5-Benzylidene 3-oxa cyclopentanone derivatives, process for their manufacture and their use in cosmetic compositions to protect the skin and the hair against sun radiation

摘要

cosmetic composition containing as a compound filtering wavelength uv 280-380 nm, 5 - substituted 3 - oxa cyclopentanone formula.(i)where ru2081, ru2082, ru2083 and ru2084 are alkyl, aryl cu2081 - cu2088, aralkyle, or ru2081 and ru2082 and / or ru2083 and ru2084, together with the carbon atom to which they are attached, a five or six membered ring saturated.ru2085, ru2086 and ru2087 represent h, alkyl, alkenyl cu2081 - cu2088, in cu2082 - cu2088, alkoxy, in cu2081 - cu2081u2082, alcu00e9nyloxy in cu2082 - cu2088 in cu2082 - cu2081u2082, acyloxy, benzyloxy or c00ru2081u2080 where ru2081u2080 is a cu2081 - cu2088 alkyl, hydrogen, an alkali or an alkaline earth metal, or a radical. derivative of. this is one of the ru2085 ru2086 substituents, and ru2087 may also represent a radicalwhere ru2081, ru2082, ru2083 and ru2084 have the meanings described above. the composition may be a composition protects human skin or hair and sun block.;novel compounds of formula (i), in which ru2081, ru2082, ru2083, ru2084, ru2085, ru2086 and ru2087 have the same meanings are different, ru2086 hydrogen, methyl or methoxy.