{(2S,3R,6S,8R,9S,10S)-8-[(1S,4S)-4-(3-Benzyloxy-phenyl)-4-methoxy-1-methyl-butyl]-10-hydroxy-3,5,5,9-tetramethyl-1,7-dioxa-spiro[5.5]undec-2-yl}-acetic acid methyl ester 在
sodium hydroxide 、
对甲苯磺酸 作用下,
以
四氢呋喃 、
氯仿 为溶剂,
反应 0.5h,
生成
{(2S,3R,6R,8R,9S,10S)-8-[(1S,4S)-4-(3-Benzyloxy-phenyl)-4-methoxy-1-methyl-butyl]-10-hydroxy-3,5,5,9-tetramethyl-1,7-dioxa-spiro[5.5]undec-2-yl}-acetic acid