7-(3-t-butoxycarbonylamino-1-pyrrolidinyl)-1-(4-fluoro-2-thiazolyl)-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid ethyl ester 在
盐酸 作用下,
生成
7-(3-Amino-1-pyrrolidinyl)-1-(4-fluoro-2-thiazolyl)-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid hydrochloride