Described are merocyanine derivatives of formula
wherein
R
2
is hydrogen; C
1
-C
22
alkyl; cyclo-C
3
-C
8
alkyl; unsubstituted or C
1
-C
6
alkyl- or C
1
-C
6
alkoxy-substituted C
6
-C
20
aryl; a cyano group; or R
1
and R
2
together with the nitrogen atom linking them form a —(CH
2
)
m
— ring which is optionally interrupted by —O— or by —NR
7
—;
R
4
is a cyano group; or -Q
1
-R
5
;
Q
1
is —COO—; —CONH—; —CO—; —SO
2
—; or —CONR
6
—;
R
5
is C
1
-C
22
alkyl; cyclo-C
3
-C
8
alkyl; or unsubstituted or C
1
-C
6
alkyl-substituted C
6
-C
20
aryl;
R
6
is hydrogen; C
1
-C
22
alkyl; cyclo-C
3
-C
8
alkyl; unsubstituted or C
1
-C
6
alkyl- or C
1
-C
6
alkoxy-substituted C
6
-C
20
aryl;
R
7
is hydrogen; C
1
-C
22
alkyl; cyclo-C
3
-C
8
alkyl; unsubstituted or C
1
-C
6
alkyl- or C
1
-C
6
alkoxy-substituted C
6
-C
20
aryl;
the cyclohexene radical C is not substituted or substituted by one or more C
1
-C
5
alkyl;
m is from 3 to 7;
n is from 2 to 4; and
o is from 2 to 4.
Said merocyanine derivatives are useful in protecting human and animal hair and skin from UV radiation and to cosmetic compositions comprising said derivatives.
US7893292B2
申请人:——
公开号:US7893292B2
公开(公告)日:2011-02-22
[EN] MEROCYANINE DERIVATIVES FOR COSMETIC USE<br/>[FR] DERIVES DE LA MEROCYANINE A USAGE COSMETIQUE
申请人:CIBA SC HOLDING AG
公开号:WO2005058269A1
公开(公告)日:2005-06-30
Described are merocyanine derivatives of formula (1a) or (1b) wherein n and o are integers from 2 to 4 and aminocyclohexenone intermediates. They are used in protecting human and animal hair and skin from UV radiation.