7-Chloro-6-nitro-1-(3-nitro-phenyl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid ethyl ester

1-Methyl-6-nitro-3-(4-pyridin-2-yl-piperazine-1-carbonyl)-7-(4-pyridin-2-yl-piperazin-1-yl)-1H-quinolin-4-one

1-Cyclopropyl-7-(4-hydroxy-piperidin-1-yl)-6-nitro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid ethyl ester

ethyl 6-amino-1-methyl-4-oxo-7-[4-(2-pyridinyl)-1-piperazinyl]-1,4-dihydro-3-quinolinecarboxylate

6-Amino-7-(2-amino-ethylsulfanyl)-1-cyclopropyl-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid ethyl ester