Patent ID: 6903134

Claim:
A cosmetic or pharmaceutical formulation comprising at least one compound of formula I in which X is a single bond, —CH 2 —, —C(O)—, —C(NR 5 )—, —CH(NR 5 R 6 )—or —CH(OR 5 )—, and R 1 , R 2 , R 3 , R 4 , R 5 and R 6 , which may be identical or different, are, independently of one another, selected from H straight-chain or branched C 1 - to C 12 -alkyl and/or alkylcarbonyl groups, straight-chain or branched C 3 - to C 12 -alkenyl and/or -alkenylcarbonyl groups, straight-chain or branched C 1 - to C 12 -hydroxyalkyl groups, in which the hydroxyl group may be bonded to a primary or secondary carbon atom of the chain, and furthermore the alkyl chain may also be interrupted by oxygen, C 3 - to C 10 -cycloalkyl and/or cycloalkylcarbonyl groups and C 3 - to C 12 -cycloalkenyl and/or cycloalkenylcarbonyl groups, in which each of the rings may also be bridged by —(CH 2 ) n — groups, where n is 1 to 3, aryl and/or arylcarbonyl groups, heteroaryl and/or heteroarylcarbonyl groups, where these groups may be substituted by alkyl, hydroxyl, alkoxy, amino, mono- and dialkylamino, sulfonic acid, carboxyl and/or halogen groups, mono- and/or oligoglycosyl radicals, and radicals selected from in which Me is a proton or an alkali metal ion.