| abstract |
An antibacterial compoundwhereinrepresents benzene ring, pyridine ring, pyrazine ring or 5-membered aromatic neterocycle (having one oxygen or sulfur atom as ring-constituting atom), there being no R4 where represents 5-membered aromatic heterocycle;X and Y respectively represent hydrogen atom or CXY represents C=N-OR5 wherein R5 represents hydrogen atom, halo C1-C6 alkyl or C3-C7 cycloalkyl;R1 represents phenyl, furyl, thienyl, thiazolyl (which may be substituted by amino group), tetrazolyl or thiadiazolyl,R2, R3 and R4 respectively represent hydrogen atom, halogen, hydroxyl group, nitro, C1-C6 alkoxy, trifluoromethyl, isothiuronium C1-C6 alkyl, amino C1-C6 alkyl, halo C1-C6 alkyl, morpholino, piperidino or piperazinyl. |