(3S,5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-10,13-dimethyl-3-tri(propan-2-yl)silyloxy-1,2,3,4,5,6,7,8,9,11,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-12-one 在
sodium 作用下,
以
异丙醇 、
甲苯 为溶剂,
反应 2.0h,
以77%的产率得到(3S,5S,8R,9S,10S,12R,13S,14S,17S)-10,13-dimethyl-3-tri(propan-2-yl)silyloxy-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-12,17-diol