Acetic acid (10R,13S)-10,13-dimethyl-17-trimethylsilanyloxy-2,7,8,9,10,11,12,13,14,15-decahydro-1H-cyclopenta[a]phenanthren-3-yl ester 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54%的产率得到Acetic acid (10R,13S,16R)-16-fluoro-10,13-dimethyl-17-oxo-2,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl ester