| abstract |
The present invention relates to compounds of formula (I): in which X represents N or CH; R<SUB>1 </SUB>represents a hydrogen or halogen atom or a CF<SUB>3 </SUB>group; R<SUB>2 </SUB>and R<SUB>3 </SUB>independently represent a hydrogen atom or a methyl group; n is 0 or 1; A represents an optionally substituted nitrogenous heterocycle; and to their N-oxides and to their salts or solvates, to the pharmaceutical compositions and the medicaments comprising them, and to a process for their preparation. |