Condensation of 2α,3α- and 2β,3β-epoxy-5α-androstanes with secondary cyclic amines gives 2β-amino-3α-ols and 3α-amino-2β-ols respectively; reaction of a 2β-bromo-3α-hydroxy-5α-androstane with the same cyclic amines gives the 2α,3α-epoxide in contrast to the 3α-bromo-2β-hydroxy-isomer, which undergoes substitution without inversion to give the corresponding 3α-amino-2β-ol. The mechanisms of these reactions
2α,3α-和2β,3β-环氧-
5α-雄烷酮与仲环胺的缩合分别得到2β-
氨基-3α-醇和3α-
氨基-2β-醇。2β-
溴-3α-羟基-5α-
雄甾烷与相同的环胺反应生成2α,3α-环氧化合物,与3α-
溴-2β-羟基异构体相反,该取代基不经转化即得到相应的3α -
氨基-2β-醇。讨论了这些反应的机理。还描述了2-吗啉代-
5α-雄烷-1-烯-3,17-二酮的制备。