ethyl 7-(3-amino-1-pyrrolidinyl)-6-fluoro-1,4-dihydro-4-oxo-1-(2-thiazolyl)methyl-1,8-naphthyridine-3-carboxylate 在
10percent aq. HCl 作用下,
以
乙醇 为溶剂,
反应 1.0h,
以60%的产率得到7-(3-Amino-pyrrolidin-1-yl)-6-fluoro-4-oxo-1-thiazol-2-ylmethyl-1,4-dihydro-[1,8]naphthyridine-3-carboxylic acid; hydrochloride