| 摘要 |
Cosmetic composition containing, by way of a compound screening cut UV of wavelengths 280-380 nm, a 5-benzylidene-3-oxacyclopentanone of formula (I): <IMAGE> (I) where R1, R2, R3 and R4 denote C1-C8 alkyl, aralkyl or aryl, or alternatively R1 and R2 and/or R3 and R4 form, with the carbon to which they are attached, a saturated 5- or 6-membered ring, and R5, R6 and R7 denote H, C1 -C8 alkyl, C2-C8 alkenyl, C1-C12 alkoxy, C2-C8 alkenyloxy, C2-C12 acyloxy, benzyloxy or -COOR10 where R10 is a C1-C8 alkyl, hydrogen, an alkali metal or alkaline earth metal or a radical derived from an amine, it also being possible for one of the substituents R5, R6 and R7 to denote a radical <IMAGE> where R1, R2, R3 and R4 have the above meanings. This composition can be a protective composition for the human epidermis or the hair or an antisun composition. New compounds of formula (I) in which R1, R2, R3, R4, R5, R6 and R7, have the same meanings, R6 being other than hydrogen, methyl and methoxy.
|
