Hexahydro-1-methyl-4-(4-piperidinyl)-1H-1 4-diazepine 、
(S)-2-(4-amino-3,5-bis-trifluoromethyl-benzyl)-4-oxo-4-[4-(2-oxo-1,2,4,5-tetrahydro-1,3-benzodiazepin-3-yl)-piperidin-1-yl]-butanoic acid 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
三乙胺 、
potassium carbonate 作用下,
以
DMF (N,N-dimethylformamide) 、
水 为溶剂,
以77%的产率得到(S)-2-(4-amino-3,5-bis-trifluoromethyl-benzyl)-1-[4-(4-methyl-perhydro-1,4-diazepin-1-yl)-piperidin-1-yl]-4-[4-(2-oxo-1,2,4,5-tetrahydro-1,3-benzodiazepin-3-yl)-piperidin-1-yl]-butane-1,4-dione