4-(4-氯苯基)-4-羟基哌啶 、
1-tert-butyl-7-chloro-1-1,4-dihydro-8-methyl-6-nitro-4-oxoquinolone-3-carboxylic acid 在
potassium carbonate 作用下,
以
二甲基亚砜 为溶剂,
以85%的产率得到1-tert-butyl-7-(4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl)-1,4-dihydro-8-methyl-6-nitro-4-oxoquinoline-3-carboxylic acid