tert-butyl (2R)-2-methyl-4-oxopyrrolidine-1-carboxylate
7-((2S,4S)-4-Acetylamino-2-methyl-pyrrolidin-1-yl)-1-(2,4-difluoro-phenyl)-6-fluoro-4-oxo-1,4-dihydro-[1,8]naphthyridine-3-carboxylic acid ethyl ester
(2'S,4'S)-7-(4'-acetamido-2'-methylpyrrolidinyl)-1-(2,4-difluorophenyl)-1,4-dihydro-6-fluoro-4-oxoquinoline-3-carboxylic acid ethyl ester
(2'S,4'S)-7-(4'-amino-2'-methylpyrrolidinyl)-1-(2,4-difluorophenyl)-1,4-dihydro-6-fluoro-4-oxo-1,8-naphthyridine-3-carboxylic acid
(2'S,4'S)-7-(4'-amino-2'-methylpyrrolidinyl)-1,4-dihydro-6-fluoro-1-(p-fluorophenyl)-4-oxo-1,8-naphthyridine-3-carboxylic acid hydrochloride