CHINESE CHEMICAL LETTERS 

Vol. 13, No. 7, 2002

CONTENTS

Tetrahydrofuran ring-opening with acyloxyphosphonium bromide cata-

lyzed by zinc bromide: an effective method for the preparation of 4-bromo-

butyl esters¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­.............¡­.. H. Y. WU, J. C. DING, S. WANG

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589

1,3-Dipolar cycloaddition of substituted benzonitrile oxide to 5-(R)-(l-menthyloxy)-2(5H)-furanone¡­¡­.......H. H. HUANG, X. ZHANG, Q. H. CHEN

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593

Preparation and reactions of pyridinium ylids via decarboxylation of pyri-dinium betaines¡­¡­¡­........¡­..¡­... S. S. LIN, J. M. W., X. WANG, C. Y. LI

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597

Organophosphorus compound DEPBT as a coupling reagent for oligopeptides and peptoids synthesis: studies on its mechanism¡­¡­¡­¡­.....

¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­.¡­¡­...¡­¡­..¡­¡­¡­¡­.... H. LIU, L. XIA, Y. H. YE

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601

Efficient synthesis of 2,6-diphenyl-4-arylpyrylium tetrafluoroborate¡­.........

¡­¡­.¡­¡­...¡­¡­¡­¡­¡­¡­¡­¡­...¡­¡­¡­¡­...¡­¡­S. S. LIN, C. Y. LI, X. WANG

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605

Synthesis and properties of polyetherketones containing sulfide and phthalazinone¡­...¡­.....¡­¡­G. X. LIAO, X. G. JIAN , X. Y. GUO, J. Y. WANG

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607

The synthesis of third-order optical nonlinear organic polyheterocyclic materials¡­¡­....¡­J. R. GAO, B. XIANG, W. G. SHAN, M. HUANG, L. B. CHENG

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609

Synthesis and vasodilatory activities of new pyrazolo[3,4-d] pyrimidin-4-one derivatives¡­¡­¡­¡­..¡­¡­¡­¡­¡­¡­....¡­P. GONG, Y. F. ZHAO, D. WANG

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613

A new convenient method for the resolution of 1, 1¢-binaphthalene-2, 2¢-diol via a phosphite using (-)-menthol as resolving agent¡­¡­¡­¡­¡­¡­¡­

....................................... J. X. CAI , Z. H. ZHOU, K. Y. LI, C. H. YEUNG, C. C. TANG

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617

Two new dibenzofurans from the underground parts of Ligularia intermedia¡­¡­¡­¡­¡­.¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­.

.....¡­M. ZHANG, Z. T. WANG, H. L. QIN, X. G. ZHAO, G. J. XU, J. X. LI, T. NAMBA

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620

A new xanthone derivative from Hypericum erectum¡­¡­¡­¡­¡­¡­¡­...¡­¡­

¡­.¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­...¡­..¡­¡­.. T. Y. AN, L. H. HU, Z. L. CHEN

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623

An acidic polysaccharide from Tribulus terrestris¡­¡­¡­¡­.¡­¡­¡­¡­¡­¡­¡­

¡­¡­¡­¡­¡­¡­¡­.¡­¡­¡­¡­¡­¡­¡­¡­.......... H. S. CHEN, W. N. LEUNG , Y. X. XU

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625

Two new steroidal glycosides from fermented leaves of Agave Americana¡­....¡­¡­¡­¡­¡­........¡­J. M. JIN, X. K. LIU, R. W. TENG, C. R. YANG

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629

Two new steroidal saponins from Tacca plantaginea¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­

¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­..¡­¡­¡­¡­..¡­. H. Y. LIU, C. X. CHEN

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633

A new triterpenoid from ¡°Gualou-xiebai-baijiu-tang¡± consisting of Fructus Trichosanthis and Bulbus allii macrostemi¡­.......¡­.X. J. HE, F. QIU, X. S. YAO

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637

A novel diterpenoid,11-O-b-D-glucopyranosylneotriptophenolide, from Tripterygium wilfordii Hook. f¡­¡­..S. ZHAO, G. R. CHEN, G. Z. YANG, Y. C. LI

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 641

Conformational study of 8-C-glucosyl-prunetin by dynamic NMR spectros-

copy¡­¡­¡­........ P. C. ZHANG, Y. H. WANG, X. LIU, X. YI, R. Y. CHEN, D. Q. YU

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645

Electrochemical behavior and its electrocatalytic activity of a p-mo hetero-polyanion modified ITO electrode¡­¡­¡­¡­............................................

¡­¡­¡­¡­¡­¡­¡­............................¡­¡­¡­X. F. QIU, J. Z. XU, J. J. ZHU, H. Y. CHEN

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649

Cyclic voltammetric responses of nitrate reductase on chemical modified electrodes¡­¡­¡­¡­¡­¡­..¡­..¡­Y. R. SONG, H. Wu, X. X. CHEN, H. B. SHAO

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653

Analysis of amino acids in a single human red blood cell by capillary zone electrophoresis with intracellular NDA-derivatization and electrochemical detection¡­...¡­¡­. Q. DONG, X. L. WANG, L. L. ZHU, W. R. JIN

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655

Computer simulation of insoluble Pr(III) speciation in human interstitial fluid¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­.¡­..¡­¡­.. H. Y. ZHANG, X. LU, C. J. NIU, J. Z. NI

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658

Rapid in-situ determination of chromium (VI) in water using modified diphenylcarbazine with citrate¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­

¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­..... S. P. XU, H. W. CHEN, A. M. YU, Q. H. JIN, H. Y. LIAO

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660

Theoretical studies on the abstraction reaction of atomic O (3P) with Si2H6

¡­¡­¡­¡­¡­¡­.¡­¡­¡­..¡­¡­...... Q. Z. ZHANG, C. S. WANG, S. K. WANG, Y. S. GU

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662

Study on the electro-reduction of perfluorodecalin¡­¡­¡­¡­¡­¡­¡­¡­¡­...¡­

¡­¡­¡­¡­¡­¡­¡­¡­....¡­¡­C. Z. ZHANG, J. L. LEI, S. M. CAI, H. TIAN, M. Z. YANG

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666

Adsorption kinetics of alkyl polyglucoside at the air-solution interface¡­¡­.¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­.......¡­. J. L. CHAI, G. Z. LI, G. Y. ZHANG

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670

Synthesis of a novel blue-light-emitting polymer material bearing coumarin pendants¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­.....................................

¡­¡­¡­¡­¡­..... Z. Y. LU, T. S. YUAN, Y. L. CHEN, X. Q. WEI, W. G. ZHU, M. G. XIE

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674

Helix-sense-selective polymerization of N,N-diphenyl (meth)acrylamide by anionic catalysts¡­¡­¡­¡­¡­..... H. XUE, Y. A. XU, B. YU, L. X. GAO, M. X. DING

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678

Polymerization of 4-vinylpyridine by lanthanide coordination catalyst¡­¡­.

¡­¡­..¡­..¡­¡­¡­¡­¡­¡­¡­¡­......... G. H. TAN, Y. F. ZHANG, Z. G. HU, Z. Q. SHEN

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681

Preparation of semi-interpenetrating polymer network of silicon rubber and poly(methyl methylacrylate) using supercritical CO2¡­¡­¡­¡­¡­¡­...¡­

...¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­..... Z. M. LIU, J. Q. WANG, G. Y. YANG, B. X. HAN

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683

Copolymerization of styrene with N-phenylmaleimide by rare earth coordination catalysts¡­¡­¡­¡­.¡­¡­¡­.....¡­... Y. B. LU, W. L. SUN, Z. Q. SHEN

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685

A new activation method for electroless metal plating: palladium laden via bonding with self-Assembly monolayers¡­¡­¡­¡­¡­¡­..¡­¡­¡­.. .¡­.L. N. XU,

 ...........J. H. LIAO, L. HUANG, D. L. OU, K. C. ZHOU, H. Q. ZHANG, N. GU, J. Z. LIU

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687

Preparation of porous alumina film on aluminum substrate by anodization in oxalic acid¡­¡­¡­¡­¡­¡­¡­¡­¡­........¡­¡­...¡­K. HOU, J. P. TU, X. B. ZHANG

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689

Absorption spectra of the 4f electron transitions of the Nd, Ho and  and Er complexes with 1-cyclopyropyl-6-fluoro-1,4-dihydro-7-(4-ethyl-1-pipera-

zinyl)-4-oxo-3-quinoline carboxylic acid hydrochloride in the presence of TX-100¡­¡­¡­¡­¡­..........¡­N. X. WANG, W. JIANG, X. Q. XU, F. X. LIU, L. Z. REN

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693

Novel monomeric phenanthroline - thallium(III) complexes multinuclear NMR characterization in organic solvents¡­¡­.. .¡­¡­.¡­G. B. MA, J. GLASER

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695