| abstract |
Cosmetic composition containing, as UV filtering compound with wavelengths 280-380 nm, a 5-benzylidene 3-oxa cyclopentanone of formula: (I) where R₁, R₂, R₃ and R₄ denote C₁-C₈ alkyl, aralkyl, aryl or else R₁ and R₂ and / or R₃ and R₄ form, with the carbon atom to which they are attached, a saturated 5 or 6-membered ring, R₅, R₆ and R₇ represent H, C₁-C₈ alkyl, C₂-C₈ alkenyl, C₁-C₁₂ alkoxy, C₂-C₈ alkenyloxy, C₂-C₁₂ acyloxy, benzyloxy or -C00R₁₀ where R₁₀ is C₁- alkyl C₈, hydrogen, an alkali or alkaline earth metal or a radical derived from amine, one of the substituents R₅, R₆ and R₇ can also represent a radical where R₁, R₂, R₃ and R₄ have the above meanings. This composition may be a protective composition for the human epidermis or the hair or sunscreen.n n n New compounds of formula (I) where R₁, R₂, R₃, R₄, R₅, R₆ and R₇ have the same meanings, R₆ being different from hydrogen, methyl and methoxy. |