| abstract |
A compound of formula (I) in which R, R, R and R, which may be the same or different, each represents a hydrogen atom, a halogen atom or a group selected from alkyl, alkoxy, polyhaloalkyl, hydroxy, cyano, nitro and amino, or R R, R and R, or R and R, together with the carbon atoms carrying them, form an optionally substituted benzene ring or an optionally substituted heteroaromatic ring, X represents an oxygen atom or a methylene group, A represents a linear or branched (C — C) alkylene chain represent are an unsaturated nitrogen-containing heterocycle, and R is an alkyl group, its enantiomers and diastereoisomers, as well as its addition salts with a pharmaceutically acceptable acid or base, Drugs. |