Novel 3-phenyl acrylic acid compound activators of type ppar receptors and pharmaceutical/cosmetic compositions comprised thereof

A 3-phenyl acrylic acid compound having the following general formula (I):

• in which:
• R1 is a hydroxyl radical or an alkoxy radical;
• R2 is an alkyl radical, an alkoxy radical, or an aralkoxy radical;
• R3 is a hydrogen atom, an alkyl radical, an optionally substituted aralkyl radical or a polyether radical;
• R4 is a hydrogen, a halogen, an alkyl radical or an alkoxy radical;
• R5 is an alkyl radical, an optionally substituted aryl radical or an optionally substituted aralkyl radical;
• X is an oxygen atom or a CH2 radical;
• Y is an oxygen atom, an NR6 radical, a radical OSO2, OCO, NR6CO or NR6SO2,
• R6 is a hydrogen atom or an alkyl radical;
• and also the salts thereof with a pharmaceutically acceptable acid or base,
• and the pharmaceutically acceptable solvates and hydrates thereof.