SYNTHESIS OF SOME 2,5-DISUBSTITUTED DERIVATIVES OF L-RHAMNOSE

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作者：
VISHWANADHAM, G
机构：
来源：
INDIAN JOURNAL OF CHEMISTRY SECTION B-ORGANIC CHEMISTRY INCLUDING MEDICINAL CHEMISTRY | 1992年 / 31卷 / 09期
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O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Methyl 2,5-di-O-methyl-L-rhamnofuranoside (4) has been prepared by selective isopropylidenation of L-rhamnose-1,1-dimethylene dithioacetal (1) to give dithioacetal (2) which on methylation in the presence of sodium hydride-methyl iodide in dry THF furnish dithioacetal (3). Dethioacetalation of 3 with mercuric chloride-mercuric oxide in aq. acetonitrile followed by methyl glycosylation with 2% methanolic HCI afford compound 4.
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页码：624 / 625
页数：2
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