| abstract |
Claim 1: Compounds of formula (1) wherein R 1 represents a hydrogen atom, a cyano group, linear or branched C 1-6 alkoxycarbonyl, linear or branched C 1-6 alkylsulfonylaminoalkyl, a N-hydroxycarboximidamide group, or a heterocyclic group, its enantiomers and diastereoisomers, as well as its addition salts with a pharmaceutically acceptable acid or base, it being understood that the term heterocyclic group designates a monocyclic aromatic group of 5 links, which contains one to four heteroatoms, identical or different, chosen from nitrogen, oxygen and sulfur, said heterocyclic group may be optionally substituted with one or more substituents, identical or different, chosen from linear or branched C1-6 alkyl or linear or branched C1-6 polyhaloalkyl. |