Synthesis of the allylic gonadal steroids, 3α-hydroxy-4-pregnen-20-one and 3α-hydroxy-4-androsten-17-one, and of 3α-hydroxy-5α-pregnan-20-one
作者:J.P. Wiebe、C. Deline、K.D. Buckingham、Vinod Dave、J.B. Stothers
DOI:10.1016/0039-128x(85)90064-9
日期:1985.1
were also used for the reduction of 5 α -pregnane-3,20-dione to 3 α -hydroxy-5 α -pregnan-20-one (3 α -HP). The yields were about 15%, 50%, and >90% for 3 α -DHP, 3 α -HA and 3 α -HP, respectively. Structures of the products, including the 3 β -isomers and the 17 α -epimer, formed in these reactions were determined by NMR and mass spectroscopic methods.
摘要 一种方便合成最近分离的烯丙基性腺类固醇 3 α -羟基-4-孕烯-20-酮 (3 α -二氢孕酮; 3 α -DHP) 和 3 α -羟基-4-雄甾烯-17-的方法一种 (3 α -HA),是使用 4-pregnene-3,20-dione(孕酮)和 4-androstene-3,17-dione 作为底物和三甲基硼氢化钾(KS-Selectride)作为还原剂开发的。类似的反应也用于将 5 α -pregnan-3,20-dione 还原为 3 α -hydroxy-5 α -pregnan-20-one (3 α -HP)。3α-DHP、3α-HA和3α-HP的产率分别为约15%、50%和>90%。在这些反应中形成的产物的结构,包括 3 β -异构体和 17 α -差向异构体,通过核磁共振和质谱方法确定。