| abstract |
The present invention relates to compounds that respond to formula (I) wherein: R 1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R 2 represents a hydroxyl group, a thiol group, an alkyloxy group of 1 to 4 carbon atoms or a thioalkyl group of 1 to 4 carbon atoms, and n is an integer equal to 1 or 2, in the base or salt state of addition to an acid as well as in the state of hydrate or solvate The present invention also intends its preparation process and its use in therapeutics. |