The present invention relates to compounds comprising the general formula (I),in whichR1 and R2, which may be identical or different, are selected from the groupcomprising ¨Hor a linear or branched alkyl group having from 1 to 6 carbon atoms ortogether form anaromatic or aliphatic ring with 5 or 6 atoms； Y and Z, which may be identicalor different,are selected from the group comprising ¨H, ¨OH, ¨COOH, ¨OR3, ¨CH(OR3)COOH, inwhich R3 is selected from H, phenyl, benzyl, ¨CF3 or ¨CF2CF3, vinyl, allyl anda linear orbranched alkyl group having from 1 to 6 carbon atoms, and the use thereof fortheprevention and/or treatment of tumours expressing PPAR.gamma. receptors andEGF receptorsor the treatment of chronic inflammatory diseases.
