ethyl 1-cyclopropyl-6-fluoro-1,4-dihydro-7-<2-(acetoxymethyl)-6-methyl-4-pyridinyl>-4-oxo-3-quinolinecarboxylate

1-Cyclopropyl-6-fluoro-7-(2-methyl-6-methylaminomethyl-pyridin-4-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid ethyl ester

1-Cyclopropyl-7-(2-dimethylaminomethyl-6-methyl-pyridin-4-yl)-6-fluoro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid ethyl ester

1-Cyclopropyl-7-(2-ethylaminomethyl-6-methyl-pyridin-4-yl)-6-fluoro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid ethyl ester