5-thio-β-D-xylopryanoside derivatives, preparation, method, pharmaceutical compositions containing them and their therapeutic use

摘要

The present invention relates to novel compounds of formula (I): in which:R₁, R₂ and R₃, which are identical or different, are each independently: a (C₁-C₆)alkyl group,a pyridinyl group ora group —CH₂—NR₄R₅, in which R₄ and R₅ are each independently a hydrogen atom or a (C₁-C₄)alkyl group, or alternatively R₄ and R₅ form, with the nitrogen atom to which they are bonded, a pyrrolidinyl, piperidinyl, hexahydroazepinyl, morpholinyl or piperazinyl group,with the proviso that at least one of the substituents R₁, R₂ and R₃ is other than a (C₁-C₆)alkyl group,and their salts, solvates and hydrates, especially those which are pharmaceutically acceptable.;These compounds are useful particularly for the treatment of disorders of the venous circulation.