4-[[(2S)-5-(carbamoylamino)-2-[[(2S)-5-(carbamoylamino)-2-[2-(9H-fluoren-9-ylmethoxycarbonylamino)ethylamino]pentanoyl]amino]pentanoyl]amino]benzoic acid 、 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium 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 2.0h,
以89%的产率得到[(1S)-3-[5-[[4-[[(2S)-5-(carbamoylamino)-2-[[(2S)-5-(carbamoylamino)-2-[2-(9H-fluoren-9-ylmethoxycarbonylamino)ethylamino]pentanoyl]amino]pentanoyl]amino]benzoyl]amino]-1H-indole-2-carbonyl]-1-(chloromethyl)-1,2-dihydrobenzo[e]indol-5-yl] 4-methylpiperazine-1-carboxylate