Acetic acid (3S,8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-((E)-(S)-1-methyl-3-piperidin-1-yl-allyl)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester 在
吡啶 、 sodium tetrahydroborate 、
水 作用下,
以
四氢呋喃 、
乙醇 为溶剂,
反应 46.5h,
生成
Acetic acid (3S,8S,9S,10R,13R,14S,17R)-17-((1S,2R)-2-methanesulfonyloxymethyl-1-methyl-pent-4-enyl)-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