4-((2-((4-cyanophenyl)amino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidine-4-yl)oxy)-3,5-dimethylbenzonitrile 、
di-Boc-DL-His-OH 在
O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成 tert-butyl 5-[3-[2-(4-cyanoanilino)-4-(4-cyano-2,6-dimethylphenoxy)-7,8-dihydro-5H-pyrido[4,3-d]pyrimidin-6-yl]-2-[(2-methylpropan-2-yl)oxycarbonylamino]-3-oxopropyl]imidazole-1-carboxylate