7-(7-tert-butoxycarbonyl-5-methyl-2,7-diazabicyclo[3.3.0]oct-2-yl)-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid 在
盐酸 作用下,
以
甲醇 、
乙醇 为溶剂,
生成 1-cyclopropyl-6,8-difluoro-1,4-dihydro-7-(5-methyl-2,7-diazabicyclo[3.3.0]oct-2-yl)-4-oxo-3-quinolinecarboxylic acid hydrochloride