Treatment of 15β, 16β-epoxy-5α-androstan-17-one with hydrazine and toluene-p-sulphonic acid in air gives 5α-androstan-15β-ol; this step markedly improves the chemical route to 5α-androstan-15-one from the 3-ketone. The 15-ketone is also readily obtained from 12β,15α-dihydroxy-5α-androstan-3-one (prepared by microbiological hydroxylation of 5α-androstan-3-one).Two series of substituted (mainly oxygenated)
在空气中用
肼和
甲苯-对-
磺酸处理15β,16β-环氧-
5α-雄烷-17-一,得到
5α-雄烷-15β-醇。该步骤显着改善了从3-酮到5α-androstan-15-one的
化学路线。15酮也很容易从12β,15α-dihydroxy-5α-androstan-3-one(通过5α-androstan-3-one的微
生物羟基化反应制得)中获得。描述了两个系列的取代(主要是被氧化的)雄烷酮:在15位或15和17位被取代,以及在12位和15位,或在3位,12位和15位被取代的那些。