| abstract |
Compounds of formula (i); wherein: x represents an optionally substituted heterocyclic group; r1 represents a hydrogen atom, a halogen atom, a (C1-C6) alkoxy group, a (C1-C6) alkyl, amino or nrarb group; r 2 represents a heterocyclic group or an optionally substituted heteroaromatic group; R3 represents a hydrogen atom, a (C1-C6) alkyl group, a (C1-C6) alkoxy group or a halogen atom; R4 represents a hydrogen atom, a (C1-C4) alkyl group, a (C1-C4) alkoxy group or a fluorine atom, in the form of a base or an addition salt with an acid. Use in therapy. |