(S)-N-(2-(2-(2-(2-chloroacetamido)ethoxy)ethoxy)ethyl)-4-(2-hydroxy-2-methyl-3-(4-nitro-3-(trifluoromethyl)phenylamino)-3-oxopropoxy)benzamide 、
1,4,7,10-四氮杂环十二烷-1,4,7-三乙酸三叔丁酯 在
potassium hydrogencarbonate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以70%的产率得到(S)-tert-butyl-2,2',2"-(10-(1-(4-(2-hydroxy-2-methyl-3-(4-nitro-3-(trifluoromethyl)phenylamino)-3-oxopropoxy)phenyl)-1,12-dioxo-5,8-dioxa-2,11-diazatridecan-13-yl)-1,4,7,10-tetraazacyclododecane-1,4,7-triyl)triacetate