6-Fluoro-1-(2-fluoro-1,1-bis-fluoromethyl-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-bis(fluoromethyl)ethyl]-4-oxo-7-piperazin-1-yl-1,8-naphthyridine-3-carboxylic acid