(E)-(R)-6-[(3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-10,13-Dimethyl-3,7,12-tris-(tetrahydro-pyran-2-yloxy)-hexadecahydro-cyclopenta[a]phenanthren-17-yl]-2-methyl-hept-2-enoic acid ethyl ester 在
盐酸 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
反应 1.0h,
生成
(E)-(R)-2-Methyl-6-((3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-3,7,12-trihydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-hept-2-enoic acid ethyl ester