文章基本信息

标题：C26-Analogs of naturally occurring C27 bile alcohols.
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作者：B Dayal ; S Shefer ; G S Tint 等
期刊名称：JLR Papers In Press
印刷版ISSN：0022-2275
电子版ISSN：1539-7262
出版年度：1976
卷号：17
期号：5
页码：478-484
语种：English
出版社：American Society for Biochemistry and Molecular Biology
摘要：C26 Bile of the 24-nor-5beta-cholestane series were prepared starting from methyl cholate. A Grignard reaction of methyl magnesium iodide with methyl cholate yielded 24-nor-5beta-cholestane-3alpha, 7alpha, 12alpha, 25-tetrol which was dehydrated TO FORM a mixture of 24-nor-5beta-cholest-23-ene-3alpha, 7alpha, 12 alpha-triol and the corresponding delta25 compound. Oxidation of the former with OsO4 yielded 24-nor-5beta-cholestane-3alpha, 7alpha, 12alpha, 23epsilon, 25pentol, while catalytic hydrogenation of a mixture of the delta23 and delta25 triols resulted in the formation of 24-nor-5beta-cholestane-3-alpha-, 7alpha-12alpha-triol. The structures of these new compounds were confirmed by infrared and nuclear megnetic resonance spectrometry and by gas-liquid chromatography-mass spectrometry.