Described is a new process for producing 7.beta.-substituted-4-aza-5.alpha.-androstan-3-ones and related compounds which are 5.alpha.-reductase inhibitors, consisting of reducing the corresponding androsteneone with lithium and liquid ammonia, contacting the product with an isomerizing agent, oxidizing the product to a seco acid and reacting that seco acid with an amine to cyclize to form 4-aza-5.alpha.-androstan-3-ones.
描述了一种生产7-beta-取代-4-aza-5-alpha-雄烷-3-酮及其相关化合物的新工艺,它们是5-alpha-还原酶
抑制剂,包括使用
锂和液
氨还原相应的
雄烯酮,将产物与异构化剂接触,将产物氧化为次酸,然后将该次酸与胺反应,使其环化形成4-aza-5.alpha.-雄烷-3-酮。