7-(3-Acetoxy-4-acetylamino-pyrrolidin-1-yl)-1-ethyl-6-fluoro-4-oxo-1,4-dihydro-[1,8]naphthyridine-3-carboxylic acid ethyl ester 在
盐酸 作用下,
以96%的产率得到7-(3-Amino-4-hydroxy-pyrrolidin-1-yl)-1-ethyl-6-fluoro-4-oxo-1,4-dihydro-[1,8]naphthyridine-3-carboxylic acid; hydrochloride