乙酸酐 、
Acetic acid (2R,13bS)-2,12-dimethoxy-11-oxo-2,6,8,9,11,12-hexahydro-1H-indolo[7a,1-a]isoquinolin-12-yl ester 以
吡啶 为溶剂,
反应 0.5h,
以10%的产率得到Acetic acid (2R,9R,13bS)-11-acetoxy-2,12-dimethoxy-2,6,8,9-tetrahydro-1H-indolo[7a,1-a]isoquinolin-9-yl ester