CHINESE CHEMICAL LETTERS 

Vol. 11, No. 1, 2000

CONTENTS

A stereoselective approach to S-vinyl thioesters from alkynes, elemental sulfur and acyl chlorides…………...……..…J. H. WANG, Q. X. XU, X. HUANG

1

Intramolecular aldol condensation of a-oxo ketene dibenzylthioacetals: A facile route to substituted thiophenes……………….………………………...

………………………………………......M. WANG, Q. LIU, M. X. ZHAO, L. M. WANG

3

Addition of organosamarium reagents to α,β-unsaturated esters…….....…...

……………………………………………........Y. F. ZHENG, W. L. BAO, Y. M. ZHANG

5

Synthesis of a new chiral cyclic b-amino alcohol…....................................…….

………………………………………………....….Z. X. SHEN, J. LIANG, Y. W. ZHANG

9

The synthesis of 4-arylcarbonyl-3-methoxycarbonyl-2-phenylfurans by Friedel-Crafts acylation reactions…..………………………………………...

……………………………......…..S. S. LIN, J. H. YU, J. M. WANG, B. YANG, X. L. YE

11

Total synthesis of machilin A…..…….....W. X. GU, A. X. WU, Q. GAO, X. F. PAN

15

Studies on the synthesis and property of a new podand-armed calix[4]arene derivative……………………….......….Y. J. XING, Z. X. ZHOU, L. MA, Z. W. LU

17

Synthesis  and  herbicidal  activities  of  N’-(substituted  pyrimidin-2-yl)-N-substituted  phenoxyacetyl  thiourea  derivatives….....................................

……………………………………………………....….S. J. XUE, J. S. ZOU, H. J. YANG

19

Synthesis and optical limiting in copolymers of C₆₀ and 1-phenyl-1-butyne

…………………………………................…....H. Y. XU, S. Y. GUANG, B. Z. TANG

21

Metal 2-hydroxy-1-naphthaldehyde thiosemicarbazone (Me-HNT) complexes–A new kind of biomimic enzyme catalyst………………..……….

………........M. DU, F. Z. LIANG, B. TANG, Y. J. LUO, H. X. SHEN, B. TENG, Y. LIU

23

Synthesis of polymer-bonded quaternary ammonium type metal porphyrins

………………………………………….........................…..Z. Y. LI, C. LI, X. Y. WU

27

Facile synthesis of chiral conjugated polymer based on BINOL skeleton…...

…………….....…..C. E. DONG, Y. G. ZHI, Z. L. YU, L. F. ZHANG, Albert. S. C. CHAN

29

A proposed mechanism of photocatalytic oxidation of trichloroethylene in gas phase……………………………………....…….G. H. LI, H. L. MA, W. Z. AN

31

Mechanism of cleaving DNA through hydrolysis of a novel complex of Mg containing dien ligand…………………….….P. YANG, A. X. SONG, X. Y. FAN

35

Cypripediquinone A, a new phenanthraquinone from Cypripedium macranthum (orchidaceae) …………...….J. H. JU, J. S. YANG, J. LI, P. G. XIAO

37

A cytotoxic saponin with two monoterpenoids from Albizia julibrissin

...………………………...K. ZOU, J. R. CUI, Y. Y. ZHAO, R. Y. ZHANG, J. H. ZHENG

39

Two new diterpenoids from Isodon rubescens……………………..……..…….

………………………………......B. L. LI, S. N. CHEN, Z. X. SHI, X. TIAN, Y. Z. CHEN

43

Triterpenoids from Fuscoporia obliqua…......J. HE, X. Z. FENG, B. ZHAO, Y. LU

45

A new triterpenoid saponin from the seeds of Vaccaria segetalis……….........

…….......S. M. SANG, M. L. ZOU, A. N. LAO, Z. L. CHEN, J. UZAWA, Y. FUJIMOTO

49

Two new gallotannins from Pistacia weinmannifolia……….………..………..

…………………………….A. J. HOU, L. Y. PENG, Y. Z. LIU, Z. W. LIN, H. D. SUN

53

Two new C₂₉ sterols from Clerodendrum colebrookianum……………….…...

……………………………….....H. YANG, S. X. MEI, B. JIANG, Z. W. LIN, .H. D. SUN

57

Study on chemiluminescence reactions of lucigenin and reductants by flow injection analysis……………………………………...……..Z. J. ZHU, J. R. LU

61

Simultaneous chiral separation using a combinatorial molecular imprin-

 ting phase…...............J. F. WANG, L. M. ZHOU, X. L. LIU, Q. H. WANG, D. Q. ZHU

65

Synthesis and characterization of water-soluble carboxymethyl-cyclodex-

 trin polymer as capillary electrophoresis chiral selector………..............…..

…………………....……………X. Y. SHI, R. F. FAN, Y. Q. ZHANG, J. L. GU, R. N. FU

69

Preparation of platinum implanted glassy carbon electrode and electro-

oxidation of formic acid and formaldehyde………………...…………………..

………………………….……………....….C. Z. ZHANG, J. YANG, X. L. LU, Z. D. WU

71

The characterization of comblike polymer electrolyte by means of NMR…..

……………………………………………………………………….......Z. J. JIANG, L. QI

75

Direct Electrochemistry of myoglobin in DDAB-clay composite films

....………………………………………………………………..N. F. HU, Z. LI, H. Y. MA

79

The electrochemical characteristics of multilayer assembly of hemoglobin and polystyrene sulfonate at self-assembled monolayer surface…….H. SUN

81

Gas phase polymerization of ethylene with supported titanium-nickel catalysts……………………….....J. M. HU, H. H. WANG, J. L. WU, Q. X. ZHANG

85

A novel CFC-12 hydrolysis catalyst: WO₃/SnO₂………………………………

……………………………………………….......Z. MA, W. M. HUA, Y. TANG, Z. GAO

87

A novel way to prepare g-Al₂O₃ supported SO₄^2-/ZrO₂ solid superacid catalysts for n-butane isomerization………………………………………….

……………………………………....…T. LEI, Y. TANG, W. M. HUA, J. S. XU, Z. GAO

89

Synthesis and crystal structure of [NiL₂(H₂O)₂](ClO₄)₂ L=MBPT=4-p-methylphenyl-3,5-bis-(pyridin-2-yl)-1,2,4-triazole………............................

………..S. C. SHAO, D. R. ZHU, T. W. WANG, Y. ZHANG, S. S. S. RAJ, H. K. FUN

93