p. 2374 - 2377
(2001)3,4-difluoronitrobenzene
6,7-difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid ethyl ester
6-fluoro-(2-fluoro-4-nitrophenyl)-1,4-dihydro-4-oxo-7-(piperazin-1-yl)oxoquinoline-3-carboxamide
1-(4-amino-2-fluorophenyl)-6-fluoro-7-{4-[2-(4-methoxy-phenyl)-2-oxoethyl]-1-piperazinyl}-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
1-(4-nitro-2-fluorophenyl)-6-fluoro-7-{4-[2-(4-methoxyphenyl)-2-oxoethyl]-1-piperazinyl}-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
6-fluoro-(2-fluoro-4-nitrophenyl)-1,4-dihydro-4-oxo-7-(piperazin-1-yl)oxoquinoline-3-carboxylic acid
ethyl 6-fluoro-1-(2-fluoro-4-nitrophenyl)-1,4-dihydro-4-oxo-7-(piperazin-1-yl)quinoline-3-carboxylate