Acetic acid (5R,8R,9S,10S,13R,14R)-14-hydroxy-10,13-dimethyl-17-(7-oxa-1,5-dithia-spiro[5.5]undec-8-en-9-yl)-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester 在
lithium hydroxide 作用下,
以
四氢呋喃 、
水 为溶剂,
反应 2.0h,
以97%的产率得到(5R,8R,9S,10S,13R,14R)-10,13-Dimethyl-17-(7-oxa-1,5-dithia-spiro[5.5]undec-8-en-9-yl)-hexadecahydro-cyclopenta[a]phenanthrene-3,14-diol