The invention relates to compounds having general formula (I): where R = H, CH2-OH, CH2-O-CO-CH3, CH2-O-CO-Ph (Ph=phenyl) R' = H, CH2-O-CO-CH3, CH2-O-CO-Ph (Ph = phenyl) Ar = phenyl, 3-methoxy-4-hydroxy phenyl, 2-furyl. These are compounds having antioxidant activity against free radicals together with anti-inflammatory activity, the compounds being useful as active ingredients for the preparation of pharmaceutical dermatological or cosmetic compositions for skin care.