplysillin-2, a metabolite of the sponge, Pleraplysilla spinifera David W. Knight and David C. Rustidge pg 679; DOI: 10.1039/P19810000679 |
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The reaction between bis(trimethylsilyl)cyclopentadiene and dichloroketen, and the Diels–Alder reactions between N-phenylmaleimide and two silylated methylcyclopentadienes Ian Fleming and Richard Vaughan Williams pg 684; DOI: 10.1039/P19810000684 |
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Chemistry of quinones. Part 7. Synthesis of anthracyclinone analogues via Diels–Alder reactions of 1,4-anthraquinones Dharmendra N. Gupta Philip Hodge and Naeem Khan pg 689; DOI: 10.1039/P19810000689 |
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The conversion of 5,6-dihydro-4-methoxy-2-pyrones into 3-alkyl-5-hydroxypyrazoles Mikdad T. Ayoub Mowafak Y. Shandala Galia M. Gussba Bashi and Andrew Pelter pg 697; DOI: 10.1039/P19810000697 |
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Synthesis of some substituted pyrrolidines from cyclopropyl carbonyl compounds Keith W. Blake Iain Gillies and Ronald C. Denney pg 700; DOI: 10.1039/P19810000700 |
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18-Substituted steroids. Part 8. An improved synthesis of 11,18,21-trihydroxypregn-4-ene-3,20-dione (18-hydroxycorticosterone) David N. Kirk and Christopher J. Slade pg 703; DOI: 10.1039/P19810000703 |
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Heterocyclic prostaglandin analogues. Part 3. The relationship of configuration to biological activity for some hydantoin prostaglandin analogues Michael A. Brockwell A. Gordon Caldwell Norman Whittaker and Michael J. Begley pg 706; DOI: 10.1039/P19810000706 |
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Cycloaddition reactions of quinoneimine N-oxides and of fluorenoneimine N-oxide: exocyclic nitrones conjugated with electron-withdrawing rings Jaffar A. Damavandy and Richard A. Y. Jones pg 712; DOI: 10.1039/P19810000712 |
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Novel polysulphur bridged metacyclophanes from the iron-catalysed reaction of bis-(2,4-dimethoxyphenyl) sulphide with disulphur dichloride. Evidence for the cleavage of the carbon–sulphur bond by electrophilic agents Francesco Bottino and Sebastiano Pappalardo pg 718; DOI: 10.1039/P19810000718 |
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A synthesis of pseudouridine Daniel M. Brown and Richard C. Ogden pg 723; DOI: 10.1039/P19810000723 |
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Diazepines. Part 25. Preparation and properties of 6-aryl-2,3-dihydro-1,4-diazepinium salts. Electronic interaction between the rings and steric inhibition thereof Douglas Lloyd Kanwaljit S. Tucker and Donald R. Marshall pg 726; DOI: 10.1039/P19810000726 |
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Photochemical rearrangement of dialkylphosphinic azides in methanol and other protic solvents Martin J. P. Harger and Michael A. Stephen pg 736; DOI: 10.1039/P19810000736 |
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Preparation of polyether polycarboxylic acids containing quaternary carbon atoms in the backbone Robert McCrindle and Alan J. McAlees pg 741; DOI: 10.1039/P19810000741 |
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Photochemical reactions of aromatic compounds. Part 34. Direct photocyanation of arenes with sodium cyanide in the presence of electron acceptors Masahide Yasuda Chyongjin Pac and Hiroshi Sakurai pg 746; DOI: 10.1039/P19810000746 |
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Reaction of vinyl sulphone with -metallated nitriles Toshio Agawa Yasuo Yoshida Mitsuo Komatsu and Yoshiki Ohshiro pg 751; DOI: 10.1039/P19810000751 |
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Stereoselective cyclization assisted by the selenyl group. Biogenetic-type synthesis in the p-menthane series Tetsuji Kametani Hiroshi Kurobe and Hideo Nemoto pg 756; DOI: 10.1039/P19810000756 |
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Stereoselective synthesis of solanesol and all-trans-decaprenol Kikumasa Sato Seiichi Inoue Akira Onishi Nobuhiko Uchida and Nobuto Minowa pg 761; DOI: 10.1039/P19810000761 |
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Oxidative coupling. Part 11. Approaches to the synthesis of bikaverin John R. Lewis and John G. Paul pg 770; DOI: 10.1039/P19810000770 |
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Reactions of carbonyl compounds with tervalent phosphorus reagents. Part 10. Monochlorophosphines and aldehydes Norman J. De' ath J. Allen Miller M. John Nunn and Denis Stewart pg 776; DOI: 10.1039/P19810000776 |
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Reactions of carbonyl compounds with tervalent phosphorus reagents. Part 11. A re-examination of the reaction of benzaldehyde with phosphorus trichloride in the presence of acetic anhydride Jacqui K. Michie and J. Allen Miller pg 785; DOI: 10.1039/P19810000785 |
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Total synthesis of bovine pancreatic ribonuclease A. Part 1. Synthesis of the protected pentadecapeptide ester (positions 110–124) Nobutaka Fujii and Haruaki Yajima pg 789; DOI: 10.1039/P19810000789 |
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Total synthesis of bovine pancreatic ribonuclease A. Part 2. Synthesis of the protected hexatriacontapeptide ester (positions 89–124) Nobutaka Fujii and Haruaki Yajima pg 797; DOI: 10.1039/P19810000797 |
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Total synthesis of bovine pancreatic ribonuclease A. Part 3. Synthesis of the protected hexapentacontapeptide ester (positions 69–124) Nobutaka Fujii and Haruaki Yajima pg 804; DOI: 10.1039/P19810000804 |
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Total synthesis of bovine pancreatic ribonuclease A. Part 4. Synthesis of the protected tetraoctacontapeptide ester (positions 41–124) Nobutaka Fujii and Haruaki Yajima pg 811; DOI: 10.1039/P19810000811 |
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Total synthesis of bovine pancreatic ribonuclease A. Part 5. Synthesis of the protected S-protein (positions 21–124) and the protected S-peptide (positions 1–20) Nobutaka Fujii and Haruaki Yajima pg 819; DOI: 10.1039/P19810000819 |
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Total synthesis of bovine pancreatic ribonuclease A. Part 6. Synthesis of RNase A with full enzymic activity Nobutaka Fujii and Haruaki Yajima pg 831; DOI: 10.1039/P19810000831 |
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Intramolecular cyclisations of biphenyl-2-carboxyl radicals: evidence for a II-state aroyloxyl radical Stephen A. Glover Stephen L. Golding André Goosen and Cedric W. McCleland pg 842; DOI: 10.1039/P19810000842 |
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Depsidone synthesis. Part 15. New metabolites of the lichen Buellia canescens(Dicks.) De Not: novel phthalide catabolites of depsidones Tony Sala Melvyn V. Sargent and John A. Elix pg 849; DOI: 10.1039/P19810000849 |
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Depsidone synthesis. Part 16. Benzophenone–grisa-3,5-diene-2,3-dione–depsidone interconversion: a new theory of depsidone biosynthesis Tony Sala and Melvyn V. Sargent pg 855; DOI: 10.1039/P19810000855 |
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Depsidone synthesis. Part 17. The photochemistry of grisa-3,5-diene-2,3-diones Tony Sala and Melvyn V. Sargent pg 870; DOI: 10.1039/P19810000870 |
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Depsidone synthesis. Part 18. Dihydronidulin (the late) Peter F. Finlay-Jones Tony Sala and Melvyn V. Sargent pg 874; DOI: 10.1039/P19810000874 |
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Depsidone synthesis. Part 19. Some -orcinol depsidones Tony Sala and Melvyn V. Sargent pg 877; DOI: 10.1039/P19810000877 |
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Depsidone synthesis. Part 20. Lecideoidin and dechlorolecideoidin Peter M. McEwen and Melvyn V. Sargent pg 883; DOI: 10.1039/P19810000883 |
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v-Triazolo[4,5-d]pyrimidines (8-azapurines). Part 23. Synthesis and properties of N-alkyl-1,6-dihydro-8-azapurin-2-thiones. Migration (N N) of acyl group in 5-aminomethyl-4-oxamoylamino-1,2,3-triazoles Adrien Albert pg 887; DOI: 10.1039/P19810000887 |
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Derivatives of 2-methylenepenam: analogues of clavulanic acid Edward G. Brain Nigel J. P. Broom and Roger I. Hickling pg 892; DOI: 10.1039/P19810000892 |
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Thermal rearrangement of 1-(3-methylbut-2-enyloxy)-4-prop-1-enylbenzene (feniculin): a new synthesis of anisoxide and re-investigation of the constituents of star anise oil H. Martyn Okely and Michael F. Grundon pg 897; DOI: 10.1039/P19810000897 |
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Asymmetric reduction of aromatic ketones with reagents prepared from sodium borohydride and various carboxylic acids in the presence of 1,2:5,6-di-O-isopropylidene--D-glucofuranose Akira Hirao Shinichi Itsuno Masaki Owa Satoru Nagami Hidenori Mochizuki Hanafi H. A. Zoorov Seiichi Niakahama and Noboru Yamazaki pg 900; DOI: 10.1039/P19810000900 |
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Stereochemical studies on aeromatic amino-acids. Part 4. Absolute configuration of 3-Amino-2-phenylpropionic acid Juan A. Garbarino and Oswaldo Nuñez pg 906; DOI: 10.1039/P19810000906 |
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Synthesis of optically active pyrrolizidine bases David J. Robins and Santi Sakdarat pg 909; DOI: 10.1039/P19810000909 |
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Studies on the structure of some derivatives of 1,3-thiazolidine-2-thione and 2-1,3-thiazoline-2-thiol Eiichi Fujita Yoshimitsu Nagao Kaoru Seno Sachiko Takao Tadayo Miyasaka Michio Kimura and William H. Watson pg 914; DOI: 10.1039/P19810000914 |
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Studies on the syntheses of heterocyclic compounds. Part 875. The total stereoselective retro mass spectral synthesis of ()-emetine Tetsuji Kametani Samuel A. Surgenor and Keiichiro Fukumoto pg 920; DOI: 10.1039/P19810000920 |
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Stereocontrolled addition of some sulphenyl halides to bicyclo[3.2.0]-hept-2-en-6-ones and modification of the adducts Martin G. Bigg Stanley M. Roberts and Hans Suschitzky pg 926; DOI: 10.1039/P19810000926 |
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Stereoselective enzyme-catalysed oxidation–reduction reactions of thioacetals–thioacetal sulphoxides by fungi Barbara J. Auret Derek R. Boyd Fiona Breen Ruth M. E. Greene and Peter M. Robinson pg 930; DOI: 10.1039/P19810000930 |
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Reduction of -arylthio- or -alkylthio--unsaturated ketones Takehiko Nishio and Yoshimori Omote pg 934; DOI: 10.1039/P19810000934 |
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Reactions involving fluoride ion. Part 22. Dimerisation of perfluoro-2,3-dimethylbutadiene and related reactions Richard D. Chambers Andrew A. Lindley and Harold C. Fielding pg 939; DOI: 10.1039/P19810000939 |
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Photochemical ring opening of 1-arylpyrimidin-2(1H)-ones Takehiko Nishio Katsuhiro Katahira and Yoshimori Omote pg 943; DOI: 10.1039/P19810000943 |
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Syntheses and properties of trimethyltetradehydro[15]annulenones and the benzannelated derivatives J  ro Ojima Kazuyo Wada Keiko Kanazawa and Yukiko Nakagawa pg 947; DOI: 10.1039/P19810000947 |
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Studies on the syntheses of heterocyclic compounds. Part 876. The chiral total synthesis of brevianamide E and deoxybrevianamide E Tetsuji Kametani Naoaki Kanaya and Masataka Ihara pg 959; DOI: 10.1039/P19810000959 |
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Studies on the syntheses of heterocyclic compounds. Part 877. An alternative synthesis of protected ()-thienamycin and a related compound Tetsuji Kametani Shyh-Pyng Huang Takayasu Nagahara Shuichi Yokohama and Masataka Ihara pg 964; DOI: 10.1039/P19810000964 |
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The reactions of tris(trimethylsilyl)methyl-lithium with some carbon electrophiles Ian Fleming and Christopher D. Floyd pg 969; DOI: 10.1039/P19810000969 |
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Reaction of 1,3-dioxolans with iodine monochloride: the scope and mechanism of formation of 1,3-dioxolan-2-ylium dichloroiodates(I) André Goosen and Cedric W. McCleland pg 977; DOI: 10.1039/P19810000977 |
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Iminyls. Part 7. Intramolecular hydrogen abstraction; synthesis of heterocyclic analogues of -tetralone Alexander R. Forrester Russell J. Napier and Ronald H. Thomson pg 984; DOI: 10.1039/P19810000984 |
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Benzocyclobutenes. Part 6. Reactions of substituted benzocyclobutene-1,2-diones with o-phenylenediamine Omar Abou-Teim Nigel P. Hacker Robert B. Jansen John F. W. McOmie and David H. Perry pg 988; DOI: 10.1039/P19810000988 |
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Oxythallation adduct intermediate in hydration of terminal acetylenes by thallium(III) salt catalyst Sakae Uemura Haruo Miyoshi Masaya Okano and Katsuhiko Ichikawa pg 991; DOI: 10.1039/P19810000991 |
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A new tetracyclic sesquiterpene hydrocarbon from trans-farnesic acid; X-ray crystal structure of 8-bromomethyl-1,4-dimethyl-9-methylenetetracyclo[5.2.1.1.0]undecane Silvana Bernasconi Pierluigi Gariboldi Giancarlo Jommi Massimo Sisti and Giovanni Gasparri Fava pg 995; DOI: 10.1039/P19810000995 |
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The action of nitrogen dioxide and nitric oxide on humulene, C15H24, and humulene nitrosite, C15H24N2O3. Reaction mechanisms and isolation and characterization of reaction products Derek K. MacAlpine Andrew L. Porte and George A. Sim pg 999; DOI: 10.1039/P19810000999 |
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Organometallic compounds in organic synthesis. Part 10. Preparations and some reactions of tricarbonyl-1,3- and -1,4-dimethoxycyclohexa-1,3-dieneiron and related compounds: the preparation of the tricarbonyl-3-methoxycyclohexadienyliumiron cation Arthur J. Birch Lawrence F. Kelly and David J. Thompson pg 1006; DOI: 10.1039/P19810001006 |
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Product stereochemistry and some inhibitors of the -arabinofuranosidases of Monilinia fructigena Anthony H. Fielding Michael L. Sinnott Migel A. Kelly and Danny Widdows pg 1013; DOI: 10.1039/P19810001013 |
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Synthesis of 5,6-dihydropyran-3(4H)-one Kikumasa Sato Seiichi Inoue Tohru Tanami and Masao Ohasi pg 1015; DOI: 10.1039/P19810001015 |
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Alpinigenine from Papaver bracteatum Lindl. Restricted rotation in an unusual oxidation product David Lavie Hana Berger-Josephs Tamar Yehezkel Hugo E. Gottlieb and Elie C. Levy pg 1019; DOI: 10.1039/P19810001019 |
Minor and trace sterols in marine invertebrates. Part 20. 3 -Hydroxymethyl-A-nor-patinosterol and 3-hydroxymethyl-A-nor-dinosterol. Two new sterols with modified nucleus and side-chain from the sponge Teichaxinella morchellaLars Bohlin Ulf Sjöstrand Carl Djerassi and Brian W. Sullivan pg 1023; DOI: 10.1039/P19810001023 |
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Withaperuvin and 4-deoxyphysalolactone, two new ergostane-type steroids from Physalis peruviana(Solanaceae) Felix Frolow Anil B. Ray Mahendra Sahai Erwin Glotter Hugo E. Gottlieb and Isaac Kirson pg 1029; DOI: 10.1039/P19810001029 |
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Studies on mesoionic compounds. Part 10. Synthesis and chemical properties of mesoionic 1,2,5-thiadiazolium-3-olates Katsutada Masuda Jun Adachi and Keiichi Nomura pg 1033; DOI: 10.1039/P19810001033 |
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Conversions of thiochroman-4-ones into 1,2-benzothiazepine, benzo-[b]thiophen, and 1,2-benzisothiazole systems via sulphimide intermediates Yasumitsu Tamura Yasushi Takebe Said Mohamad M. Bayomi Chisato Mukai Masazumi Ikeda Masao Murase and Masahiro Kise pg 1037; DOI: 10.1039/P19810001037 |
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Microbiological transformations. Part 4. Microbiological transformations of 5-androstan-17-ones and of 17a-aza-D-homo-5-androstan-17-ones with the fungus Cunninghamella elegans Trevor A. Crabb John A. Saul and Roger O. Williams pg 1041; DOI: 10.1039/P19810001041 |
Synthetic photochemistry. A synthesis of the carbon skeleton found in taylorione from Mylia taylorii, using the di- -methane rearrangementGerald Pattenden and Derek Whybrow pg 1046; DOI: 10.1039/P19810001046 |
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Synthetic photochemistry. Elaboration of the tricyclo[6.3.0.0]-undecane (hirsutane) carbon skeleton by intramolecular photocyclisations of dicyclopent-1-enylmethanes Joseph S. H. Kueh Michael Mellor and Gerald Pattenden pg 1052; DOI: 10.1039/P19810001052 |
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Transacylation of cephalosporin; isolation and reactions of the imidate esters Toshinori Saito Ken Nishihata and Syunzo Fukatsu pg 1058; DOI: 10.1039/P19810001058 |
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Reactions involving fluoride ion. Part 23. Thermolytic defluorination of perfluoroalkenes in the synthesis of fluorinated dienes and cyclobutenes Richard D. Chambers Andrew A. Lindley Harold C. Fielding John S. Moilliet and Graham Whittaker pg 1064; DOI: 10.1039/P19810001064 |
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Nitroxide chemistry. Part 18. Reaction of bistrifluoromethyl nitroxide with some ethers Ronald E. Banks Alan K. Brown Robert N. Haszeldine and John Jefferson pg 1068; DOI: 10.1039/P19810001068 |
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Polyhalogenoheterocyclic compounds. Part 33. Mechanism of thermal rearrangements of perfluoropyridazine and perfluoroalkylpyridazines Richard D. Chambers W. Kenneth R. Musgrave and Colin R. Sargent pg 1071; DOI: 10.1039/P19810001071 |
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Some reactions of ethyl 2-anilino-4-oxo-4,5-dihydrothiophen-3-carboxylate Alan W. Faull and Roy Hull pg 1078; DOI: 10.1039/P19810001078 |
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Partial synthesis of ent-13-hydroxy-2-oxo-20-norgibberella-1(10),16-diene-7,19-dioic acid, a catabolite of gibberellin A29, and of related compounds Paul Gaskin Paul S. Kirkwood and Jake MacMillan pg 1083; DOI: 10.1039/P19810001083 |
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A new reaction of acid chlorides. Intramolecular ortho-chlorination Maureen Byers Alexander R. Forrester I. Lennox John and Ronald H. Thomson pg 1092; DOI: 10.1039/P19810001092 |
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Diels–Alder route to potential trichothecene precursors Robert E. Banks J. Allen Miller M. John Nunn Philip Stanley Timothy J. R. Weakley and Zakir Ullah pg 1096; DOI: 10.1039/P19810001096 |
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Latent inhibitors. Part 2. Allylic inhibitors of alcohol dehydrogenase Iain MacInnes David E. Schorstein Colin J. Suckling and Roger Wrigglesworth pg 1103; DOI: 10.1039/P19810001103 |
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Asymmetric induction in the reduction of -oxosulphoximides by sodium borohydride Rita Annunziata Mauro Cinquini and Franco Cozzi pg 1109; DOI: 10.1039/P19810001109 |
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Ene reactions: evidence that oxabicyclo[3.2.1]octanes, not oxabicyclo-[2.2.2]octanes, are formed from the AlCl3-catalysed reactions of chloral with cyclohexene and the thermal addition of chloral to cyclohexa-1,3-diene Michael J. Begley Jill P. Benner and G. Bryon Gill pg 1112; DOI: 10.1039/P19810001112 |
Preparation and reactions of novel cyclic -oxosulphonium salts obtained by the acid-induced cyclisation of 1-diazo- -phenylthio-2-alkanonesWilliam T. Flowers Ana M. Freitas Geoffrey Holt and Stuart C. Purkiss pg 1119; DOI: 10.1039/P19810001119 |
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The generation and chemistry of dianions derived from furancarboxylic acids David W. Knight and Andrew P. Nott pg 1125; DOI: 10.1039/P19810001125 |
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Intramolecular nitrene insertions into aromatic and heteroaromatic systmes. Part 7. Insertions into electron-deficient rings Robert N. Carde Peter C. Hayes Gurnos Jones and Cynthia J. Cliff pg 1132; DOI: 10.1039/P19810001132 |
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The nitration of thebaine with tetranitromethane Robert M. Allen Gordon W. Kirby and David J. McDougall pg 1143; DOI: 10.1039/P19810001143 |
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Plant proanthocyanidins. Part 7. Prodelphinidins from Pinus sylvestris Raj K. Gupta and Edwin Haslam pg 1148; DOI: 10.1039/P19810001148 |
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The structure of penduliflaworosin, a new furanoid diterpene from Croton penduliflorus E. Kayode Adesogan pg 1151; DOI: 10.1039/P19810001151 |
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Base-catalysed rearrangements involving ylide intermediates. Part 8. The preparation and some reactions of stable ammonium ylides Robert W. Jemison Sivapathasuntharam Mageswaran W. David Ollis Ian O. Sutherland and Yodhathai Thebtaranonth pg 1154; DOI: 10.1039/P19810001154 |
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Nitroxide radicals. Part 20. Formation and reactions of t-butyl p-formylphenyl nitroxide and its derivatives Alexander R. Forrester John Henderson and Stuart P. Hepburn pg 1165; DOI: 10.1039/P19810001165 |
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The carbon-13 nuclear magnetic resonance spectra of tetronate and 2-pyrone derivatives Andrew Pelter and Miqdad T. Ayoub pg 1173; DOI: 10.1039/P19810001173 |
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Preparation of tetrahydroindolizines from pyridinium and isoquinolinium ylides Alan R. Katritzky Nicholas E. Grzeskowiak and Julio Alvarez-Builla pg 1180; DOI: 10.1039/P19810001180 |
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The absolute stereochemistry of some clerodane diterpenoids from Teucrium species Martin Martinez-Ripoll Jose Fayos Benjamin Rodriguez Maria C. Garcia-Alvarez Giuseppe Savona Franco Piozzi Mariapia Paternostro and James R. Hanson pg 1186; DOI: 10.1039/P19810001186 |
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Pyranonaphthoquinone antibiotics. Part 1. Syntheses of 9-demethoxyeleutherins and 9-deoxynanaomycin A methyl ester Tadashi Kometani and Eiichi Yoshii pg 1191; DOI: 10.1039/P19810001191 |
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Pyranonaphthoquinone antibiotics. Part 2. Syntheses of ()-nanaomycin A and ()-eleutherins Tadashi Kometani Yoshio Takeuchi and Eiichi Yoshii pg 1197; DOI: 10.1039/P19810001197 |
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Acid-catalysed intramolecular C-alkylation in -unsaturated diazomethyl ketones. A new synthetic route to angularly fused cyclobutanones, bridged cyclopentanones, and -lactones Usha Ranjan Ghatak Baijayanti Sanyal Gutta O. S. V. Satyanarayana and Subrata Ghosh pg 1203; DOI: 10.1039/P19810001203 |
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Synthesis of condensed tannins. Part 1. Stereoselective and stereospecific syntheses of optically pure 4-arylflavan-3-ols, and assessment of their absolute stereochemistry at C-4 by means of circular dichroism Jacobus J. Botha Desmond A. Young Daneel Ferreira and David G. Roux pg 1213; DOI: 10.1039/P19810001213 |
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Synthesis of condensed tannins. Part 2. Synthesis by photolytic rearrangement, stereochemistry, and circular dichroism of the first 2,3-cis-3,4-cis-4-arylflavan-3-ols Jan H. van der Westhuizen Daneel Ferreira and David G. Roux pg 1220; DOI: 10.1039/P19810001220 |
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Synthesis of condensed tannins. Part 3. Chemical shifts for determining the 6- and 8-bonding positions of terminal of(+)-catechin units Hans K. L. Hundt and David G. Roux pg 1227; DOI: 10.1039/P19810001227 |
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Synthesis of condensed tannins. Part 4. A direct biomimetic approach to [4,6]- and[4,8]-biflavanoids Jacobus J. Botha Daneel Ferreira and David G. Roux pg 1235; DOI: 10.1039/P19810001235 |
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Quinones and related compounds in higher plants. Part 11. Role of 2-carboxy-2,3-dihydro-1,4-naphthoquinone and 2-carboxy-2-(3-methyl-but-2-enyl)-2,3-dihydro-1,4-naphthoquinone in the biosynthesis of naphthoquinone congeners of Catalpa ovata callus tissues Kenichiro Inoue Shinichi Ueda Yoshinori Shiobara Inami Kimura (née Wada) and Hiroyuki Inouye pg 1246; DOI: 10.1039/P19810001246 |
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Frontier-controlled cycloaddition reactions of cyclopentadienones having electron-donating or -attracting substituents: configuration of adducts and kinetic studies Masato Mori Ayako Hayamizu and Ken Kanematsu pg 1259; DOI: 10.1039/P19810001259 |
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Total synthesis of the alkaloids ()-alpinigenine and ()-cis-alpinigenine Sundaresan Prabhakar Ana M. Lobo M. Regina Tavares and Ilda M. C. Oliveira pg 1273; DOI: 10.1039/P19810001273 |
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Chiral acyl anion and enolonium ion equivalents. Asymmetric synthesis of -methoxy-aldehydes Lino Colombo Cesare Gennari Carlo Scolastico Giuseppe Guanti and Enrica Narisano pg 1278; DOI: 10.1039/P19810001278 |
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Chiral acyl anion equivalents: asymmetric synthesis of 11-deoxy-ent-prostaglandin intermediates Lino Colombo Cesare Gennari Giuseppe Resnati and Carlo Scolastico pg 1284; DOI: 10.1039/P19810001284 |
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Sulphite-ion-catalysed reversion of 5,6-dihydrothymine-6-sulphonate to thymine. A general-base-catalysed reaction Atsuko Itadani Makoto Shiragami Reiko Kawada Yusuke Wataya and Hikoya Hayatsu pg 1287; DOI: 10.1039/P19810001287 |
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Fluorinated kaurenoids. Part 2. Preparation of methyl ent-17,17,17-trifluorokaur-15-en-19-oate and ent-16,16-difluoro-17-norkauran-19-oic acid from xylopic acid Brian E. Cross Anton Erasmuson and Paolino Filippone pg 1293; DOI: 10.1039/P19810001293 |
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Biosynthesis of the aurovertins B and D. The role of methionine and propionate in the simultaneous operation of two independent biosynthetic pathways Pieter S. Steyn Robert Vleggaar and Philippus L. Wessels pg 1298; DOI: 10.1039/P19810001298 |
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Optical activity as a consequence of an N–N-chiral axis: resolution of N-benzyl-N-(1,2-dihydro-2-oxo-1-quinolyl)glycine Robert S. Atkinson and Brian D. Judkins pg 1309; DOI: 10.1039/P19810001309 |
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Synthesis of ()-6-prostaglandin I1 and ()-6-decarboxyprostaglandin I1 Mark A. W. Finch Stanley M. Roberts and Roger F. Newton pg 1312; DOI: 10.1039/P19810001312 |
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Enantio-complementary total asymmetric syntheses of prostaglandin E2 and prostaglandin F2 John Davies Stanley M. Roberts Derek P. Reynolds and Roger F. Newton pg 1317; DOI: 10.1039/P19810001317 |
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Synthesis of perfluoropolyethers by direct fluorination; a novel preparation for perfluoro(polypropylene oxide) ethers and perfluoro(polymethylene oxide) ethers Glenn E. Gerhardt and Richard J. Lagow pg 1321; DOI: 10.1039/P19810001321 |
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Vinyl anions. Part 9. Vinyl carbanions derived from acrylic esters and their -phenyl derivatives Ben Ami Feit Uri Melamed Richard R. Schmidt and Heike Speer pg 1329; DOI: 10.1039/P19810001329 |
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Solvolytic rearrangements of azabicyclic compounds. Part 1. Identification of products John W. Bastable Anthony J. Cooper Ian R. Dunkin John D. Hobson and William D. Riddell pg 1339; DOI: 10.1039/P19810001339 |
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Solvolytic rearrangements of azabicyclic compounds. Part 2. Kinetics John W. Bastable Ian R. Dunkin and John D. Hobson pg 1346; DOI: 10.1039/P19810001346 |
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Microbial transformations of natural antitumour agents. Part 15. Metabolism of bruceantin by Streptomyces griseus Millie M. Chien and John P. Rosazza pg 1352; DOI: 10.1039/P19810001352 |
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Photochemical reactions of N-alkyl--oxoamides Hiromu Aoyama Masami Sakamoto and Yoshimori Omote pg 1357; DOI: 10.1039/P19810001357 |
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An improved stereospecific total synthesis of an aromatic c-ring testosterone analogue Subhash P. Khanapure Braja G. Hazra and K. G. Das pg 1360; DOI: 10.1039/P19810001360 |
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Reaction of phosphites with unsaturated acid chlorides: synthesis and reactions of dimethyl but-2-enoylphosphonate Anthony Szpala John C. Tebby and D. Vaughan Griffiths pg 1363; DOI: 10.1039/P19810001363 |
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Ketenimines as intermediates to heterocycles. Part 3. Rearrangement of 3-iminoisoxazolines to 2-imino-oxazolines Francesco De Sarlo Antonio Guarna Paolo Mascagni Robert Carrié and Pierre Guenot pg 1367; DOI: 10.1039/P19810001367 |
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Formation of 4-hydroxy-3-(-hydroxybenzyl)-4-phenyl-2-pyrazolin-5-one from the interaction of 3,6-bis-(-hydroxybenzyl)-s-tetrazine with potassium hydroxide in methanol Daniel Hunter and Douglas G. Neilson pg 1371; DOI: 10.1039/P19810001371 |
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Prostaglandin endoperoxide model compounds. Part 1. Synthesis of (n+ 5)-bromodioxabicyclo[n.2.1]alkanes A. J. Bloodworth and Henny J. Eggelte pg 1375; DOI: 10.1039/P19810001375 |
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Facile synthesis of basic skeletons of naturally occurring lactonic terpenes Tetsuji Kametani Toshio Honda Hiroo Matsumoto and Keiichiro Fukumoto pg 1383; DOI: 10.1039/P19810001383 |
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Stereoselective synthesis of the basic skeleton of aphidicolan-type diterpenes via intramolecular Diels–Alder cyclisation. Synthetic approach to aphidicoline Tetsuji Kametani Toshio Honda Yuichi Shiratori Hiroo Matsumoto and Keiichiro Fukumoto pg 1386; DOI: 10.1039/P19810001386 |
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A C-methylbiflavone from Cephalotaxus harringtonia K. Koch Mohammad Aqil Wasiur Rahman Noriko Hasaka Masayoshi Okigawa and Nobusuke Kawano pg 1389; DOI: 10.1039/P19810001389 |
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Graded hydrolysis studies on Pneumococcus Type IX capsular polysaccharide Jitendranath Pal Subhas B. Bhattacharya and Chintalacharuvu V. N. Rao pg 1393; DOI: 10.1039/P19810001393 |
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Studies on fungal metabolites. Part 2. Carbon-13 nuclear magnetic resonance biosynthetic studies on pentaketide metabolites of Aspergillus melleus: 3-(1,2-epoxypropyl)-5,6-dihydro-5-hydroxy-6-methylpyran-2-one and mellein John S. E. Holker and Thomas J. Simpson pg 1397; DOI: 10.1039/P19810001397 |
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Studies on heterocyclic chemistry. Part 24. Syntheses of the 4-arylisothiazol-3-yl O-thioesters utilising the S-thioester O-thioester rearrangements of the 4-aryl-5-thioxo-3-isothiazolin-3-yl S-thioesters induced by acylation reagents, peracid, or N-bromosuccinimide Tarozaemon Nishiwaki Etsuko Kawamura Noritaka Abe and Mistuo Iori pg 1401; DOI: 10.1039/P19810001401 |
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Organocuprate conjugate-addition–enolate-alkylation reactions: a new synthesis of 11-deoxyprostaglandins Andrew J. Dixon Richard J. K. Taylor and Roger F. Newton pg 1407; DOI: 10.1039/P19810001407 |
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Biosynthesis of chlorflavonin in Aspergillus candidus. 13C- and 14C-labelling evidence for a new route to the flavonoid structure Michael K. Burns Jane M. Coffin Itsuo Kurobane Leo C. Vining A. Gavin McInnes Donald G. Smith and John A. Walter pg 1411; DOI: 10.1039/P19810001411 |
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Partially fluorinated heterocyclic compounds. Part 13. The formation of some furan derivatives from polyfluoroaryl prop-2-ynyl ethers Gerald M. Brooke and Derek I. Wallis pg 1417; DOI: 10.1039/P19810001417 |
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The mechanism of the protodesilylation of allylsilanes and vinylsilanes Ian Fleming and Jennifer A. Langley pg 1421; DOI: 10.1039/P19810001421 |
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Triazines and related products, Part 22. Synthesis and reactions of imidazo[5,1-c][1,2,4]triazines Ghouse Unissa Baig and Malcolm F. G. Stevens pg 1424; DOI: 10.1039/P19810001424 |
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Triazines and related products. Part 23. New photo-products from 5-diazoimidazole-4-carboxamide (Diazo-IC) Julie K. Horton and Malcolm F. G. Stevens pg 1433; DOI: 10.1039/P19810001433 |
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Spirans. Part 14. Regioisomeric quinone methides and spirodimers related to tocopherol Francis M. Dean David A. Matkin and Mohamed O. A. Orabi pg 1437; DOI: 10.1039/P19810001437 |
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Fluorocarbon derivatives of nitrogen. Part 5. Replacement of imidoyl halogen by the bistrifluoromethylamino-oxy group: reactions of perfluoro-2-azapropene and related compounds with bis(bistrifluoro-methylamino-oxy)mercury(II) or NN-bistrifluoromethylhydroxylamine–caesium fluoride Ronald E. Banks and Dilip R. Choudhury pg 1443; DOI: 10.1039/P19810001443 |
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Synthesis of calythrone and related cyclopentene-1,3-diones via rearrangement of 4-ylidenebutenolides Nicholas G. Clemo David R. Gedge and Gerald Pattenden pg 1448; DOI: 10.1039/P19810001448 |
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Dienone–phenol rearrangements of bicyclic cyclohexa-2,5-dienones; confirmation of a multistage mechanism Anthony J. Waring Javid Hussain Zaidi and James W. Pilkington pg 1454; DOI: 10.1039/P19810001454 |
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Chiroptical studies. Part 101. An empirical analysis of circular dichroism data for steroidal and related transoid-unsaturated ketones Raymond D. Burnett and David N. Kirk pg 1460; DOI: 10.1039/P19810001460 |
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Studies in terpenoid biosynthesis, Part 24. The formation of the carbon skeleton of the sesquiterpenoid, dihydrobotrydial A. Peter W. Bradshaw James R. Hanson and Robert Nyfeler pg 1469; DOI: 10.1039/P19810001469 |
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Oxidation of phenols, pyrocatechols, and hydroquinones to ortho-quinones using benzeneseleninic anhydride Derek H. R. Barton Andrew G. Brewster Steven V. Ley Christine M. Read and Moshe N. Rosenfeld pg 1473; DOI: 10.1039/P19810001473 |
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Racemization of phenanthrene 3,4-oxide. Absolute stereochemistry of cis- and trans-phenanthrene 3,4-dihydrodiols Derek R. Boyd Ruth M. E. Greene John D. Neill Michael E. Stubbs Haruhiko Yagi and Donald M. Jerina pg 1477; DOI: 10.1039/P19810001477 |
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A carbon-13 nuclear magnetic resonance study of ristocetins A and B and their derivatives Michael P. Williamson and Dudley H. Williams pg 1483; DOI: 10.1039/P19810001483 |
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A two-stage conversion of primary-alkyl primary-amines into alcohols and further examples of transfunctionalisation of amines under mild conditions Alan R. Katritzky Antonio Saba and Ranjan C. Patel pg 1492; DOI: 10.1039/P19810001492 |
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Reactions of pyryliums with mono- and asym-di-substituted hydrazines Alan R. Katritzky Paloma Ballesteros and Alberto Tarraga Tomas pg 1495; DOI: 10.1039/P19810001495 |
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Dissolving metal reduction of esters to alkanes. A method for the deoxygenation of alcohols Anthony G. M. Barrett Christopher R. A. Godfrey David M. Hollinshead Panayiotis A. Prokopiou Derek H. R. Barton Robin B. Boar Laurette Joukhadar James F. McGhie and Satish C. Misra pg 1501; DOI: 10.1039/P19810001501 |
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The deoxygenation of NN-dialkylaminothiocarbonyloxyalkanes Anthony G. M. Barrett Panayiotis A. Prokopiou and Derek H. R. Barton pg 1510; DOI: 10.1039/P19810001510 |
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Synthesis of substituted cis-decalins as potential insect antifeedants William P. Jackson and Steven V. Ley pg 1516; DOI: 10.1039/P19810001516 |
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A versatile new synthesis of quinolines and related fused pyridines, Part 5. The synthesis of 2-chloroquinoline-3-carbaldehydes Otto Meth-Cohn Bramha Narine and Brian Tarnowski pg 1520; DOI: 10.1039/P19810001520 |
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A versatile new synthesis of quinolines and related fused pyridines. Part 7. The conversion of acetamidothiophens into thienopyridines Otto Meth-Cohn Brahma Narine and Brian Tarnowski pg 1531; DOI: 10.1039/P19810001531 |
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A versatile new synthesis of quinolines and related fused pyridines. Part 8. Conversion of anilides into 3-substituted quinolines and into quinoxalines Otto Meth-Cohn Salah Rhouati Brian Tarnowski and Andrew Robinson pg 1537; DOI: 10.1039/P19810001537 |
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Reactivity of triplet diphenylcarbene towards the sulphur atom of 1,2,3-benzothiadiazole Luisa Benati Pier Carlo Montevecchi Piero Spagnolo and Antonio Tundo pg 1544; DOI: 10.1039/P19810001544 |
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Synthetic studies with 7-functionalised norbornenes, and their synthesis by a silicon-controlled carbocation rearrangement Ian Fleming and Joseph P. Michael pg 1549; DOI: 10.1039/P19810001549 |
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Synthetic studies on terpene compounds. Part 13. Total synthesis of fraxinellone Takashi Tokoroyama Yoshiyasu Fukuyama Takashi Kubota and Kenji Yokotani pg 1557; DOI: 10.1039/P19810001557 |
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Studies on the syntheses of heterocyclic compounds. Part 878. Synthesis of ()-camptothecin and ()-10-methoxycamptothecin via enamine annulation Tetsuji Kametani Tatsushi Ohsawa and Masataka Ihara pg 1563; DOI: 10.1039/P19810001563 |
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Sodium borohydride reduction of adducts of primary amines with aldehydes and p-thiocresol. The alkylation of heterocyclic and aromatic amino-compounds Öznur Kemal and Colin B. Reese pg 1569; DOI: 10.1039/P19810001569 |
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Electron-transfer processes: oxidation of arylacetic acids by peroxydisulphate in acetic acid Claudio Giordano Aldo Belli Attilio Citterio and Francesco Minisci pg 1574; DOI: 10.1039/P19810001574 |
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Reaction of epoxides with triphenylphosphine–thiocyanogen (TPPT): preparation of -thiocyanatovinyl ketones, vic-dithiocyanates, and vic-dithiocyanatohydrins Yasumitsu Tamura Tomomi Kawasaki Hitoshi Yasuda Noriko Gohda and Yasuyuki Kita pg 1577; DOI: 10.1039/P19810001577 |
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The synthesis and Diels–Alder reactions of 2-prop-2-enylidene-1,3-dioxolan Steven V. Ley William L. Mitchell Tarur V. Radhakrishnan and Derek H. R. Barton pg 1582; DOI: 10.1039/P19810001582 |
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Synthetic applications of N–N linked heterocycles. Part 12. The preparation of 4-alkylthio- and 4-arylthio-pyridines by regiospecific attack of thioalkoxide lons on N-(4-oxopyridin-1-yl)pyridinium salts Michael P. Sammes Christopher W. F. Leung Chi Keung Mak and Alan R. Katritzky pg 1585; DOI: 10.1039/P19810001585 |
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Studies on mesoionic compounds. Part 11. Alkylation of 5-acylamino-1,2,3-thiadiazoles Katsutada Masuda Jun Adachi Hiroyuki Nate Hidenobu Takahata and Keiichi Nomura pg 1591; DOI: 10.1039/P19810001591 |
Studies of heterocyclic compounds. Part 27. Routes to 1,6-dioxa-6a 4-thia-2-azapentalenes, 1,6-dioxa-6a4-selena-2-azapentalenes, and 1-oxa-6a4-thia-2,5,6-triazapentalenesDavid H. Reid Robert Walker and Robert G. Webster pg 1596; DOI: 10.1039/P19810001596 |
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Synthetic studies on terpenoids. Part 21. Synthesis of a few perhydro-phenanthrene derivatives related to cheilanthatriol and its degradation products Ramanathapuram V. Venkateswaran Debabrata Mukherjee and Phanindra Chandra Dutta pg 1603; DOI: 10.1039/P19810001603 |
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Photoinitiated substitution reactions of heterocyclic bases: reaction with alkenes Rosanna Bernardi Tullio Caronna Sergio Morrocchi Piero Traldi and Bruno M. Vittimberga pg 1607; DOI: 10.1039/P19810001607 |
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Acid-catalysed rearrangements. Specific syntheses of 2,3-disubstituted indoles and N-hydroxyindoles Corrado Berti Lucedio Greci and Marino Poloni pg 1610; DOI: 10.1039/P19810001610 |
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Organoiron complexes in organic synthesis. Part 13. Synthesis of 6,6-disubstituted tricarbonyl(cyclohexadienylium)iron salts, and their conversion into 4,4-disubstituted cyclohexa-2,5-dienones Anthony J. Pearson and Chi Wi Ong pg 1614; DOI: 10.1039/P19810001614 |
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Controlled reduction of pyrimidin(e)-2(1H)-ones and -thiones with metal hydride complexes. Regioselective preparation of dihydro- and tetrahydro-pyrimidin-2(1H)-ones and the corresponding thiones Choji Kashima Akira Katoh Yuko Yokota and Yoshimori Omote pg 1622; DOI: 10.1039/P19810001622 |
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Blood-group li-active oligosaccharides. Synthesis of a tetrasaccharide, a -(1 3) dimer of N-acetyl-lactosamine Alain Veyrières pg 1626; DOI: 10.1039/P19810001626 |
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Synthesis and absolute configuration of chiral (C3) cyclotriveratrylene derivatives. Crystal structure of (M)-(–)-2,7,12-triethoxy-3,8,13-tris-[(R)-1-methoxycarbonylethoxy]-10,15-dihydro-5H-tribenzo[a,d,g]-cyclononene André Collet Jacqueline Gabard Jean Jacques Michèle Cesario Jean Guilhem and Claudine Pascard pg 1630; DOI: 10.1039/P19810001630 |
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Studies on the diastereoisomeric and conformational aspects of benzoyl dipeptide esters, as a means of assessing racemisation using nuclear magnetic resonance spectroscopy John S. Davies and R. John Thomas pg 1639; DOI: 10.1039/P19810001639 |
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-Cyclodextrin–nicotinamide as a model for NADH dependent enzymes Masayoshi Kojima Fujio Toda and Kenjiro Hattori pg 1647; DOI: 10.1039/P19810001647 |
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Benzylic substitution of benzyl methyl ether Ming Kuo Yeh pg 1652; DOI: 10.1039/P19810001652 |
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Nitrogen heterocycles. Part 10. Rearrangement of N-methylisoindolo[1,2-b][3]benzazepinium to N-methyldibenzo[a,g]quinolizinium (N-methylberbinium) ions, and a convenient new route to some alkaloid analogues of the isoquinoline series Pier Luigi Barili Rita Fiaschi Elio Napolitano Luisa Pistelli Valerio Scartoni and Antonio Marsili pg 1654; DOI: 10.1039/P19810001654 |
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Partially fluorinated heterocyclic compounds. Part 14. Syntheses of 4,5,6,7-tetrafluoro-2,3-dihydro-2-methyl-1-benzothiophen and 5,6,7,8-tetrafluorothiochroman from pentafluorophenyl prop-2-enyl sulphide via the Claisen rearrangement intermediate and the related reaction of prop-2-enyl 2,3,5,6-tetrafluorophenyl sulphide. Reactions which appear to proceed via homolytic fission of an aliphatic carbon–fluorine bond Gerald M. Brooke and Derek I. Wallis pg 1659; DOI: 10.1039/P19810001659 |
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Synthesis of some 5-halogenovinyl derivatives of uracil and their conversion into 2-deoxyribonucleosides Philip J. Barr A. Stanley Jones Gabriel Verhelst and Richard T. Walker pg 1665; DOI: 10.1039/P19810001665 |
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13C nuclear magnetic resonance spectra of methoxycyclohexane derivatives. Rotamer populations about C–OMe bonds as indicated by 13C chemical shifts of methoxy- and ring-carbons and 3JC,H coupling constants Alan H. Haines and Mohammad Seyedi Shandiz pg 1671; DOI: 10.1039/P19810001671 |
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Structure and synthesis of a new bromoindole from a marine sponge Gregory Dellar Peter Djura and Melvyn V. Sargent pg 1679; DOI: 10.1039/P19810001679 |
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Synthesis of aryltetralin and dibenzylbutyrolactone lignans: ()-lintetralin, ()-phyltetralin, and ()-kusunokinin Pralhad A. Ganeshpure and Robert Stevenson pg 1681; DOI: 10.1039/P19810001681 |
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The total synthesis of some deuterium labelled pentaketide derivatives of orsellinic acid Jill Barber and James Staunton pg 1685; DOI: 10.1039/P19810001685 |
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Nucleophilic substitution on perchloroindane; reactions and structural reassignments Manuel Ballester Juan Riera Luís Juliá Juan Castañer and Francisco Ros pg 1690; DOI: 10.1039/P19810001690 |
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Synthesis of linear 3-phenylpyranocoumarins: synthesis of robustin, robustic acid, and their methyl ethers Vinod K. Ahluwalia Chandra Prakash and Ravinder S. Jolly pg 1697; DOI: 10.1039/P19810001697 |
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Thermal behaviour of 3-phenyl-1,2,4-oxadiazol-5-ylhydrazines Giorgio Adembri Alfredo Camparini Fabio Ponticelli and Piero Tedeschi pg 1703; DOI: 10.1039/P19810001703 |
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Ring contraction of some 1-benzothiepin derivatives to 1-benzothiophens Amareshwar Chatterjee Bhaskar Sen and Swapan K. Chatterjee pg 1707; DOI: 10.1039/P19810001707 |
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Iminyls. Part 8. Intramolecular addition to nitrile groups Alexander R. Forrester Hajima Irikawa Ronald H. Thomson Soo On Woo and Trevor J. King pg 1712; DOI: 10.1039/P19810001712 |
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Iminyls. Part 9. Intramolecular addition of an iminyl to an alkene Shiravante Atmaram Alexander R. Forrester Melvin Gill and Ronald H. Thomson pg 1721; DOI: 10.1039/P19810001721 |
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Synthesis of prostaglandin A2 through reaction of 3-endo-bromotricyclo[3.2.0.0]heptan-6-one with a cuprate reagent Mark A. W. Finch Stanley M. Roberts Geoffrey T. Woolley and Roger F. Newton pg 1725; DOI: 10.1039/P19810001725 |
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Factors influencing the regioselectivity of reactions involving organocuprate reagents and allyl acylates: synthesis of some phenylthioprostanoids Stanley M. Roberts Geoffrey T. Wooley and Roger F. Newton pg 1729; DOI: 10.1039/P19810001729 |
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The preparation of synthetic analogues of strigol Alan W. Johnson Gopala Gowada Ahmed Hassanali John Knox Sam Monaco Zia Razavi and Gerald Rosebery pg 1734; DOI: 10.1039/P19810001734 |
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Reactions of carbonyl compounds with tervalent phosphorus reagents. Part 12. Aromatic aldehydes with bromophosphines and phosphorus tri-iodide Jacqui K. Michie J. Allen Miller M. John Nunn and Denis Stewart pg 1744; DOI: 10.1039/P19810001744 |
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Tetranortriterpenoids and related compounds. Part 26. Tecleanin, a possible precursor of limonin, and other new tetranortriterpenoids from Teclea grandifolia Engl. (Rutaceae) J. Foyere Ayafor B. Lucas Sondengam Joseph D. Connolly David S. Rycroft and Joseph I. Okogun pg 1750; DOI: 10.1039/P19810001750 |
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Bridged-ring nitrogen compounds. Part 5. Synthesis of 2,6-methano-3-benzazonine ring-systems George R. Proctor and Francis J. Smith pg 1754; DOI: 10.1039/P19810001754 |
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Hydrogen–deuterium exchange in thiazoles via phase-transfer catalysis William J. Spillane Patrick Kavanagh Frances Young Henri J.-M. Dou and Jacques Metzger pg 1763; DOI: 10.1039/P19810001763 |
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Conversion of D-lysine into L-lysine viaL-pipecolic acid in Nicotiana glauca L. plants and cell-suspension cultures Norbert Fangmeier and Eckhard Leistner pg 1769; DOI: 10.1039/P19810001769 |
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Cardenolide analogues. Part 12. 13C N.m.r. of semi-synthetic glycosides and side-chain modified genins H. T. Andrew Cheung Lindsay Brown John Boutagy and Richard Thomas pg 1773; DOI: 10.1039/P19810001773 |
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Carbon- 13 n.m.r. spectra of cardenolide glycosides. Configuration of the 11,12-epoxide in cerbertin Lindsay Brown H. T. Andrew Cheung R. Thomas Thomas R. Watson and Jacques L. E. Nemorin pg 1779; DOI: 10.1039/P19810001779 |
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Studies related to cyclopentanoid natural products. Part 1. Preparation of (4RS)- and (4R)-4-hydroxy-2-hydroxymethylcyclopent-2-en-1-one; a versatile synthetic intermediate John D. Elliott Michael Hetmanski Richard J. Stoodley and Malcolm N. Palfreyman pg 1782; DOI: 10.1039/P19810001782 |
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Structures of some new sesquiterpenoid metabolites of Marasmius alliaceus Iain W. Farrell Thomas G. Halsall Viktor Thaller A. Peter W. Bradshaw and James R. Hanson pg 1790; DOI: 10.1039/P19810001790 |
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Absolute stereochemistry of the sesquiterpenoid, alliacolide A. Peter W. Bradshaw James R. Hanson David N. Kirk and P. Molly Scopes pg 1794; DOI: 10.1039/P19810001794 |
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A mild procedure for the regiospecific benzylation and allylation of polyhydroxy-compounds via their stannylene derivatives in non-polar solvents Serge David Annie Thieffry and Alain Veyrières pg 1796; DOI: 10.1039/P19810001796 |
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Formation and thermal cleavage reactions of the cycloadduct of 9,10-dimethylanthracene and nitrosyl cyanide Peter Horsewood Gordon W. Kirby Ram Prakash Sharma and James G. Sweeny pg 1802; DOI: 10.1039/P19810001802 |
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Opening of cyclic acetals by trichloro-, dichloro-, and tribromo-borane Trevor G. Bonner David Lewis and Keith Rutter pg 1807; DOI: 10.1039/P19810001807 |
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Photosensitized oxidation of furans. Part 2. Comparison between triplet and singlet molecular oxygen oxidation of methyl 2-methyl-5-phenylfuran-3-carboxylate M. Liliana Graziano and Rachele Scarpati pg 1811; DOI: 10.1039/P19810001811 |
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Reaction of 1,3,5-trifluorotrinitrobenze with nucleophiles William M. Koppes G. William Lawrence Michael E. Sitzmann and Horst G. Adolph pg 1815; DOI: 10.1039/P19810001815 |
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Heteropentalenes. On 5H-pyrazolo[1,2:1,2]-1,2,3-triazolo[5,4-a]-phenazinyliumide Angelo Albini Gian Franco Bettinetti and Giovanna Minoli pg 1821; DOI: 10.1039/P19810001821 |
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Preparation of stable -sultines. Crystal structure of 2,2-bis-(p-fluorophenyl)-3,3-dimethyl-1,2-oxathietan 2-oxide Michael D. M. Gray David R. Russell David J. H. Smith Tony Durst and Boris Gimbarzevsky pg 1826; DOI: 10.1039/P19810001826 |
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Two new xanthones, calozeyloxanthone and zeyloxanthonone, from Calophyllum zeylanicum(Guttiferae) Sarath P. Gunasekera Subramaniam Sotheeswaran and M. Uvais S. Sultanbawa pg 1831; DOI: 10.1039/P19810001831 |
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Dehydrogenation of alcohols by pyrimido[4,5-b]quinoline-2(3H),4(10H)-diones (5-deazaflavins) as autorecycling oxidizing agents Fumio Yoneda Kenya Mori Sawako Matsuo Yoko Kadokawa and Yoshiharu Sakuma pg 1836; DOI: 10.1039/P19810001836 |
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Experiments on the synthesis of tetracycline. Part 16. Improved photocyclic preparation of 12-keto-derivatives and their deprotection using benzeneseleninic anhydride Derek H. R. Barton Maria T. Bielska José M. Cardoso Nigel J. Cussans and Steven V. Ley pg 1840; DOI: 10.1039/P19810001840 |
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Photolysis and flash thermolysis of some 1,3-dihydrobenzo[c]thiophen 2,2-dioxides Tony Durst Michael Lancaster and David J. H. Smith pg 1846; DOI: 10.1039/P19810001846 |
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Acid-catalysed intramolecular cyclization of geranyl hydroquinone derivatives from Cordia alliodora. X-Ray crystal and molecular structure of 1,2,3,3a,4,9,10,10a-octahydro-5,8-dimethoxy-3,10-dimethyl-3a,9-epoxybenz[f]azulene Gary D. Manners and Rosalind Y. Wong pg 1849; DOI: 10.1039/P19810001849 |
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Starfish saponins. Part 5. Structure of sepositoside A, a novel steroidal cyclic glycoside from the starfish Echinaster sepositus Francesco De Simone Antonio Dini Estea Finamore Luigi Minale Cosimo Pizza Raffaele Riccio and Franco Zollo pg 1855; DOI: 10.1039/P19810001855 |
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Mercuriation and thalliation of polystyrene: conversion of the products into polystyrenes containing lodobenzene, phenylboronic acid, and phenol residues Nicholas P. Bullen Philip Hodge and F. Gordon Thorpe pg 1863; DOI: 10.1039/P19810001863 |
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Reaction of tropone with 2-mercaptoethanol: 1,2-difunctionalization of cycloheptatrienes with oxygen and sulphur in a fused ring Marino Cavazza Gioia Morganti Antonio Guerriero and Francesco Pietra pg 1868; DOI: 10.1039/P19810001868 |
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Photoinduced reactions. Part 116. The reaction of epoxides with oxygen-transfer reagents Yoshikatsu Ito and Teruo Matsuura pg 1871; DOI: 10.1039/P19810001871 |
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A synthesis of adenosine 5-[-18O2]triphosphate Gordon Lowe and Brian S. Sproat pg 1874; DOI: 10.1039/P19810001874 |
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Metabolites from the purple heartwood of mimosoideae. Part 3. Acacia crombei C. T. White: structure and partial synthesis of crombenin, a natural spiropeltogynoid Edward V. Brandt Daneel Ferreira and David G. Roux pg 1879; DOI: 10.1039/P19810001879 |
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A carbon–carbon bond formation reaction at the C-4 position of a -lactam Tetsuji Kametani Toshio Honda Junko Sasaki Hirofumi Terasawa and Keiichiro Fukumoto pg 1884; DOI: 10.1039/P19810001884 |
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N-methylated products of the Solanum steroidal alkaloids tomatidine and solasodine Hugo E. Gottlieb Igor Belic Radovan Komel and Miljenko Mervic pg 1888; DOI: 10.1039/P19810001888 |
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An unambiguous synthesis of pyrazoles by sulphur extrusion from 1,2,6-thiadiazines José Barluenga J. Francisco López-Ortiz Miguel Tomás and Vicente Gotor pg 1891; DOI: 10.1039/P19810001891 |
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Pyrimidine derivatives and related compounds. Part 36. Nucleophilic addition reaction of a cyanide lon to 6-substituted 1,3-dimethyl-5-nitrouracils. Synthesis of 5,6-dihydrouracil and 5,6-dihydrocyclo-thymine derivatives Kosaku Hirota Yoshihiro Yamada Tetsuji Asao and Shigeo Senda pg 1896; DOI: 10.1039/P19810001896 |
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Metal catalysis in organic reactions. Part 13. The reaction of 3-en-1-ynes with trialkylalanes: influence of transition-metal complexes Anna Maria Caporusso Giampaolo Giacomelli and Luciano Lardicci pg 1900; DOI: 10.1039/P19810001900 |
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Synthesis of ()-actinidine by an intramolecular cycloaddition process Lyn B. Davies Sydney G. Greenberg and Peter G. Sammes pg 1909; DOI: 10.1039/P19810001909 |
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Synthesis of human growth hormone-(27–44)-octadecapeptide and some smaller fragment peptides Francesco Chillemi pg 1913; DOI: 10.1039/P19810001913 |
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The microbiological production of analogues of mould metabolites. Part 2. Production of 9-fluorogibberellin A4, 9-fluorogibberellin A14, and other fluoroterpenoids by Gibberella fujikuroi Brian E. Cross and Anton Erasmuson pg 1918; DOI: 10.1039/P19810001918 |
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Three new saponins from the leaves of Hovenia dulcis(Rhamnaceae) Yasuko Kimura Yoshimasa Kobayashi Tadahiro Takeda and Yukio Ogihara pg 1923; DOI: 10.1039/P19810001923 |
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Saponins from roots of Platycodon grandiflorum. Part 1. Structure of prosapogenins Hiroshi Ishii Kazuo Tori Takehiko Tozyo and Yohko Yoshimura pg 1928; DOI: 10.1039/P19810001928 |
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Some epoxide ring-opening reactions of -epoxysilanes Anthony P. Davis Gwyneth J. Hughes Peter R. Lowndes Catherine M. Robbins Elizabeth J. Thomas and Gordon H. Whitham pg 1934; DOI: 10.1039/P19810001934 |
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Long-chain phenols. Part 18. Conversion of anacardic acid into urushiol Lam Soot Kiong and John H. P. Tyman pg 1942; DOI: 10.1039/P19810001942 |
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Base catalysed rearrangements involving ylide intermediates. Part 9. The rearrangement reactions of cyclic allylic ammonium and sulphonium ylides Sivapathasuntharam Mageswaran W. David Ollis and Ian O. Sutherland pg 1953; DOI: 10.1039/P19810001953 |
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Base catalysed rearrangements involving ylide intermediates. Part 10. The effects of torsional strain in the transition state upon [1,2] and [3,2] rearrangements W. David Ollis Ian O. Sutherland and Yodhathai Thebtaranonth pg 1963; DOI: 10.1039/P19810001963 |
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Base catalysed rearrangements involving ylide intermediates. Part 11. Rearrangements of 3-phenylprop-2-ynylammonium ylides Sivapathasuntharam Mageswaran W. David Ollis Dolores A. Southam Ian O. Sutherland and Yodhathai Thebtaranonth pg 1969; DOI: 10.1039/P19810001969 |
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Base catalysed rearrangements involving ylide intermediates. Part 12. The preparation and reactions of 2-oxidoanilinium ylides W. David Ollis Ian O. Sutherland and Yodhathai Thebtaranonth pg 1981; DOI: 10.1039/P19810001981 |
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Synthetic study of pinguisane terpenoids Silvana Bernasconi Marinella Ferrari Pierluigi Gariboldi Giancarlo Jommi Massimo Sisti and Riccardo Destro pg 1994; DOI: 10.1039/P19810001994 |
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Synthesis along biosynthetic pathways. Part 2. Synthesis of protostephanine Alan R. Battersby Akil K. Bhatnagar Peter Hackett Craig W. Thornber and James Staunton pg 2002; DOI: 10.1039/P19810002002 |
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Biosynthesis. Part 23. Degradative studies on the alkaloids hasubanonine and protostephanine from Stephania japonica Alan R. Battersby Raymond C. F. Jones Rymantas Kazlauskas Anthony P. Ottridge Christiane Poupat and James Staunton pg 2010; DOI: 10.1039/P19810002010 |
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Biosynthesis. Part 24. Speculative incorporation experiments with 1-benzylisoquinolines and a logical approach via C6–C2 and C6–C3 precursors to the biosynthesis of hasubanonine and protostephanine Alan R. Battersby Raymond C. F. Jones Rymantas Kazlauskas Craig W. Thornber Somsak Ruchirawat and James Staunton pg 2016; DOI: 10.1039/P19810002016 |
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Biosynthesis. Part 25. Proof that hasubanonine and protostephanine are biosynthesised from the 1-benzylisoquinoline system Alan R. Battersby Raymond C. F. Jones Akwasi Minta Anthony P. Ottridge and James Staunton pg 2030; DOI: 10.1039/P19810002030 |
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Tritiated peptides. Part 11. Synthesis of [4-3H-Phe6]-, [4-3H-Phe11]-, and [4-3H-Phe6,11]-somatostatin and the metabolite [des-Ala1]-somatostatin Mark C. Allen Derek E. Brundish John R. Martin and Roy Wade pg 2040; DOI: 10.1039/P19810002040 |
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Total synthesis of ()-prostaglandin E2 methyl ester from exo-2-bromo-endo-3-hydroxybicyclo[3.2.0]heptan-6-one using dimethyl-t-butylsilyl protected intermediates Colin Howard Roger F. Newton Derek P. Reynolds and Stanley M. Roberts pg 2049; DOI: 10.1039/P19810002049 |
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A short and efficient total synthesis of () prostaglandin D2 methyl ester involving a new method for the cleavage of a dimethyl-t-butylsilyl ether Roger F. Newton Derek P. Reynolds Colin F. Webb and Stanley M. Roberts pg 2055; DOI: 10.1039/P19810002055 |
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Polyhalogenoaromatic compounds. Part 34. Syntheses of perfluoroaza- and -diaza-cyclohexadiene derivatives by fluorination of perfluoroazines and -diazines Robert N. Barnes Richard D. Chambers Robert D. Hercliffe and W. Kenneth R. Musgrave pg 2059; DOI: 10.1039/P19810002059 |
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Syntheses of monofunctional porphyrinyl peptides containing glycine and leucine Kevin M. Smith Lionel R. Milgrom and George W. Kenner pg 2065; DOI: 10.1039/P19810002065 |
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Synthesis of a tri-, a penta-, and a hepta-saccharide containing terminal N-acetyl--D-lactosaminyl residues, part of the complex-type carbohydrate moiety of glycoproteins Jan Arnarp and Jörgen Lönngren pg 2070; DOI: 10.1039/P19810002070 |
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Studies on the rearrangement of 8,9-epoxy-12,12-ethylenedioxypodocarpan-16-ol acetate by boron trifluoride–ether. Formation of a novel product containing a C-seco, B-aromatic system Tatsuhiko Nakano Alberto Haces Alfonso Martín and Anibal Rojas pg 2075; DOI: 10.1039/P19810002075 |
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Cyclopropene chemistry. Part 1. Preparation and some reactions of 3,3-dichloro-1,2-bistrifluoromethyl- and 1,3-dichloro-2,3-bistrifluoromethyl-cyclopropene J. Michael Birchall Klaus Burger Robert N. Haszeldine and Shmaiel N. Nona pg 2080; DOI: 10.1039/P19810002080 |
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Studies related to -lactam antibiotics. Part 7. Facile formation of oxazolinoazetidinones from benzothiazolyldithioazetidinones and related reactions Yoshifumi Maki Naomichi Mitsumori Magoichi Sako and Mikio Suzuki pg 2087; DOI: 10.1039/P19810002087 |
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The syntheses of ()-juglomycin A and ()-juglomycin B, racemates of two isomeric naturally occurring naphthoquinonoid antibiotics Robin G. F. Giles Peter R. K. Mitchell Gregory H. P. Roos and Jacobus M. M. Strümpfer pg 2091; DOI: 10.1039/P19810002091 |
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Heterocyclic prostaglandin analogues. Part 4. Piperazine-2,5-diones, pyrazolidine-3,5-diones, 1,2,4-triazolidinediones, 1,3,4-oxadiazolidinediones and 1,3,4-thiadiazolidinediones Paul Barraclough A. Gordon Caldwell C. John Harris and Norman Whittaker pg 2096; DOI: 10.1039/P19810002096 |
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Synthesis of alkenyl sulphoxides by intramolecular and intermolecular addition of sulphenic acids to alkynes Richard Bell Peter D. Cottam John Davies and D. Neville Jones pg 2106; DOI: 10.1039/P19810002106 |
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Oxyallyls in synthesis. Preparation of analogues of muscarine and -multistriatin Antony P. Cowling John Mann and Attique A. Usmani pg 2116; DOI: 10.1039/P19810002116 |
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A new route to anthraquinones David J. Dodsworth María-Pía Calcagno E. Ursula Ehrmann Bhatt Devadas and Peter G. Sammes pg 2120; DOI: 10.1039/P19810002120 |
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Synthesis of lichesterol [ergosta-5,8(9),22-trien-3-ol] Mario Anastasia and Alberto Fiecchi pg 2125; DOI: 10.1039/P19810002125 |
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Some rearrangements of unsaturated phosphonate esters Dianne Cooper and Stuart Trippett pg 2127; DOI: 10.1039/P19810002127 |
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Lignans and related phenols. Part 16. The biogenesis of podophyllotoxin David C. Ayres Alexandra Farrow and Brian G. Carpenter pg 2134; DOI: 10.1039/P19810002134 |
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Semisynthetic aminoglycoside antibacterials. Part 7. Synthesis of novel hexopyranosyl and hexofuranosyl derivatives of gentamine C1 and C1a Peter J. L. Daniels Charles E. Luce Alan K. Mallams James B. Morton Surinderjit S. Saluja Hsingan Tsai Jay Weinstein John J. Wright George Detre Masato Tanabe and Dennis M. Yasuda pg 2137; DOI: 10.1039/P19810002137 |
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Semisynthetic aminoglycoside antibacterials. Part 8. Synthesis of novel pentopyranosyl and pentofuranosyl derivatives of gentamine C1 and C1a D. Huw Davies Max Kugelman Paul Lee Charles E. Luce Alan K. Mallams James B. Morton Surinderjit S. Saluja John J. Wright George Detre Masato Tanabe and Dennis M. Yasuda pg 2151; DOI: 10.1039/P19810002151 |
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Semisynthetic aminoglycoside antibacterials. Part 9. Synthesis of novel 1- and 3-substituted and 1- and 3-epi-substituted derivatives of sisomicin and gentamicin from the 1- and 3-oxo-derivatives Dena L. Boxler Raymond Brambilla D. Huw Davies Alan K. Mallams Stuart W. McCombie James B. Morton Paul Reichert and H. Frederick Vernay pg 2168; DOI: 10.1039/P19810002168 |
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Semisynthetic aminoglycoside antibacterials. Part 10. Synthesis of novel 1-N-aminoalkoxycarbonyl and 1-N-aminoalkylcarboxamido derivatives of sisomicin, gentamicin B, gentamicin C1a, and kanamycin A Alan K. Mallams James B. Morton and Paul Reichert pg 2186; DOI: 10.1039/P19810002186 |
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Semisynthetic aminoglycoside antibacterials. Part 11. Solution conformations of semisynthetic and naturally occurring aminoglycoside antibiotics Peter J. L. Daniels Alan K. Mallams Stuart W. McCombie James B. Morton Tatanahalli L. Nagabhushan Dinanath F. Rane Paul Reichert and John J. Wright pg 2209; DOI: 10.1039/P19810002209 |
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A short and stereoselective synthesis of the carbapenem antibiotic PS-5 Tetsuji Kametani Toshio Honda Atsushi Nakayama Yuko Sasakai Tomoko Mochizuki and Keiichiro Fukumoto pg 2228; DOI: 10.1039/P19810002228 |
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The synthesis of chiral arene oxide metabolites of benz[a]anthracene: optically active benz[a]anthracene 10,11- and 5,6-oxides Derek R. Boyd Guru S. Gadaginamath Narain D. Sharma Alexander F. Drake Stephen F. Mason and Donald M. Jerina pg 2233; DOI: 10.1039/P19810002233 |
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Spirophosphoranes derived from 3H-2,1-benzoxaphospholes Britta M. Dahl Otto Dahl and Stuart Trippett pg 2239; DOI: 10.1039/P19810002239 |
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Intramolecular cyclisations of nitrile imines bearing a thioether function Luca Bruché Luisa Garanti and Gaetano Zecchi pg 2245; DOI: 10.1039/P19810002245 |
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Polycyclic analogues of trans-decalones. Part 4. Synthesis, optical resolution, and circular dichroism of trans-anti-trans-perhydrophenanthren-4-one Benito Alcaide and Franco Fernández pg 2250; DOI: 10.1039/P19810002250 |
Synthesis of  -(L--aminoadipoyl)-L-cysteinyl-D-valine and some carbon-13 and nitrogen-15 labelled isotopomersJack E. Baldwin Stephen R. Herchen Brian L. Johnson Mankil Jung John J. Usher and Terence Wan pg 2253; DOI: 10.1039/P19810002253 |
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C-nucleoside studies. Part 12. Synthesis of 3-- and 3--(D-xylofuranosyl)pyrazoles J. Grant Buchanan Simon J. Moorhouse and Richard H. Wightman pg 2258; DOI: 10.1039/P19810002258 |
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C-nucleoside studies. Part 13. A new synthesis of 2,3,5-tri-O-benzyl-(and )-D-ribofuranosylethyne involving benzyloxy participation, and a synthesis of -showdomycin Gaffar Aslani-Shotorbani J. Grant Buchanan Alan R. Edgar Colin T. Shanks and Gavin C. Williams pg 2267; DOI: 10.1039/P19810002267 |
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2-Alkyl-5-imino-1-benzopyrano[3,4-c]pyridin-4(3H,5H)-ones and related compounds from reaction of 3-carbamoyl-2-iminochromens with methyl ketones Conor N. O'Callaghan pg 2273; DOI: 10.1039/P19810002273 |
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Selective oxidation of oleanane triterpenoids Yoshimasa Kobayashi Muneharu Ogawa and Yukio Ogihara pg 2277; DOI: 10.1039/P19810002277 |
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Total synthesis of ()-epithienamycins A and B [()-olivanic acids MM22380 and MM22382] and derivatives Tetsuji Kametani Shyh-Pyng Huang Takayasu Nagahara and Masataka Ihara pg 2282; DOI: 10.1039/P19810002282 |
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Methyltriphenoxyphosphonium iodide (MTPI); induced dehydration and dehydrohalogenation in aprotic solvents Charles W. Spangler Douglas P. Kjell Lori L. Wellander and Mary A. Kinsella pg 2287; DOI: 10.1039/P19810002287 |
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A potent mutagen in broiled fish. Part 1. 2-Amino-3-methyl-3H-imidazo[4,5-f]quinoline Hiroshi Kasai Ziro Yamaizumi Susumu Nishimura Keiji Wakabayashi Minako Nagao Takashi Sugimura Neil E. Spingarn John H. Weisburger Shigeyuki Yokoyama and Tatsuo Miyazawa pg 2290; DOI: 10.1039/P19810002290 |
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Uridine oligonucleotide synthesis by the reaction of uridine with tri-(imidazol-1-yl)phosphine Takeo Shimidzu Kazushige Yamana Kikumi Nakamichi and Akira Murakami pg 2294; DOI: 10.1039/P19810002294 |
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An approach to the synthesis of cyclopentane analogues of the lyxosyl C-nucleosides Amirin bin Sadikun David I. Davies and Robert F. Kenyon pg 2299; DOI: 10.1039/P19810002299 |
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Alkylated steroids. Part 3. The 21-alkylation of 20-oxopregnanes and synthesis of a novel anti-inflammatory 16,17,21-trimethyl steroid (Org 6216) James Cairns Robert T. Logan George McGarry Robert G. Roy Donald F. M. Stevenson and Gilbert F. Woods pg 2306; DOI: 10.1039/P19810002306 |
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Synthesis of chiral [16O,17O,18O]phosphate esters Paul M. Cullis and Gordon Lowe pg 2317; DOI: 10.1039/P19810002317 |
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Cycloaddition reactions of sulphines and thiones with azoalkenes Bianca F. Bonini Gaetano Maccagnani Germana Mazzanti Goffredo Rosini and Elisabetta Foresti pg 2322; DOI: 10.1039/P19810002322 |
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Epoxidations with triphenylphosphine and diethyl azodicarboxylate. Part 1. Synthesis of methyl 3,4-anhydro-D-tagatofuranosides R. D. Guthrie Ian D. Jenkins Ryohei Yamasaki Brian W. Skelton and Allan H. White pg 2328; DOI: 10.1039/P19810002328 |
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An infrared study of rotational isomerism in thiazole-2-carboxylates Perry T. Kaye G. Denis Meakins Charles Willbe and Peter R. Williams pg 2335; DOI: 10.1039/P19810002335 |
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The structures of 4- and 5-substituted 4-thiazolin-2-ones Stephen P. Cornwell Perry T. Kaye Alexander G. Kent and G. Denis Meakins pg 2340; DOI: 10.1039/P19810002340 |
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v-Triazolo[4,5-d]pyrimidines (8-azapurines). Part 24. The 3-alkyl derivatives Adrien Albert pg 2344; DOI: 10.1039/P19810002344 |
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[3,2] Sigmatropic rearrangements of some allylic oxosulphonium ylides. A route to trienes and azatrienes, and their cyclic isomers Roy Faragher Thomas L. Gilchrist and Ian W. Southon pg 2352; DOI: 10.1039/P19810002352 |
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Novel 2-acylcyclohexane-1,3-diones in the mandibular glands of lepidopteran larvae. Kairomones of Ephestia kuehniella Zeller Alan Mudd pg 2357; DOI: 10.1039/P19810002357 |
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Radical-induced ring opening of epoxides. A convenient alternative to the wharton rearrangement Derek H. R. Barton Robyn S. Hay Motherwell and William B. Motherwell pg 2363; DOI: 10.1039/P19810002363 |
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Stereochemistry of alkaline hydrolyses of 1,3,2-oxazaphospholidine-2-thiones and related reactions C. Richard Hall and Thomas D. Inch pg 2368; DOI: 10.1039/P19810002368 |
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C-nucleoside studies. Part 14. A new synthesis of pyrazofurin J. Grant Buchanan Alan Stobie and Richard H. Wightman pg 2374; DOI: 10.1039/P19810002374 |
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Synthesis of streptococcal Groups A, C and variant-A antigenic determinants Tommy Iversen Staffan Josephson and David R. Bundle pg 2379; DOI: 10.1039/P19810002379 |
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Synthesis of certain fluorescent tricyclic nucleosides derived from pyrazolo[3,4-d]pyrimidine nucleosides Ganapati A. Bhat and Leroy B. Townsend pg 2387; DOI: 10.1039/P19810002387 |
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Total synthesis of pinguisone Silvana Bernasconi Pierluigi Gariboldi Giancarlo Jommi Stefania Montanari and Massimo Sisti pg 2394; DOI: 10.1039/P19810002394 |
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Michael addition to trans-enediones: a facile route to 2,3,4,5-tetra-substituted furans Roberto Antonioletti Maurizio D'Auria Giovanni Piancatelli and Arrigo Scettri pg 2398; DOI: 10.1039/P19810002398 |
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Synthesis of 11- and 11-diethylaminoethyl ethers of 17-ethynylestradiol Cecil M. DiNunno P. Narasimha Rao and Hyun K. Kim pg 2401; DOI: 10.1039/P19810002401 |
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Steroidal glycosides of Tribulus terrestris Linn Shashi B. Mahato Niranjan P. Sahu Amar N. Ganguly Kazumoto Miyahara and Toshio Kawasaki pg 2405; DOI: 10.1039/P19810002405 |
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Stereoselective synthesis of -sinensal via a -allylnickel(II) complex Kikumasa Sato Seiichi Inoue and Kiyoshi Watanabe pg 2411; DOI: 10.1039/P19810002411 |
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The Diels–Alder route to allylsilanes from 1-trimethylsilylbutadienes Martin J. Carter Ian Fleming and Alan Percival pg 2415; DOI: 10.1039/P19810002415 |
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Removal of toluene-p-sulphonyl groups from sulphonamides. Part 4. Synthesis of phenylglyoxal imine monomers William R. McKay and George R. Proctor pg 2435; DOI: 10.1039/P19810002435 |
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Removal of toluene-p-sulphonyl groups from sulphonamides. Part 5. Reactions of phenylglyoxal imines and some tosylimines William R. McKay and George R. Proctor pg 2443; DOI: 10.1039/P19810002443 |
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Action of toluene-p-thiol and triethylamine on fully protected thymidylyl-(3 5)-thymidine. Possible occurrence of thiolate ion-promoted internucleotide cleavage in the synthesis of oligonucleotides by the phosphotriester approach Colin B. Reese Richard C. Titmas and Lydia Valente pg 2451; DOI: 10.1039/P19810002451 |
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The Smiles rearrangement of 2-aryloxy-5-nitrophenoxides. Attempted routes to benzoxirens and tribenzo[b,e,h]trioxonins Christopher A. Ramsden pg 2456; DOI: 10.1039/P19810002456 |
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Structural studies of halogenated diphenyl ethers from a marine sponge Robert Capon Emilio L. Ghisalberti Philip R. Jefferies Brian W. Skelton and Allan H. White pg 2464; DOI: 10.1039/P19810002464 |
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Synthesis of -amino-acid peptides. Part 2. Preparation of peptides of 3-amino-2,2-dimethylpropionic acid by means of conventional coupling reagents and with oxazin-6-one derivatives Charles N. C. Drey and Richard J. Ridge pg 2468; DOI: 10.1039/P19810002468 |
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The chemistry of conjugated polyenoic acids in sulphuric acid: a homologous series of retinoic acid (vitamin A acid) Kiyoshi Tsukida Masayoshi Ito Fumiko Tomeoka and Akiko Kodama pg 2472; DOI: 10.1039/P19810002472 |
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Synthetic applications of N–N linked heterocycles. Part 14. The preparation of -(4-pyridyl)esters and -(4-pyridyl)nitriles by regiospecific attack of ester and nitrile anions on pyridinium salts Michael P. Sammes Cheuk Man Lee and Alan R. Katritzky pg 2476; DOI: 10.1039/P19810002476 |
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Metabolites from the purple heartwoods of the mimosoideae. Part 4. Acacia fasciculifera F. Muell ex. Benth: fasciculiferin, fasciculiferol, and the synthesis of 7-aryl- and 7-flavanyl-peltogynoids Fanie R. van Heerden Edward V. Brandt Daneel Ferreira and David G. Roux pg 2483; DOI: 10.1039/P19810002483 |
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8-Substituted flavonoids and 3-substituted 7-oxygenated chalcones from Tephrosia purpurea Andrew Pelter Robert S. Ward E. Venkata Rao and N. Ranga Raju pg 2491; DOI: 10.1039/P19810002491 |
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The reaction of imidazolidine-2-thione with carbon disulphide Masataka Yokoyama Kosei Motozawa Ei-ichi Kawamura and Tsuneo Imamoto pg 2499; DOI: 10.1039/P19810002499 |
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Structure and chemistry of -allyl palladium complexes from steroids Christian Mahé Henri Patin Marie-Thérèse Van Hulle and Derek H. R. Barton pg 2504; DOI: 10.1039/P19810002504 |
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A versatile new synthesis of quinolines and related fused pyridines. Part 9. Synthetic application of the 2-chloroquinoline-3-carbaldehydes Otto Meth-Cohn Bramha Narine Brian Tarnowski Roy Hayes Amitis Keyzad Salah Rhouati and Andrew Robinson pg 2509; DOI: 10.1039/P19810002509 |
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The mechanism of the protodesilylation of allylsilanes which are disubstituted on C-3 Ian Fleming Decio Marchi and Shailesh K. Patel pg 2518; DOI: 10.1039/P19810002518 |
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The conjugate addition of a silyl group to enones and its removal with copper(II) bromide: a protecting group for the -unsaturation of -unsaturated ketones David J. Ager Ian Fleming and Shailesh K. Patel pg 2520; DOI: 10.1039/P19810002520 |
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The silylcupration of acetylenes: a synthesis of vinylsilanes Ian Fleming Trevor W. Newton and Felix Roessler pg 2527; DOI: 10.1039/P19810002527 |
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The action of light on solid humulene nitrosite, C15H24N2O3. Characterization of reaction products, e.p.r. studies and reaction mechanisms Derek K. MacAlpine Andrew L. Porte and George A. Sim pg 2533; DOI: 10.1039/P19810002533 |
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Synthesis of novel fused -lactams by intramolecular 1,3-dipolar cycloadditions. Part 1. Tricyclic triazole David Davies and Michael J. Pearson pg 2539; DOI: 10.1039/P19810002539 |
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Synthesis of novel fused -lactams by intramolecular 1,3-dipolar cycloadditions. Part 2. (8S,8aR)-7,8-dihydro-7-oxo-8-phenoxyacetamido-8aH-azeto[1,2-a]-v-triazolo[3,4-c]pyrimidine-5-carboxylic acids Michael J. Pearson pg 2544; DOI: 10.1039/P19810002544 |
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Benzopyrones. Part 17. The synthesis of some bischromones and the reaction of cyanomethyl esters with sodium azide Peter S. Bevan Gwynn P. Ellis and H. Kerr Wilson pg 2552; DOI: 10.1039/P19810002552 |
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Benzopyrones. Part 18. Carbon-13 nuclear magnetic resonance spectroscopy of chromones Gwynn P. Ellis and J. Michael Williams pg 2557; DOI: 10.1039/P19810002557 |
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Synthesis of chondrillasterol and spinasterol [(22E,24R)- and (22E,24S)-5-stigmasta-7,22-dien-3-ol] Mario Anastasia Alberto Fiecchi Antonio Scala and Marina del Puppo pg 2561; DOI: 10.1039/P19810002561 |
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2R,3R-(+)-3-acetoxy-4,5-dihydroxy-7-methoxyflavanone and 2R,3R-(+)-3-acetoxy-4,5,7-trihydroxyflavanone: two new 3-acetylated dihydroflavonols from Aframomum pruinosum Gagnepain (Zingiberaceae) J. Foyere Ayafor and Joseph D. Connolly pg 2563; DOI: 10.1039/P19810002563 |
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An improved two-step route for the preparation of -diketones from aldehydes and its application to the synthesis of -damascone Roberto Pellicciari Renata Fringuelli Ettore Sisani and Massimo Curini pg 2566; DOI: 10.1039/P19810002566 |
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Biosynthesis of fungal metabolites. Terrein, a metabolite of Aspergillus terreus Thom Robert A. Hill Rachel H. Carter and James Staunton pg 2570; DOI: 10.1039/P19810002570 |
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The biosynthesis of citrinin by Penicillium citrinum Jill Barber Rachel H. Carter Mary J. Garson and James Staunton pg 2577; DOI: 10.1039/P19810002577 |
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The biosynthesis of fungal metabolites: sclerin, a plant growth hormone from Sclerotinia sclerotiorum Jill Barber Mary J. Garson and James Staunton pg 2584; DOI: 10.1039/P19810002584 |
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Biosynthesis of citrinin and synthesis of its biogenetic precursors Lino Colombo Cesare Gennari Donatella Potenza Carlo Scolastico Fabrizio Aragozzini and Cosetta Merendi pg 2594; DOI: 10.1039/P19810002594 |
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Absolute configuration and biosynthesis of tiliacorine and tiliacorinine Dewan S. Bhakuni and Sudha Jain pg 2598; DOI: 10.1039/P19810002598 |
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A direct synthesis of methanodibenzo[1,3]dioxocins Jaco C. Breytenbach Gerhardus J. H. Rall and David G. Roux pg 2604; DOI: 10.1039/P19810002604 |
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Thallium(I) carboxylate modification of the hunsdiecker reaction Richard C. Cambie Rodney C. Hayward Jeffrey L. Jurlina Peter S. Rutledge and Paul D. Woodgate pg 2608; DOI: 10.1039/P19810002608 |
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Intermolecular trapping of sulphenylnitrenes by alkenes Robert S. Atkinson and Brian D. Judkins pg 2615; DOI: 10.1039/P19810002615 |
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Novel -lactams derived from the photoisomer of N-benzyloxycarbonylmethylene-2-pyridone William J. Begley Gordon Lowe Anthony K. Cheetham and John M. Newsam pg 2620; DOI: 10.1039/P19810002620 |
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meso(Methine) functionalization of octa-alkylporphyrins Kevin M. Smith and Graham M. F. Bisset pg 2625; DOI: 10.1039/P19810002625 |
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Alkylated steroids. Part 4. An unusual Favorskii rearrangement Robert T. Logan Robert G. Roy and Gilbert F. Woods pg 2631; DOI: 10.1039/P19810002631 |
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Reaction of 9--chloronaphthylmethylanthracene and its homologues with nucleophiles under solvolytic conditions. Effect of the increase of bulk at C- on the reaction site Masato Takagi Masatomo Nojima and Shigekazu Kusabayashi pg 2637; DOI: 10.1039/P19810002637 |
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Oxidative reactions of polyarylpyrroles. Part 3. Oxidative trimerization of 2,5-diphenylpyrrole Salvatore Petruso Liliana Lamartina Onofrio Migliara and Vincenzo Sprio pg 2642; DOI: 10.1039/P19810002642 |
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Sulphur extrusion. Part 4. A halogen-catalysed conversion of thiocarbonyl compounds into their corresponding oxygen analogues using alkoxides and hydroxide Harjit Singh Paramjit Singh and Nageshwar Malhotra pg 2647; DOI: 10.1039/P19810002647 |
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Reactivity of ketones in homogeneous catalytic hydrogenation with cationic rhodium complexes Hiroshi Fujitsu Eiichi Matsumura Kenjiro Takeshita and Isao Mochida pg 2650; DOI: 10.1039/P19810002650 |
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Pyrrole studies. Part 26. A novel thermochromic and photochromic pyrrole system Judith M. Brittain R. Alan Jones Richard O. Jones and Trevor J. King pg 2656; DOI: 10.1039/P19810002656 |
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Synthesis of 5-p-hydroxybenzyl-5,6-dihydro-2-naphthol, ()-sequirin D M. Parameswara Reddy and G. S. Krishna Rao pg 2662; DOI: 10.1039/P19810002662 |
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The structure of crotonitenone, a novel casbane diterpene from Croton nitens Sw. (Euphorbiaceae) Basil A. Burke Wilfred R. Chan Keith O. Pascoe John F. Blount and Percy S. Manchand pg 2666; DOI: 10.1039/P19810002666 |
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Benzoquinones and related compounds. Part 4. Thermolysis of the Diels–Alder adduct of 2-acetyl-5,6-dichloro-1,4-benzoquinone and cyclopentadiene: evidence for a partial retro-diene reaction Roy L. Beddoes J. Malcolm Bruce Harry Finch Leslie M. J. Heelam Ian D. Hunt and Owen S. Mills pg 2670; DOI: 10.1039/P19810002670 |
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Claisen rearrangement of meta-substituted allyl phenyl ethers J. Malcolm Bruce and Yusuf Roshan-Ali pg 2677; DOI: 10.1039/P19810002677 |
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Ene reaction of the active imino group. A novel synthesis of -amino-acids Osman Achmatowicz jun. and Marek Pietraszkiewicz pg 2680; DOI: 10.1039/P19810002680 |
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Some photochemical and oxidative conversions of pterocarpans and isoflavans: functional requirements for cyclization of isoflavans to pterocarpans Jaco C. Breytenbach Jan J. van Zyl Pieter J. van der Merwe Gerhardus J. H. Rall and David G. Roux pg 2684; DOI: 10.1039/P19810002684 |
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Reaction of dehydrodithizone with benzyne and diphenylcyclopropenethione. Isolation of N-(1,2-diphenyldiazonia)-1,3-benzothiazole-2-aminate and the formation of 2-phenylazo-4,6,7-triphenyl-4H-1,3,4-thiadiazepine-5-thione Kevin T. Potts Arthur J. Elliott George R. Titus David Al-Hilal Peter F. Lindley Gerhard V. Boyd and Timothy Norris pg 2692; DOI: 10.1039/P19810002692 |
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Conformational equilibria of eremophilanes, naturally occurring cis-decalin derivatives, studied by n.m.r. and c.d. spectroscopy Masahiro Tada Toshichika Sato Takeyoshi Takahashi Kazuo Tori Isao Horibe and Kaoru Kuriyama pg 2695; DOI: 10.1039/P19810002695 |
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Germacranolides of Erlangea cordifolia: structure and absolute stereochemistry of cordifene and cordifene 4,15-oxide by X-ray and spectrosopic methods Michael J. Begley Leslie Crombie W. Mary L. Crombie Ambrose K. Gatuma and Asafu Maradufu pg 2702; DOI: 10.1039/P19810002702 |
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Synthesis of bikaverin Nobuya Katagiri Jun Nakano and Tetsuzo Kato pg 2710; DOI: 10.1039/P19810002710 |
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Structures of four new oxygenated lupanes from Pleurostylia opposita(Celastraceae) Anura P. Dantanarayana N. Savitri Kumar M. Uvais S. Sultanbawa and Sinnathamby Balasubramaniam pg 2717; DOI: 10.1039/P19810002717 |
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3-Oxolup-20(29)-en-30-al, a new lupane from Gymnosporia emarginata(Celastraceae) Dharmassree B. T. Wijeratne Vijaya Kumar and M. Uvais S. Sultanbawa pg 2724; DOI: 10.1039/P19810002724 |
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Synthesis and reactions of C-sulphenylketenimines Jiro Motoyoshiya Iwao Yamamoto and Haruo Gotoh pg 2727; DOI: 10.1039/P19810002727 |
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The 13C and 1H n.m.r. spectra of homocubane, norsnoutane and their 9-keto- and 9,9-ethylenedioxy-derivatives, and a novel route to functionalised brendanes John E. Hamlin and Kenneth J. Toyne pg 2731; DOI: 10.1039/P19810002731 |
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t-Butyl bromide–dimethyl sulphoxide reactions. Pummerer-like reaction with carboxylic acids and N-protected amino-acids Arnaldo Dossena Rosangela Marchelli and Giuseppe Casnati pg 2737; DOI: 10.1039/P19810002737 |
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Transannular participation of some C-19 esters in reactions at C-20 of gibberellin A13 Braulio M. Fraga Antonio G. Gonzalez Melchior G. Hernandez Fernando G. Tellado James R. Hanson and Peter B. Hitchcock pg 2740; DOI: 10.1039/P19810002740 |
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1,3,2-Thiazaphospholidin-2-ones derived from ephedrine. Preparation and stereochemistry of ring-opening reactions C. Richard Hall and Nancy E. Williams pg 2746; DOI: 10.1039/P19810002746 |
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Synthesis of butenolides from -(phenylthio)-ketones and -esters: crystal structure of an intermediate -phenylthio--lacton Peter Brownbridge Ernst Egert Paul G. Hunt Olga Kennard and Stuart Warren pg 2751; DOI: 10.1039/P19810002751 |
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Synthesis of 2-substituted 3,4-dihydro-1,2-diazepines by the reactions of unsaturated ketones with hydrazides Patrick N. Anderson Carl B. Argo and John T. Sharp pg 2761; DOI: 10.1039/P19810002761 |
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Quinones and related compounds in higher plants. Part 16. Naphthoquinones from Radermachera sinica Hemsl. (Bignoniaceae) Kenichiro Inoue Cheng-Chang Chen Hiroyuki Inouye and Kaoru Kuriyama pg 2764; DOI: 10.1039/P19810002764 |
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Biosynthesis of porphyrins and related macrocycles. Part 14. Studies with [14C]isoporphobilinogen and four isomeric labelled pyrromethanes: specific conversion of the unrearranged pyrromethane NH3.AP.AP into haem and protoporphyrin-IX Alan R. Battersby John F. Beck Keith H. Gibson Gordon L. Hodgson Roger E. Markwell Edward McDonald Jacqueline Moron and Leon N. Nixon pg 2771; DOI: 10.1039/P19810002771 |
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Biosynthesis of porphyrins and related macrocycles. Part 15. Chemical and enzymic formation of uroporphyrinogen isomers from unrearranged aminomethylpyrromethane: separation of isomeric coproporphyrin esters Alan R. Battersby Dennis G. Buckley David W. Johnson Lewis N. Mander Edward McDonald and D. Clive Williams pg 2779; DOI: 10.1039/P19810002779 |
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Biosynthesis of porphyrins and related macrocycles. Part 16. Proof that the single intramolecular rearrangement leading to natural porphyrins (type-III) occurs at the tetrapyrrole level Alan R. Battersby Christopher J. R. Fookes Mary J. Meegan Edward McDonald and Hanns K. W. Wurziger pg 2786; DOI: 10.1039/P19810002786 |
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Syntheses of macrocyclic enzyme models. Part 4. Preparation and characterization of cationic octopus azaparacyclophanes Yukito Murakami Akio Nakano Kazunari Akiyoshi and Kiyoshi Fukuya pg 2800; DOI: 10.1039/P19810002800 |
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Syntheses of macrocyclic enzyme models. Part 5. Preparation and metal-co-ordination behaviour of [20]paracyclophane bearing 1,4-dihydronicotinamide and pyridine-2-carboxylic acid moieties as an alcohol dehydrogenase model Yukito Murakami Yasuhiro Aoyama and Jun-Ichi Kikuchi pg 2809; DOI: 10.1039/P19810002809 |
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Structures of ent-2,3-secoalloaromadendrane sesquiterpenoids, which have plant-growth-inhibitory activity, from Plagiochila semidecurrens(liverwort) Akihiko Matsuo Kazunori Atsumi Mitsuru Nakayama and Shûichi Hayashi pg 2816; DOI: 10.1039/P19810002816 |
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Drugs derived from cannabinoids. Part 8. The synthesis of side-chain analogues of 6a,10a-tetrahydrocannabinol Peter C. Meltzer Haldean C. Dalzell and Raj K. Razdan pg 2825; DOI: 10.1039/P19810002825 |
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Total synthesis of the protoberberine alkaloid (–)-xylopinine by photochemical 1,3-asymmetric induction Tetsuji Kametani Nanami Takagi Masahiro Toyota Toshio Honda and Keiichiro Fukumoto pg 2830; DOI: 10.1039/P19810002830 |
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Synthetic applications of N–N linked heterocycles. Part 16. Reactions between carbanions derived from carbon acids with pKa 7–14 and N-(2,6-dimethyl-4-oxopyridin-1-yl)pyridinium tetrafluoroborate: synthesis of 4-substituted pyridines, and observation of pyridine ringopening reactions Michael P. Sammes Christopher W. F. Leung and Alan R. Katritzky pg 2835; DOI: 10.1039/P19810002835 |
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Preparation of a range of NNNN-tetrasubstituted 1,8-diaminonaphthalenes Roger W. Alder Martin R. Bryce Nigel C. Goode Nigel Miller and Judith Owen pg 2840; DOI: 10.1039/P19810002840 |
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Concise syntheses of 3-methylenetetrahydrofuran-2-one derivatives and related systems Robert M. Adlington and Anthony G. M. Barrett pg 2848; DOI: 10.1039/P19810002848 |
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Mechanism of a novel synthesis of haemin c from protohaemin and L-cysteine. A Markownikoff-type radical addition reaction Shosuke Kojo and Seiyo Sano pg 2864; DOI: 10.1039/P19810002864 |
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Synthesis of 2H-1,3-oxazin-2-ones Ahmet E. Baydar and Gerhard V. Boyd pg 2871; DOI: 10.1039/P19810002871 |
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The chemistry of 6-dialkylamino-2H-1,3-oxazin-2-ones. Reversible thermal ring-opening and cycloaddition reactions with N-arylmaleimides and 1-diethylaminopropyne. X-Ray crystal structures of a 5H-2-pyridone and a 1H-2-pyridone Ahmet E. Baydar Gerhard V. Boyd Peter F. Lindley Frank Watson Paul W. Manley and Richard C. Storr pg 2878; DOI: 10.1039/P19810002878 |
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The chemistry of azides derived from N-substituted phthalamic and tetrahalogenophthalamic acids Ting Keung Au Ahmet E. Baydar and Gerhard V. Boyd pg 2884; DOI: 10.1039/P19810002884 |
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The action of amines on citraconic anhydride. X-Ray crystal structure of (Z)-2-methyl-3-pyrrolidinocarbonylpropenoic acid Ahmet E. Baydar Gerhard V. Boyd John Aupers and Peter F. Lindley pg 2890; DOI: 10.1039/P19810002890 |
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Marine alkaloids. Part 4. A formamide, flustrabromine, from the marine bryozoan Flustra foliacea Peter Wulff Jørgen S. Carlé and Carsten Christophersen pg 2895; DOI: 10.1039/P19810002895 |
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Biosynthesis of PR toxin by Penicillium roqueforti Anthony A. Chalmers Amelia E. de Jesus Charles P. Gorst-Allman and Pieter S. Steyn pg 2899; DOI: 10.1039/P19810002899 |
1,3,5,7-Tetramethylcyclohepta[1,2-c][4,5-c]dithiophen-4-ylium cation; a potential 14 -electron aromatic systemTrevor M. Brown and William Carruthers pg 2904; DOI: 10.1039/P19810002904 |
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Synthesis of 8,9,10-trimethoxyellipticine Michael J. E. Hewlins Anthony H. Jackson Ana-M. Oliveira-Campos and Patrick V. R. Shannon pg 2906; DOI: 10.1039/P19810002906 |
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Selective reduction of -olefinic amides and lactams by magnesium and methanol Roger Brettle and Sa'ad M. Shibib pg 2912; DOI: 10.1039/P19810002912 |
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Reactions of aryl cyclopropyl ketones. A new synthesis of aryl tetralones William S. Murphy and Sompong Wattanasin pg 2920; DOI: 10.1039/P19810002920 |
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Anodic oxidation. Part 17. The formation of alkyl methyl carbonates in the Hofer–Moest reaction in methanol Roger Brettle M. Akhram Khan and John D. Rowbottom pg 2927; DOI: 10.1039/P19810002927 |
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Base catalysed rearrangements involving ylide intermediates. Part 13. Further rearrangements of 2-oxidoanilinium ylides W. David Ollis Ratnasamy Somanathan and Ian O. Sutherland pg 2930; DOI: 10.1039/P19810002930 |
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Pyrimidine derivatives and related compounds. Part 37. Novel nucleophilic substitutions of 5-bromo-6-methyluracils or 5-bromo-6-bromomethyluracils with aromatic amines Kosaku Hirota Yoshihiro Yamada Yukio Kitade and Shigeo Senda pg 2943; DOI: 10.1039/P19810002943 |
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Acylation of N-arylbenzothiohydrazides and of their N-acyl-derivatives; 2-acylalkylidene-3-aryl-5-phenyl-2H-1,3,4-thiadiazolenes and related compounds Patrick D. Callaghan Arthur J. Elliott Sham S. Gandhi Martin S. Gibson Harold Mastalerz and Darko J. Vukov pg 2948; DOI: 10.1039/P19810002948 |
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Routes to 3-aryl-5-phenyl-2-thioacylmethylene-2H-1,3,4-thiadiazolenes Harold Mastalerz and Martin S. Gibson pg 2952; DOI: 10.1039/P19810002952 |
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Diterpene synthesis. Part 2. Acid-catalysed cyclisation of p-methoxyphenylethyltrimethylcyclohexanols Barry W. Axon Brian R. Davis and Paul D. Woodgate pg 2956; DOI: 10.1039/P19810002956 |
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Photo-induced transformations. Part 57. The formation of bridged oxabicyclic compounds by intramolecular radical addition of oxyl radicals generated from some A-homo-4a-cholesten-3-ol hypoiodites Hiroshi Suginome Shigeru Isayama Norio Maeda Akio Furusaki and Chuji Katayama pg 2963; DOI: 10.1039/P19810002963 |
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Oxidation reactions using sodium metaperiodate supported on silica gel Dharmendra N. Gupta Philip Hodge and J. Eric Davies pg 2970; DOI: 10.1039/P19810002970 |
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Purine studies. Part 24. Preparation of 1,6- and 7,8-dihydro-derivatives of 8-trifluoromethylpurines by reduction Adrien Albert pg 2974; DOI: 10.1039/P19810002974 |
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Rearrangement of 4-oxothiochroman-1-io(bismethoxycarbonyl)methanides to tetrahydro-1-benzothiepin-5-ones Yasumitsu Tamura Yasushi Takebe Chisato Mukai and Masazumi Ikeda pg 2978; DOI: 10.1039/P19810002978 |
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Assessment of racemisation in N-alkylated amino-acid derivatives during peptide coupling in a model dipeptide system John S. Davies and A. Karim Mohammed pg 2982; DOI: 10.1039/P19810002982 |
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Nitrile sulphides. Part 1. 1,3-Dipolar cycloaddition to carbonyl groups activated by trihaloalkyl substituents; synthesis and crystal structure of 1,3,4-oxathiazoles A. Margarida Damas Robert O. Gould Marjorie M. Harding R. Michael Paton John F. Ross and John Crosby pg 2991; DOI: 10.1039/P19810002991 |
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Allenes. Part 39. The synthesis of 3-alkyl-5-aminopyrazoles and 3H-indoles from allenic or acetylenic nitriles Z. Tanee Fomum Stephen R. Landor Phyllis D. Landor and George W. P. Mpango pg 2997; DOI: 10.1039/P19810002997 |
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Synthesis of selenium-containing para-phenylenediamines: novel antidegradants for natural rubber William J. E. Parr pg 3002; DOI: 10.1039/P19810003002 |
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Indole -nucleophilic substitution. Part 2. Formation of a [2]benzoxepino[4,3-b]indole and a pyrido[4,3:5,6]oxepino[3,2-b]indole Melanie M. Cooper Geoffrey J. Hignett and John A. Joule pg 3008; DOI: 10.1039/P19810003008 |
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Synthesis of the pyridine analogues of phthalide William R. Ashcroft Michael G. Beal and John A. Joule pg 3012; DOI: 10.1039/P19810003012 |
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Reaction of methyl gibberellate with triphenylphosphine and carbon tetrachloride James Z. Duri Braulio M. Fraga and James R. Hanson pg 3016; DOI: 10.1039/P19810003016 |
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The preparation of some ent-7-nor-5-gibberell-16-enes as potential gibberellin biosynthesis inhibitors James R. Hanson Christine L. Willis and Keith P. Parry pg 3020; DOI: 10.1039/P19810003020 |
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Base-catalysed epoxidation and reduction of 3-formyl-A-norandrost-3(5)-en-17-one James R. Hanson Peter B. Hitchcock and Harry J. Wadsworth pg 3025; DOI: 10.1039/P19810003025 |
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Photoaffinity labels for enzymes capable of binding glutathione or its disulphide Claudius D'Silva Andrew P. Seddon and Kenneth T. Douglas pg 3029; DOI: 10.1039/P19810003029 |
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Asymmetric reaction of (RS)-2-phenylpropanal with chiral aluminium alkoxides. Part 1 Jolanta Ma  li ska-Solich Irena Rudnicka and Zbigniew J. Jedliski pg 3034; DOI: 10.1039/P19810003034 |
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A general and practicable synthesis of polycyclic heteroaromatic compounds. Part 4. A rationale for the mechanism of the synthesis Janet L. Asherson Orhan Bilgic and Douglas W. Young pg 3041; DOI: 10.1039/P19810003041 |
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An asymmetric synthesis of synthetic intermediates to thienamycin and epithienamycins A and B Tetsuji Kametani Takayasu Nagahara and Masataka Ihara pg 3048; DOI: 10.1039/P19810003048 |
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Photochemistry of dehydrodipeptides related to -lactam antibiotics Prabir K. Sen Christopher J. Veal and Douglas W. Young pg 3053; DOI: 10.1039/P19810003053 |
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The nucleophilic reactivity of organophosphorus compounds. Part 4. The alkylation of phosphorus acid anions with 'onium keten acetals Alexander T. Zaslona and C. Dennis Hall pg 3059; DOI: 10.1039/P19810003059 |
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Intramolecular free radical functionalisation of the methyl group of 5-deoxyadenosine David Gani Alan W. Johnson and Michael F. Lappert pg 3065; DOI: 10.1039/P19810003065 |
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Electrophilic methylthiomethylation of enol ethers and activated aromatic compounds. Application of the former reaction to the synthesis of the macrocycle, 3,3,7,7,11,11,15,15-octamethyl-1,9-dithia-5,13-diaza-cyclohexadecane Robert McCrindle Alan J. McAlees and Donald K. Stephenson pg 3070; DOI: 10.1039/P19810003070 |
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The apicophilicity of the phenylseleno group in five-co-ordinate phosphoranes Matthew P. Johnson and Stuart Trippett pg 3074; DOI: 10.1039/P19810003074 |
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A novel synthetic approach to the ecdysone side-chain via furan derivatives Tetsuji Kametani Masayoshi Tsubuki and Hideo Nemoto pg 3077; DOI: 10.1039/P19810003077 |
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Pyrrolizidine alkaloid biosynthesis. Incorporation of 14C-labelled precursors into retronecine David J. Robins and John R. Sweeney pg 3083; DOI: 10.1039/P19810003083 |
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Structure and synthesis of pallescensin E utilising a modified Wadsworth–Emmons reaction Raymond Baker and Russell J. Sims pg 3087; DOI: 10.1039/P19810003087 |
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Electrochemical reduction of bicyclo[3,3,1]nonadienediones: synthesis of substituted barbaralanes John M. Mellor B. Stanley Pons and John H. A. Stibbard pg 3092; DOI: 10.1039/P19810003092 |
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Synthesis of substituted barbaralanes by electrochemical reduction of bridged 1,5-benzodiazepines John M. Mellor B. Stanley Pons and John H. A. Stibbard pg 3097; DOI: 10.1039/P19810003097 |
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Synthesis of the prostaglandin H2 analogue DL-9,11-ethano-9,11-dideoxaprostaglandin H2 Tetsuji Kametani Toshio Suzuki Shinko Kamada and Katsuo Unno pg 3101; DOI: 10.1039/P19810003101 |
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Intramolecular cyclization using methyl(bismethylthio)sulphonium salts. Part 1. 2,3-Dihydrobenzofurans Giuseppe Capozzi Vittorio Lucchini Franco Marcuzzi and Giorgio Modena pg 3106; DOI: 10.1039/P19810003106 |
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Synthesis of 2,5-dihydroxy-3,6-bis-(2-hydroxybenzyl)pyrazine Robert O. Cain and Alexander E. A. Porter pg 3111; DOI: 10.1039/P19810003111 |
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Reductive debromination and coupling reaction in the thermolysis of 5-bromouracils in N,N-dialkylamides. Cleavage of the C(5)–bromine bond by an initial electron-transfer process Magiochi Sako Mikio Suzuki Miyuki Tanabe and Yoshifumi Maki pg 3114; DOI: 10.1039/P19810003114 |
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Synthesis of optically active sulphilimines via chiral discrimination Rita Annunziata Mauro Cinquini Stefano Colonna and Franco Cozzi pg 3118; DOI: 10.1039/P19810003118 |
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Reactions between enaminones and enones. Part 2. C versus N-Alkylation with cyclohex-2-enone. Structure confirmation by reduction of a dienaminone derivative of dehydrated dimedone dimer Ibrahim Chaaban John V. Greenhill and Mohamed Ramli pg 3120; DOI: 10.1039/P19810003120 |
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Synthesis of 6,21-dioxo-5,22-diaza[10.10]paracyclophane and its structural characteristics Hiroki Kondo Hiroshi Okamoto Jun-Ichi Kikuchi and Junzo Sunamoto pg 3125; DOI: 10.1039/P19810003125 |
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Keten. Part 18. The 2 : 1 adducts of diphenylketen with cyclopentadiene Giles A. Taylor and Süleyman Yildirir pg 3129; DOI: 10.1039/P19810003129 |
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-Naphthol synthesis via knoevenagel condensation in the presence of molecular sieves Giles A. Taylor pg 3132; DOI: 10.1039/P19810003132 |
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On the nature of haematoporphyrin derivative Raymond Bonnett Richard J. Ridge Panayiotis A. Scourides and Morris C. Berenbaum pg 3135; DOI: 10.1039/P19810003135 |
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Addition reactions of heterocyclic compounds. Part 75. Reactions of dimethyl acetylenedicarboxylate with some N-methylindoles R. Morrin Acheson Michael C. K. Choi and Roy M. Letcher pg 3141; DOI: 10.1039/P19810003141 |
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Thermal rearrangements of 2-cyclopropylcycloalk-2-enones Gerald Pattenden and Derek Whybrow pg 3147; DOI: 10.1039/P19810003147 |
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Heterocyclic compounds with bridgehead nitrogen atoms. Part 9. Synthesis in the pyrrolo[2,1,5-de]quinolizine ([2.3.3]cyclazine) series starting from indolizines James W. Dick William K. Gibson Derek Leaver and John E. Roff pg 3150; DOI: 10.1039/P19810003150 |
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Preparation of the 15,6-lactone from 8,13H-tetrahydroabietic acid Brian E. Cross and Michael R. Firth pg 3158; DOI: 10.1039/P19810003158 |
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Unexpected substitution of the acyl group in isothiazole-ring formation. Attempted conversion of 1-acyl-2,2-diaminoethylenes into 2-acyl-3,3-diaminoacrylonitriles Srinivasachari Rajappa Mohan D. Nair Bhagwan G. Advani and Ramaswami Sreenivasan pg 3161; DOI: 10.1039/P19810003161 |
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Reaction pathways for arylcarbamoyl radicals and the cyclization of o-substituted phenylcarbamoyl radicals Rino Leardini Antonio Tundo and Giuseppe Zanardi pg 3164; DOI: 10.1039/P19810003164 |
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A stereoselective synthesis of corynantheine-type alkaloids via enamine annulation. Total synthesis of ()-dihydrocorynantheol and formal total synthesis of ()-corynantheine and ()-ajmalicine Tetsuji Kametani Naoaki Kanaya Hiroaki Hino Shyh-Pyng Huang and Masataka Ihara pg 3168; DOI: 10.1039/P19810003168 |
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Acetalation of sucrose by acetal exchange with concomitant fission of the glycosidic bond. Some new acetals of D-glucose and methyl -D-fructofuranoside Raul Cortes-Garcia Leslie Hough and Anthony C. Richardson pg 3176; DOI: 10.1039/P19810003176 |
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Analysis of the tautomeric structures of auronols by 13C n.m.r. and comparison with the isomeric flavonols Andrew Pelter Robert S. Ward Rudolf Hänsel and Faies Khaliefi pg 3182; DOI: 10.1039/P19810003182 |
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Analysis of the chirality of [16O,17O,18O] phosphate esters by 31P nuclear magnetic resonance spectroscopy Richard L. Jarvest Gordon Lowe and Barry V. L. Potter pg 3186; DOI: 10.1039/P19810003186 |
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The preparation of some specifically tritium labelled carcinogenic hydrocarbons and their covalent binding to DNA G. Michael Blackburn Andrew J. Flavell Lawrence Orgee James P. Will and Gillian M. Williams pg 3196; DOI: 10.1039/P19810003196 |
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Synthesis of the mangostins Hiok-Huang Lee pg 3205; DOI: 10.1039/P19810003205 |
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Generation of 3-methoxy-3a-methyl-3aH-indene and study of its cycloaddition reactions Thomas L. Gilchrist Charles W. Rees and David Tuddenham pg 3214; DOI: 10.1039/P19810003214 |
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Routes to 3aH-indenes. Deprotonation and methylation of some indenones bearing ring junction substituents Thomas L. Gilchrist Charles W. Rees and David Tuddenham pg 3221; DOI: 10.1039/P19810003221 |
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Synthesis of an isolable 4aH-benzocycloheptene, ethyl 4-methoxy-4a-methyl-4aH-benzocycloheptene-5-carboxylate, and a study of its thermal rearrangement Robert H. Bradbury Thomas L. Gilchrist and Charles W. Rees pg 3225; DOI: 10.1039/P19810003225 |
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Investigation of an electrocyclisation route to the 7bH-cyclopent[c,d]-indene system Robert H. Bradbury Thomas L. Gilchrist and Charles W. Rees pg 3234; DOI: 10.1039/P19810003234 |
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Reaction of 9-substituted adenines with chloroacetic anhydride. Formation of novel mesoionic imidazopyrines Yoshifumi Maki Mikio Suzuki Munehiro Suzuki Keiji Kameyama and Magoichi Sako pg 3239; DOI: 10.1039/P19810003239 |
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Olivanic acid analogues. Part 1. Total synthesis of the 7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate system and some related -lactams John H. Bateson Andrew J. G. Baxter Patricia M. Roberts Terence C. Smale and Robert South-Gate pg 3242; DOI: 10.1039/P19810003242 |
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Formation and dienophilic reactions of transient C-nitrosocarbonyl compounds Gordon W. Kirby and James G. Sweeny pg 3250; DOI: 10.1039/P19810003250 |
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Pyrrolylpolyenes. Part3. Synthesis of all-(E)-wallemia C and stereochemistry of natural wallemia C Masayoshi Ito Kiyoshi Tsukida and Trevor P. Toube pg 3255; DOI: 10.1039/P19810003255 |
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Oxymetallation. Part 14. Modified procedures for t-butyl peroxymercuriation and bromodemercuriation that lead to an improved, stereoselective, conversion of non-terminal alkenes into -bromoalkyl peroxides A. J. Bloodworth and J. L. Courtneidge pg 3258; DOI: 10.1039/P19810003258 |
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Oxymetallation. Part 15. Oxidation of hex-1-ene by thallium(III) trifluoroacetate in methanol A. J. Bloodworth and David J. Lapham pg 3265; DOI: 10.1039/P19810003265 |
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Prostaglandin endoperoxide model compounds. Part 2. Stereospecific synthesis of isomeric 5-bromo-2,3-dioxabicyclo[2.2.1]heptanes and 2-bromo-6,7-dioxabicyclo[3.2.1]octanes A. J. Bloodworth and Henny J. Eggelte pg 3272; DOI: 10.1039/P19810003272 |
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Photoresponsive crown ethers. Part 3. Photocontrol of ion extraction and ion transport by several photofunctional bis(crown ethers) Seiji Shinkai Kazuyoshi Shigematsu Yumiko Kusano and Osamu Manabe pg 3279; DOI: 10.1039/P19810003279 |
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O-(diphenylphosphinyl)hydroxylamine: preparation and some characteristic chemical reactions Martin J. P. Harger pg 3284; DOI: 10.1039/P19810003284 |
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Photochemistry of halogenocarbon compounds. Part 4. Photochemical conversions of some fluorinated aza- and diaza-cyclohexadienes Robert N. Barnes Richard D. Chambers Robert D. Hercliffe and Roderick Middleton pg 3289; DOI: 10.1039/P19810003289 |
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Biosynthesis of -cyclopiazonic acid. Steric course of proton removal during the cyclisation of -cyclopiazonic acid in Penicillium griseofulvum Amelia E. de Jesus Pieter S. Steyn Robert Vleggaar Gordon W. Kirby Michael J. Varley and Nicolaas P. Ferreira pg 3292; DOI: 10.1039/P19810003292 |