甲醇 、
7-chloro-17-methoxy-18-(3,4,5-trimethoxy-benzoyloxy)-7H-yohimb-1-ene-16-carboxylic acid methyl ester 在
氢氧化钾 作用下,
反应 1.5h,
生成 、 (1S,2R,3R,4aR,8aS,13bR,14aS)-2,8a-Dimethoxy-3-(3,4,5-trimethoxy-benzoyloxy)-1,2,3,4,4a,5,7,8,8a,13b,14,14a-dodecahydro-indolo[2',3':3,4]pyrido[1,2-b]isoquinoline-1-carboxylic acid methyl ester