(10R,13S,17S)-10,13-Dimethyl-3,17-bis-trimethylsilanyloxy-2,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene 在
三氟甲磺酸N-吡啶鎓 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以42%的产率得到(10R,13S,17S)-6-Fluoro-17-hydroxy-10,13-dimethyl-1,2,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-cyclopenta[a]phenanthren-3-one