(6R,7R,8R,9S,13S,14S,17S)-3-Methoxy-13-methyl-6,7,8,9,11,12,13,14,15,16,17,20-dodecahydro-cyclopropa[6,7]cyclopenta[a]phenanthren-17-ol 在
二异丁基氢化铝 作用下,
以
甲苯 为溶剂,
以89%的产率得到(6R,7R,8R,9S,13S,14S,17S)-13-Methyl-6,7,8,9,11,12,13,14,15,16,17,20-dodecahydro-cyclopropa[6,7]cyclopenta[a]phenanthrene-3,17-diol