作者:S. R. Pathak、G. H. Whitham
DOI:10.1039/j39680000193
日期:——
A synthesis of 2,2-dimethylcholesterol (VI) from 5α-cholestan-3-one is described. Solvolysis of the methane-sulphonate of (VI) gives as the major product the corresponding cycloalcohol, 2,2-dimethyl-3α,5-cyclo-5α-cholestan-6β-ol. Apparently the cationic product-determining intermediate reacts predominantly by co-ordination with solvent at C-6.
描述了由5α-胆甾烷-3-酮合成2,2-二甲基胆固醇(VI)。(VI)的甲磺酸盐的溶剂分解产生相应的环醇作为主要产物,即2,2-二甲基-3α,5-环-5α-胆甾醇-6β-醇。显然,决定阳离子产物的中间体主要通过与溶剂在C-6配位反应。