SKIN LIGHTENING AGENTS COMPRISING COUMARIN DERIVED FROM RESORCINOL DERIVATIVES.

摘要

Cosmetic methods of skin lightening using coumarin derivatives of formula (I) as skin lightening agents alone or in combination with other skin benefit agents and together with a cosmetic vehicle: where each or both R1 and/or R2 represents hydrogen, linear or branched C1-C18 alkyl, alkenyl, cycloalkyl, cycloalkenyl, hydroxyalkyl, hydroxyalkenyl, acyl, cycloacyl, or alkoxy groups; each or both R3 and/or R4, which may be connected by a single or double carbon-carbon bond (shown as a dotted line), represents hydrogen, linear or branched C1-C18 alkyl, alkenyl, alkoxy, cycloalkyl, or cycloalkenyl group; andeach or both R5 and/or R6 represents a hydrogen atom, OH, C1-C4 acyl group, C1-C4 alkyl group, O-CO-R7, O-COO-R8 group, mesyl group or tosyl group, where each or both R7 and/or R8 represents hydrogen, linear or branched C1-C18 alkyl, alkenyl, hydroxyalkyl, hydroxyalkenyl, acyl, cycloacyl, or alkoxy groups.