(R)-2-(4-hydroxy-3,5-dimethyl-phenyl)-1-carboxy-ethyl 4-(2-oxo-1,2,4,5-tetrahydro-1,3-benzodiazepin-3-yl)-piperidine-1-carboxylate 、
1-(4-methyl-tetrahydropyran-4-yl)-piperazine hydrochloride 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
三乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 20.0h,
以44%的产率得到4-(2-oxo-1,2,4,5-tetrahydro-benzo[d][1,3]diazepin-3-yl)-piperidine-1-carboxylic acid (R)-1-(4-hydroxy-3,5-dimethyl-benzyl)-2-oxo-2-[4-(4-methyl-tetrahydro-pyran-4-yl)-piperazin-1-yl]-ethyl ester