PYRIDONE CARBOXYLIC ACID DERIVATIVES AND COMPOSITION BASED ON THEREOF Russian patent published in 1997 - IPC

FIELD: organic chemistry. SUBSTANCE: product: 1-(1,2-cis-2-fluorocyclopropyl)-substituted quinolone derivative of the formula (I) $$$ consisting of a single stereoisomer where $$$ means methyl group, difluoromethyl group and others; $$$ means the saturated nitrogen-containing heterocyclic group; A means C-$$$ or nitrogen atom; each of $$$ and $$$ means halogen atom; $$$ and Z mean hydrogen atom and others. The synthesized compound shows antibacterial property. EFFECT: improved method of synthesis. 13 cl, 3 dwg, 2 tbl