(8S,9R,13S,14S,17S)-3-Benzyloxy-17-hydroxy-13-methyl-6,7,8,9,12,13,14,15,16,17-decahydro-cyclopenta[a]phenanthren-11-one 在
aluminum isopropoxide 作用下,
以
异丙醇 为溶剂,
生成
(8S,9R,11S,13S,14S,17S)-3-Benzyloxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-11,17-diol