4-oxo-4-<4-(1,3-dihydro-2H-benzimidazol-2-one-1-yl)piperidin-1-yl>butanoic acid 、
3,4-diphenylmethylenedioxyphenyl-2-methyl-L-alanine methyl ester hydrochloride 在
氯甲酸乙酯 、
三乙胺 作用下,
以
氯仿 为溶剂,
反应 15.0h,
以42.6%的产率得到N-<1,4-dioxo-4-<4-(1,3-dihydro-2H-benzimidazol-2-one-1-yl)piperidin-1-yl>-butan-1-yl>-3,4-diphenylmethylenedioxyphenyl-2-methyl-L-alanine methyl ester