Patent ID: 8008339

Claim:
A preparation comprising: at least one compound of formula I or a pharmacologically, dermatologically or cosmetically acceptable salt thereof, wherein R 1 is -alkyl, -vinyl, or —CHOH—CH 2 OH; R 2 is —H, —OH, —O-alkyl, —O-acyl, saccharide radicals, or modified saccharide radicals; R 3 is —H, —OH, —O-alkyl, —O-acyl, modified —O-acyl, saccharide radicals, or modified saccharide radicals; R 4 is —COOH or a carboxylic acid ester; and R 5 is —COOH or a carboxylic acid ester; and at least one substance selected from the group consisting of an antioxidant and a vitamin.