6-Fluoro-1-(2-fluoro-1,1-dimethyl-ethyl)-4-oxo-7-piperazin-1-yl-1,4-dihydro-[1,8]naphthyridine-3-carboxylic acid ethyl ester 、
甲醇 、
sodium methylate 生成
6-Fluoro-1-(2-fluoro-1,1-dimethyl-ethyl)-4-oxo-7-piperazin-1-yl-1,8-naphthyridine-3-carboxylic acid