Benzoic acid (1S,2S,3S,4R,8S,9S,11R,12S)-8-(tert-butyl-dimethyl-silanyloxy)-1,11-dihydroxy-2-methanesulfonyloxy-9,15,15-trimethyl-5-methylene-10-oxo-tricyclo[10.2.1.04,9]pentadec-3-yl ester 在
氯化二乙基铝 作用下,
以
正己烷 、
二氯甲烷 为溶剂,
反应 1.58h,
以52%的产率得到Benzoic acid (1R,2S,3R,7S,8S,10R,11S)-7-(tert-butyl-dimethyl-silanyloxy)-10-hydroxy-8,15,15-trimethyl-4-methylene-9,14-dioxo-tricyclo[9.3.1.0
3,8]pentadec-2-yl ester