4-{2-[6-(3-amino-piopylamino)-pyrido [3,4-d] pyrimidin-4-ylamino]-phenoxy}-butyric acid 在
O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
生成 7H, 21H-6, 4-(nitrilometheno) pyrimido [5,4-m] [1, 6,10, 15] benzoxa-triazacycloheptadecin-12 (13H)-one, 8,9, 10,11, 14,15-hexahydro-