4-(aminocarbonylaminomethyl)-benzenemethanamine 、
(R)-N5-[amino(nitroimino)methyl]-N2-[(2-naphthyl)carbonyl]-ornithine 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 作用下,
以30%的产率得到(R)-N-[[4-(aminocarbonylaminomethyl)phenyl]methyl]-N5-[amino(nitroimino)methyl]-N2-[(2-naphthyl)carbonyl]-ornithinamide