7-Chloro-6-fluoro-4-oxo-1-(4-phenyl-thiazol-2-yl)-1,4-dihydro-[1,8]naphthyridine-3-carboxylic acid ethyl ester 在
20percent aq. HCl 作用下,
以
乙腈 为溶剂,
生成 7-(3-Amino-pyrrolidin-1-yl)-6-fluoro-4-oxo-1-(4-phenyl-thiazol-2-yl)-1,4-dihydro-[1,8]naphthyridine-3-carboxylic acid; hydrochloride