Ethyl 4-chloro-6-fluoro-8-methoxyquinoline-3-carboxylate 、
4-fluoro-butylamine 以to afford 6-fluoro-4-(4-fluoro-butylamino)-8-methoxy-quinoline-3-carboxylic acid ethyl ester (175 mg)的产率得到6-fluoro-4-(4-fluoro-butylamino)-8-methoxy-quinoline-3-carboxylic acid ethyl ester