The invention relates to a compound of formula (I), or a pharmacologically or cosmetically acceptable salt or derivative thereof, wherein R.sub.1 to R.sub.5 are selected from the groups R.sub.1 representing -alkyl, -vinyl, --CHOH--CH.sub.2OH, R.sub.2 representing H, --OH, --Oalkyl, --Oacyl, saccharide groups, modified saccharide groups (e.g. malonylated), R.sub.3 representing --H, --OH, --Oalkyl, --Oacyl, modified --Oacyl (e.g. malonylated), saccharide groups, modified saccharide groups (e.g. malonylated), R.sub.4, R.sub.5 representing --COOH, -carbonic esters, for use as drug, antioxidant, food supplement. The invention also relates to a method for producing the compound of formula (I).