| abstract |
New chlnolone and naphthyridone carboxylic acid derivatives of formula (I) R1 are described as straight-chain or branched C is substituted with C1-C3 alkyl or halogen, C2-C4 alkenyl, in addition to C1-C3 alkoxy, amino, monoalkylamino having 1 to 3 C atoms, dialkylamino having 1 to 3 C atoms per alkyl group or for phenyl optionally substituted one or up to three times with halogen, R 2 represents hydrogen, alkyl of 1 to 4 carbon atoms optionally substituted by hydroxy, methoxy, amino, methylamino or dimethylamino, or (5- methyl-2 -oxo-1,3-dioxol-4-yl) -methyl, X1 represents hydrogen, halogen, amino, methyl or trifluoromethyl, Z represents a residue of structure R5, N -BA stands for N or C-R9. N- A process for their preparation as well as their use as an antibacterial agent and precursor is also described. |