4-(3-benzoyloxy-1,3,5(10)-estratrien-17β-yloxycarbonyl)butyric acid 在
carbonate buffer pH=10.0 作用下,
以
甲醇 为溶剂,
反应 0.5h,
以57.1%的产率得到Pentanedioic acid mono-((8R,9S,13S,14S,17S)-3-hydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl) ester