4-(6-bromonaphth-2-ylsulphonyl)-2-carboxy-1-[1-(4-pyridyl)piperidin-4-ylcarbonyl]piperazine 、
吗啉 以to give 4-(6-bromonaphth-2-ylsulphonyl)-2-morpholinocarbonyl-1-[1-(4-pyridyl)piperidin-4-ylcarbonyl]piperazine in 60% yield, m.p. 235-237° C.的产率得到4-(6-bromonaphth-2-ylsulphonyl)-2-morpholinocarbonyl-1-[1-(4-pyridyl)-piperidin-4-ylcarbonyl]piperazine