abstract |
The invention relates to cosmetic and/or pharmaceutical preparations containing esters of retinol and/or of 3,4-di-dehydro-retinol according to formulas (I) or (II) or (III) or (IV), in which: groups R1 to R5, independent of one another, represent -H, -OH, -OR', -NHCOR', -NO2, -SH, SR', -COOH, -CONHR', -COOR', -CN, -CF3; R' corresponds to a C1-C4 alkyl group or halogen atom, and; n is not equal to zero. The invention also relates to the production of esters of retinol and/or of 3,4-di-dehydro-retinol, preferably by enzymatic esterification. |