{4-Amino-2-[bis-(5-amino-2-ethoxycarbonylmethoxy-phenyl)-methyl]-phenoxy}-acetic acid ethyl ester 、
对甲基苯磺酰异氰酸酯 以
二氯甲烷 为溶剂,
生成 Ethyl 2-[2-[bis[2-(2-ethoxy-2-oxoethoxy)-5-[(4-methylphenyl)sulfonylcarbamoylamino]phenyl]methyl]-4-[(4-methylphenyl)sulfonylcarbamoylamino]phenoxy]acetate