4-哌啶基哌啶 、
4-(2-oxo-1,2-dihydro-imidazo[4,5-c]quinolin-3-yl)-piperidin-1-carboxylic acid-(R)-2-(4-amino-3-chloro-5-trifluoromethyl-phenyl)-1-carboxy-ethylester 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
三乙胺 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
以76%的产率得到4-(2-oxo-1,2-dihydro-imidazo[4,5-c]quinolin-3-yl)-piperidin-1-carboxylic acid-(R)-1-(4-amino-3-chloro-5-trifluoromethyl-benzyl)-2-[1,4']bipiperidinyl-1'-yl-2-oxo-ethylester