6β.17α-Dihydroxy-6α.7α-difluormethylen-pregnen-(4)-3.20-dion-diacetat 在
potassium carbonate 作用下,
以
甲醇 为溶剂,
生成 Acetic acid (1R,3aS,3bR,10aR,10bS,12aS)-1-acetyl-5-fluoro-10a,12a-dimethyl-6,8-dioxo-1,2,3,3a,3b,6,8,9,10,10a,10b,11,12,12a-tetradecahydro-benzo[3,4]cyclohepta[1,2-e]inden-1-yl ester