17-[Tert-butyl(dimethyl)silyl]oxy-10,13-dimethyl-1,2,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-one 在
4-甲氧基吡啶-N-氧化物 、
2-碘酰基苯甲酸 作用下,
以
二甲基亚砜 为溶剂,
反应 40.0h,
以81%的产率得到(10R,13S,17S)-17-(tert-Butyl-dimethyl-silanyloxy)-10,13-dimethyl-4,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-cyclopenta[a]phenanthren-3-one