(1R,5R,6R,8S,9S,10S,13R,14S,17R)-5-hydroxy-10,13-dimethyl-17-((R)-6-methylheptan-2-yl)-1-((2-(trimethylsilyl)ethoxy)methoxy)hexadecahydrospiro[cyclopenta[a]phenanthrene-3,2'-oxiran]-6-yl acetate 在
三氟化硼乙醚 作用下,
以
四氢呋喃 为溶剂,
反应 0.25h,
生成 Acetic acid (1R,3R,5R,6R,8S,9S,10S,13R,14S,17R)-17-((R)-1,5-dimethyl-hexyl)-3-formyl-5-hydroxy-10,13-dimethyl-1-(2-trimethylsilanyl-ethoxymethoxy)-hexadecahydro-cyclopenta[a]phenanthren-6-yl ester 、 Acetic acid (1R,3S,5R,6R,8S,9S,10S,13R,14S,17R)-17-((R)-1,5-dimethyl-hexyl)-3-formyl-5-hydroxy-10,13-dimethyl-1-(2-trimethylsilanyl-ethoxymethoxy)-hexadecahydro-cyclopenta[a]phenanthren-6-yl ester