NOVEL PYRIDONE DERIVATIVE, ITS PREPARATION METHOD AND INTERMEDIATE, THEIR USE AS PHARMACEUTICAL AGENT AND COMPOSITION CONTAINING SAME

摘要

Compounds of the formula (I): in which: - either E and G form which represents: in which R represents hydrogen, alkyl, alkenyl or alkynyl, which is optionally substituted, free carboxyl, esterified carboxyl or carboxylic salt, acyl, alkoxy, hydroxy, amino, alkylamino, dialkylamino, acyloxy, cyano, carbamoyl or halogen -- Y represents carbocyclic aryls, heteromonocyclic aryls or condensed heterocyclic aryls which are optionally substituted, - or E represents -CO2R3, in which R3 represents hydrogen or alkyl and G represents -- A represents: - either a carbocyclic radical which is optionally substituted, - or where B represents: - hydrogen, - aryl or arylalkyl, or - cycloalkyl, which are optionally substituted, - alkyl, alkenyl, alkynyl or alkyloxy which are optionally substituted, -- R1 and R2 represent hydrogen, alkyl, alkenyl or alkynyl which are optionally substituted, or R1 and R2 form with the nitrogen atom a 5-, 6- or 7-membered heterocycle optionally containing another heteroatom and optionally substituted, their preparation and their use as medicines.