(8R,9S,13S,14S,16R,17R)-17-(3,3-Dimethyl-but-1-ynyl)-3-methoxy-13-methyl-6,8,9,11,12,13,14,15,16,17-decahydro-7H-20-oxa-cyclopropa[16,17]cyclopenta[a]phenanthrene 在
lithium aluminium tetrahydride 、
三氯化铝 作用下,
以
四氢呋喃 为溶剂,
生成 (8R,9S,13S,14S,17S)-17-((E)-3,3-Dimethyl-but-1-enyl)-3-methoxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-ol