(Z)-2-Methyl-but-2-enoic acid (E)-(1R,2R,3S,4S,10S)-2-hydroxy-3-((S)-2-hydroxy-1-methyl-ethyl)-6,10-dimethyl-11-oxa-bicyclo[8.1.0]undec-6-en-4-yl ester 在
manganese(IV) oxide 作用下,
以
二氯甲烷 为溶剂,
反应 6.0h,
以208 mg的产率得到(Z)-2-Methyl-but-2-enoic acid (E)-(1R,2R,4S,10S,11R,12S)-4,8,12-trimethyl-13-oxo-3,14-dioxa-tricyclo[9.3.0.0
2,4]tetradec-7-en-10-yl ester