| 摘要 |
Compound of formula (I): <IMAGE> in which: R1 represents a hydroxyl group, a linear or branched (C1-C6) alkoxy group or an amino group (substituted or otherwise), R2 represents a substituted or unsubstituted, linear or branched (C1-C6) alkyl group or a (C3-C7) cycloalkyl group, X1 represents -NH-, -O- or -S-, X2 represents -O-, -S- or -NH-, R3 represents a hydrogen atom, a linear or branched (C1-C6) alkyl or a phenyl, R4 represents - a linear or branched (C1-C6) alkyl group still substituted by one or more of the following groups, which are identical or different, hydroxyl, benzyloxy, benzyloxycarbonylamino, amino, linear or branched (C1-C6) mono- or dialkylamino, or acetoxy, - a substituted or unsubstituted (C3-C7) cycloalkyl group, or alternatively <IMAGE> represents the following heterocycle: <IMAGE> in which: n is equal to 0 or 1, R5 represents a hydroxyl or hydroxymethyl group, their enantiomers, their diastereomers and epimers as well as their addition salts with a pharmaceutically acceptable acid or base. Medicinal products.
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