SYNTHESIS OF C-GLYCOSIDES - USE OF AN ARSENIC DERIVATIVE

被引:12
|
作者
DHEILLY, L [1 ]
LIEVRE, C [1 ]
FRECHOU, C [1 ]
DEMAILLY, G [1 ]
机构
[1] FAC SCI AMIENS,CHIM ORGAN LAB,VALORISAT GLUCIDES GRP,33 RUE ST LEU,F-80039 AMIENS,FRANCE
关键词
(CARBOMETHOXYMETHYL)TRIPHENYLARSONIUM YLIDE; ARSONIUM SALT; ALDOSES; E-OLEFINS; C-GLYCOSYL COMPOUNDS;
D O I
10.1016/S0040-4039(00)73808-1
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Reaction of arsenic ylides with pyranose and furanose carbohydrates mainly leads to E-olefinic derivatives. Cyclisation of the olefinic derivatives obtained from 2,3,4,6-tetra-O-benzyl-D-glucose and D-galactose, promoted by ZnBr2, gives C-glycosyl compounds with high stereoselectivity. One the other hand, reaction of the corresponding arsonium salt, in presence of zinc, with a furanose derivative gives directly and stereosectively the beta-C-glycosyl compound.
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页码:5895 / 5898
页数:4
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