tert-butyl N-[(1S)-1-[[(5-acetamido-2-methoxybenzoyl)amino]carbamoyl]-5-aminopentyl]carbamate 、 4-[[6-[[2-(4-benzyloxycarbonylpiperazin-1-yl)acetyl]amino]-7-(4-hydroxy-4-oxo-butoxy)-2-naphthyl]oxy]butanoic acid 在
1-羟基苯并三唑 、 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、
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 48.0h,
以61%的产率得到benzyl 4-[2-[[3,6-bis[4-[[(5S)-6-[2-(5-acetamido-2-methoxybenzoyl)hydrazinyl]-5-[(2-methylpropan-2-yl)oxycarbonylamino]-6-oxohexyl]amino]-4-oxobutoxy]naphthalen-2-yl]amino]-2-oxoethyl]piperazine-1-carboxylate