1-(4-chloro-benzyl)-6,7-difluoro-4-oxo-1,4-dihydro-quinoline-3-carbonitrile 、
4-羟基哌啶 以gave 1-(4-chloro-benzyl)-6-fluoro-7-(4-hydroxy-piperidin-1-yl)-4-oxo-1,4-dihydro-quinoline-3-carbonitrile的产率得到1-(4-chloro-benzyl)-6-fluoro-7-(4-hydroxy-piperidin-1-yl)-4-oxo-1,4-dihydro-quinoline-3-carbonitrile