| abstract |
The invention relates to the 3,4-dihydroxybenzyl-substituted carbonic acid derivatives, their preparation, their use as antioxidants or free-radical scavengers, especially in cosmetic and pharmaceutical preparations for the protection of cells and tissues against the aging accelerating harmful effects of radicals and reactive oxygen compounds. The invention further relates to cosmetic and pharmaceutical preparations comprising these 3,4-dihydroxybenzyl-substituted carbonic acid derivatives. |