N-[4-[{4-[3-({[(1,3-diaminopropan-2-yl)oxy]acetyl}amino)propoxy]phenyl}[4-(dimethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-methyl-methanaminium chloride 、
N-(3-(tert-butoxycarbonylamino)-2-(ethoxycarbonylmethyloxy)prop-1-yl)carbamic acid 在
O-(N-succinimidyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 1.0h,
以81%的产率得到N-(4-{(4-{[14-{[(tert-butoxycarbonyl)amino]methyl}-8-(6-{[(tert-butoxycarbonyl)amino]methyl}-11,11-dimethyl-3,9-dioxo-5,10-dioxa-2,8-diazadodec-1-yl)-19,19-dimethyl-5,11,17-trioxo-7,13,18-trioxa-4,10,16-triazaicos-1-yl]oxy}phenyl)[4-(dimethylamino)phenyl]methylene}cyclohexa-2,5-dien-1-ylidene)-N-methylmethanaminium chloride