| abstract |
PROBLEM TO BE SOLVED: To provide a preparation used as an antioxidant and / or a radical scavenger in a cosmetic or dermatological preparation. SOLUTION: General formula I Wherein R 1 is hydrogen, C 1 -C 12 acyl, R 2 is hydrogen, C 1 -C 12 alkyl, and R 3 and R 4 are C 1 -C 12 An 12 alkyl, R 5 and R 6 is hydrogen, C 1 -C 1 2 alkyl, X is -CH 2 -, - a ring condensed benzene derivative of a] - (CH 2) 2. |