[9-(Benzylamino-methyl)-6,10-dioxo-1,4,7,8,9,10-hexahydro-6H-pyridazino[1,2-a][1,2]diazepin-1-yl]-acetic acid 、
methyl (2S)-2-[[(2S,3S)-2-[[(3S,4S)-4-(tert-butoxycarbonylamino)-3-hydroxy-5-phenyl-pentanoyl]amino]-3-methyl-pentanoyl]amino]-3-phenyl-propanoate 在
1-羟基苯并三唑 、
1-(3-二甲基氨基丙基)-3-乙基碳二亚胺 、
三氟乙酸 作用下,
生成 methyl (2S)-2-[[(2S,3S)-2-[[(3S,4S)-4-[[2-[7-[(benzylamino)methyl]-6,10-dioxo-4,7,8,9-tetrahydro-1H-pyridazino[1,2-a]diazepin-4-yl]acetyl]amino]-3-hydroxy-5-phenylpentanoyl]amino]-3-methylpentanoyl]amino]-3-phenylpropanoate