17β-Acetoxy-androstane derivatives containing two potential sites of unsaturation in rings A and B undergo rearrangement to anthrasteroids on treatment with acetyl bromide and hydrogen bromide generated in situ from acetyl bromide and propan-2-ol.
在环A和环B中含有两个潜在的不饱和位点的17个β-乙酰氧基-雄烷衍
生物在经过
乙酰溴和由
乙酰溴和丙-2-醇原位生成的
溴化氢处理后,重新排列为类
固醇。