(3S,6R,8R,9S,10R,13S,14S,17S)-6-Bromo-17-(tert-butyl-dimethyl-silanyloxy)-10,13-dimethyl-3-nonafluorobutyl-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol 在
lithium aluminium tetrahydride 作用下,
以
乙醚 为溶剂,
反应 1.0h,
以65%的产率得到(3S,8R,9S,10R,13S,14S,17S)-17-(tert-Butyl-dimethyl-silanyloxy)-10,13-dimethyl-3-nonafluorobutyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol