Acetic acid 17-hydroxymethyl-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester 、
三氧化硫吡啶 以
氯仿 为溶剂,
反应 4.5h,
以90%的产率得到Acetic acid 10,13-dimethyl-17-sulfooxymethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester; compound with pyridine