7-((R)-4-(tert-butoxycarbonyl)-3-methylpiperazin-1-yl)-6,8-difluoro-1-(3-fluorophenyl)-1,4-dihydro-4-oxoquinoline-3-carboxylic acid 在
盐酸 作用下,
以
乙醇 为溶剂,
反应 10.0h,
以87.2%的产率得到6,8-Difluoro-1-(3-fluoro-phenyl)-7-((R)-3-methyl-piperazin-1-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid; hydrochloride