CYCLIZATION OF HYDROXY ENOL ETHERS - A STEREOCONTROLLED APPROACH TO 3-DEOXY-D-MANNO-2-OCTULOSONIC ACID CONTAINING DISACCHARIDES

被引：37

作者：

HAUDRECHY, A

SINAY, P

机构：

[1] Laboratoire de Chimie, U.R.A. 1110, Ecole Normale Supérieure, 75231 Paris Cidex 05

来源：

JOURNAL OF ORGANIC CHEMISTRY | 1992年 / 57卷 / 15期

关键词：

D O I：

10.1021/jo00041a017

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A method for the preparation of the carboxylic acids 14 and 15 has been developed, starting from known 2,3,5,6-di-O-isopropylidene-D-mannofuranose. Esterification of 14 and 15 with methanol, methyl 2,3,4-tri-O-benzyl-alpha-D-glucopyranoside, and 1,2,5,6-di-O-isopropylidene-alpha-D-glucofuranose, followed by reaction with Tebbe reagent and selective deprotection gave, respectively, the key complex hydroxy enol ethers 20, 26, and 35. Stereoselective iodocyclization, followed by transformation of the CH2I appendage into a methyloxycarbonyl group, gave the corresponding protected KDO-containing disaccharides.

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页码：4142 / 4151

页数：10

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