4-(((benzyloxy)carbonyl)oxy)-3,5-dimethoxybenzoic acid 、
(3beta,16beta,17alpha,18beta,20alpha)-18-羟基-11,17-二甲氧基育亨宾-16-羧酸甲酯 以
二氯甲烷 为溶剂,
反应 3.0h,
以108 mg的产率得到methyl (1R,15S,17R,18R,19S,20S)-17-[(4-{[(benzyloxy)carbonyl]oxy}-3,5-dimethoxyphenyl)carbonyloxy]-6,18-dimethoxy-3,13-diazapentacyclo[11.8.0.0
2,10.0
4,9.0
15,20]henicosa-2(10),4,6,8-tetraene-19-carboxylate