| abstract |
The subject of the invention is the compounds of formula (I): <IMAGE> in which R1 represents: - either an aryl radical, optionally substituted, - or a heterocyclic radical, - or an arylalkyl radical, and either R2 represents : - either an <IMAGE> radical in which Ar and Ar 'represent an optionally substituted aryl radical or a heterocyclic radical, - or else an <IMAGE> radical optionally substituted and R3 represents a hydrogen atom, ie R2 and R3 form together with the nitrogen atom, to which they are linked an optionally substituted 5, 6 or 7-membered ring, and R4 represents a hydrogen atom, an alkyl radical, an optionally substituted arylalkyl radical or an <IMAGE> radical their preparation process and intermediates, their application as medicaments and the compositions containing them. |