(3S,8R,9S,10R,13S,14S,17R)-3-(tert-Butyl-dimethyl-silanyloxy)-17-hydroxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-17-carbonitrile 在
咪唑 、
二异丁基氢化铝 、
溶剂黄146 作用下,
以
二氯甲烷 为溶剂,
反应 0.25h,
生成
(3S,8R,9S,10R,13S,14S,17R)-3-[tert-butyl(dimethyl)silyl]oxy-10,13-dimethyl-17-trimethylsilyloxy-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-17-carbaldehyde