(13S,17S)-2-methoxy-13-methyl-3-(trifluoromethylsulfonyloxy)-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl acetate 在
chromium(VI) oxide 、
溶剂黄146 作用下,
以
水 为溶剂,
反应 2.0h,
以78%的产率得到(13S,17S)-2-methoxy-13-methyl-6-oxo-3-(trifluoromethylsulfonyloxy)-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl acetate