(3-hydroxy-10,13-dimethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl) acetate 、
三氧化硫吡啶 以
氯仿 为溶剂,
反应 4.0h,
以93%的产率得到Acetic acid 10,13-dimethyl-3-sulfooxy-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl ester; compound with pyridine