Derivatives of pyridone, their preparation process, the new intermediates obtained, their use as medicaments and the pharmaceutical compositions containing them

摘要

Products of formula (I): <IMAGE> (I) in which: R1, R2, R3 and R4 represent: -a hydrogen atom, a halogen atom, one of the following radicals: hydroxyl, mercapto, cyano, nitro, sulpho, formyl, benzoyl, acyl, carboxy, cycloalkyl, acyloxy, -an alkyl, alkenyl, alkynyl, alkyloxy or alkythio radical, -an alkyl, alkenyl, alkynyl, alkyloxy or alkylthio radical, -an aryl, arylalkyl, arylalkenyl, aryloxy or arylthio radical, -a radical: <IMAGE> <IMAGE> -a-(CH2)m1-S(O)m2-Z'-R'14 radical in which m1 represents an integer from 0 to 4, m2 represents an integer from 0 to 2, R5 represents a divalent alkylene radical, Y represents the -Y1-B-Y2 radical. These products have useful pharmacological properties, which justify their use as medicaments.