The invention relates to a compound of formula (I), or a pharmacologically or cosmetically acceptable salt or derivative thereof, wherein R1 to R5 are selected from the groups R1 representing -alkyl, -vinyl, &mdash；CHOH&mdash；CH2OH, R2 representing H, &mdash；OH, &mdash；Oalkyl, &mdash；Oacyl, saccharide groups, modified saccharide groups (e.g. malonylated), R3 representing &mdash；H, &mdash；OH, &mdash；Oalkyl, &mdash；Oacyl, modified &mdash；Oacyl (e.g. malonylated), saccharide groups, modified saccharide groups (e.g. malonylated), R4, R5 representing &mdash；COOH, -carbonic esters, for use as drug, antioxidant, food supplement. The invention also relates to a method for producing the compound of formula (I).
