C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 69/738 (2006.01) A61K 8/35 (2006.01) A61K 8/37 (2006.01) A61Q 17/04 (2006.01) C07C 49/255 (2006.01) C07C 49/796 (2006.01) C07C 69/734 (2006.01)
Patent
CA 2563987
The invention relates to a compound of formula (I) wherein R1-R3 independently represent hydrogen, C1-C8 alkyl or C1-C8 alkoxy; R4 represents COR, CO2R, or CONR2, wherein R represents C1-C8 alkyl or C3-C8 cycloalkyl; R5 represents H or C1-C8 alkyl; and R6 represents aryl, aryl substituted with up to three C1- C8 alkyls or C1-C8 alkoxys, or C3-C8 cycloalkyl. The invention especially relates to the use of said compound as a UV filter in cosmetic formulations, especially combined with UV filters from the group of methoxycinnamate derivatives and/or dibenzoylmethane derivatives, with the proviso that R5 represents H, when R4 represents COR.
L'invention concerne l'utilisation d'un composé représenté par la formule (I) dans laquelle R1-R3 sont indépendamment de l'hydrogène, C1-C8-alkyl ou C1-C8-alkoxy; R4 est COR, CO2R, CONR2, R étant C1-C8-alkyl ou C3-C8-cycloalkyl; R5 est H ou C1-C8-alkyl; et R6 est aryl, aryl substitué avec trois C1-C8-alkyl- ou C1-C8-alkoxy, ou C3-C8-cycloalkyl, en tant que filtres à UV dans des formulations cosmétiques, notamment en combinaison avec des filtres à UV du groupe des dérivés de méthoxycinnamate et/ou de dibenzoylméthane, à la condition que R5 est H lorsque R4 est COR.
Johncock William
Koch Oskar
Borden Ladner Gervais Llp
Symrise Gmbh & Co. Kg
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