| abstract |
The invention covers compounds of formula: (see formula I) in which R represents a chain (see formula A) or (see formula B) R1 is methyl or ethyl, R2 is either an optionally substituted aromatic either an optionally substituted heteroaromatic, R3 and R4, identical or are either an optionally substituted aromatic or a optionally substituted heteroaromatic, R 'represents an atom of hydrogen or a radical -CO-alk, their optical isomers, their salts, their preparation and the drugs containing them. These drugs are particularly useful for the treatment or prevention of disorders affecting the central nervous system, immune system, cardio system vascular or endocrine, respiratory system, apparatus gastrointestinal and reproductive disorders, as well as for the treatment or prevention of bacterial, viral and parasitic infections. |