(4S,5R)-4-(2-allyloxyphenyl)-3-benzoyl-2-(4-methoxyphenyl)oxazolidine-5-carboxylic acid 、
(2S,10S,10aR)-10-benzoyloxy-2-hydroxy-9-pent-4-enoyloxymethyl-1,2,3,5,10,10a-hexahydropyrrolo[1,2-b]isoquinolin-5-one 在
4-二甲氨基吡啶 、
盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下,
以
二氯甲烷 为溶剂,
以96%的产率得到(2S,10S,10aR)-10-benzoyloxy-5-oxo-9-pent-4-enoyloxymethyl-1,2,3,5,10,10a-hexahydropyrrolo[1,2-b]isoquinolin-2-yl (4'S,5'R)-4'-(2-allyloxyphenyl)-3'-benzoyl-2'-(4-methoxyphenyl)oxazolidine-5-carboxylate