| abstract |
The subject of the invention is the products of formula in which R₁ = Organic radical C₁₋₁₈ R₂ = CH₃ or C₂H₅ A and B Re = H, Alk C₁₋₆ or acyl R₃ or R₄ represent one optionally protected or acylated or alkoxy OH and the other optionally substituted aryl, R₅: optionally substituted aryl, their preparation process and intermediates, their application as medicaments and the pharmaceutical compositions containing them. |