[(8S,9S,10R,13S,14S,17S)-17-(1-hydroxyethyl)-10,13-dimethylspiro[1,2,4,7,8,9,14,15,16,17-decahydrocyclopenta[a]phenanthrene-3,2'-1,3-dioxolane]-11-yl] acetate 在
sodium hydroxide 作用下,
以
甲醇 为溶剂,
反应 18.0h,
生成
3,3-ethylenedioxy-20(R)-hydroxypregn-5-en-11-one