甲烷磺酸 、
7-[3-(benzylideneamino)methyl-4-(4'-difluoromethxoy-3'-methxoybenzyloxyimino)pyrrolidin-1-yl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid 以
乙醇 为溶剂,
以56%的产率得到7-[3-aminomethyl-4-(4'-difluoromethxoy-3'-methxoybenzyloxyimino)pyrrolidin-1-yl]-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid dimesylate