(8R,9S,10S,13S,14S)-10,13-dimethyl-3,17-dioxospiro[7,8,9,11,12,14,15,16-octahydrocyclopenta[a]phenanthrene-4,1'-cyclopentane]-2-carbonitrile 在
aluminum isopropoxide 作用下,
以
异丙醇 、
甲苯 为溶剂,
反应 20.0h,
以20%的产率得到(8R,9S,10S,13S,14S,17S)-17-hydroxy-10,13-dimethyl-3-oxospiro[8,9,11,12,14,15,16,17-octahydro-7H-cyclopenta[a]phenanthrene-4,1'-cyclopentane]-2-carbonitrile