Acetic acid (R)-1,1,2-trimethyl-5-((3S,5R,6R,8S,9S,10R,12R,13R,14S,17R)-3,5,6,12-tetrahydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-hexyl ester 在
N,O-双三甲硅基乙酰胺 作用下,
以
吡啶 为溶剂,
生成
(3S,5R,6R,8S,9S,10R,12R,13R,14S,17R)-10,13-Dimethyl-17-((R)-1,4,5-trimethyl-hex-5-enyl)-hexadecahydro-cyclopenta[a]phenanthrene-3,5,6,12-tetraol