acetic acid 2-acetoxy-1-{3-chlorocarbonyl-5-[(2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)carbamoyl]-2,4,6-triiodophenylcarbamoyl}-ethyl ester 、
二乙烯三胺 在
三乙胺 作用下,
以
N,N-二甲基乙酰胺 为溶剂,
以8.5%的产率得到[2-Acetyloxy-3-[3-[2-[[3-(2,3-diacetyloxypropanoylamino)-5-[(2,2-dimethyl-1,3-dioxolan-4-yl)methylcarbamoyl]-2,4,6-triiodobenzoyl]-[2-[[3-(2,3-diacetyloxypropanoylamino)-5-[(2,2-dimethyl-1,3-dioxolan-4-yl)methylcarbamoyl]-2,4,6-triiodobenzoyl]amino]ethyl]amino]ethylcarbamoyl]-5-[(2,2-dimethyl-1,3-dioxolan-4-yl)methylcarbamoyl]-2,4,6-triiodoanilino]-3-oxopropyl] acetate