Ausgehend von Cholesten-(1)-on-(3) (IV) wurden 1-Keto-cholestan (XX), 1 α-Oxy-cholestan (XVIII) und 1 β-Oxy-cholestan (XXI) auf eindeutigem Wege in Kristallen bereitet.
Ausgehend von Cholesten-(1)-on-(3)(IV)wrist克里斯塔伦(Kristallen)的1-酮胆甾醇(XX),1α-羟基胆甾烷(XVIII)和1β-羟基胆甾烷(XXI)贝雷特。
Studies on epoxides—VI
作者:M. Weissenberg、D. Lavie、E. Glotter
DOI:10.1016/s0040-4020(01)93301-0
日期:1973.1
Treatment of 1,2-epoxy-3-ketosteroids with tosylhydrazine and sodium borohydride in methanol lead to mixtures consisting of (i) ring A seco-acetylenic alcohols, (ii) methoxyhydrins formed by opening of the epoxide ring following the carbonyl reduction, and (iii) an epoxy-3,3-di- methylketal. For the corresponding 4-methylene derivative, the ring A fragmentation product was found to be the conjugated