苯甲胺,N-甲基-4-(3-吡咯烷基)- 、
5-氨基-1-环丙基-6,7,8-三氟-4-氧代-1,4-二氢-3-喹啉羧酸 以provided the title compound (0.71 g, 51%) as a yellow solid, mp 201°-205° C.的产率得到5-amino-1-cyclopropyl-6,8-difluoro-1,4-dihydro-7-[3-[4-[(methylamino)methyl]phenyl]-1-pyrrolidinyl]-4-oxo-3-quinolinecarboxylic acid