1-[4-(tert-butyloxycarbonylaminomethyl)benzylamino-carbonyl]piperazine 在
(5-carboxy-methyl-2,6-dioxoperhydro-1,5-diazocin-1-yl)acetic acid 、 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、
三乙胺 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 1.0h,
生成 1,5-bis-{2-[4-(4-tert-butyloxycarbonylaminomethylbenzylaminocarbonyl)piperazin-1-yl]-2-oxoethyl}-perhydro-1,5-diazocin-2,6-dione