氯甲酸乙酯 、
N,N-(2R,13R)-2,13-dihydroxy-4,11-dioxa-3,12-dioxotetradecylene-1,14-diyl-bis(R)-tetrahydropapaverine 以
氯仿 为溶剂,
反应 17.0h,
以97%的产率得到3-[(R)-1-(3,4-Dimethoxy-benzyl)-6,7-dimethoxy-3,4-dihydro-1H-isoquinolin-2-yl]-2-ethoxycarbonyloxy-propionic acid 6-{3-[(R)-1-(3,4-dimethoxy-benzyl)-6,7-dimethoxy-3,4-dihydro-1H-isoquinolin-2-yl]-2-ethoxycarbonyloxy-propionyloxy}-hexyl ester