4-[2-(4-dimethylamino-phenyl)vinyl]-1-(3-isothiocyanato-propyl)pyridium 、 2-(3-{5-[7-(5-amino-1-carboxy-pentylcarbamoyl)heptanoylamino]-1-carboxy-pentyl}ureido)pentanedioic acid trfluoroacetate 在
N,N-二异丙基乙胺 作用下,
以
二甲基亚砜 为溶剂,
反应 2.0h,
以47%的产率得到(2S)-2-[[(1S)-1-carboxy-5-[[8-[[1-carboxy-5-[3-[4-[(E)-2-[4-(dimethylamino)phenyl]ethenyl]pyridin-1-ium-1-yl]propylcarbamothioylamino]pentyl]amino]-8-oxooctanoyl]amino]pentyl]carbamoylamino]pentanedioic acid