申请人:——
公开号:US20020025301A1
公开(公告)日:2002-02-28
Flavonoids of the formula
1
in which R is one of the radicals of the formula Ia or Ib
2
where
R
1
is hydrogen or C
1
- to C
4
-alkyl, hydroxyl, C
1
- to C
4
-alkoxy, phenyloxy or benzyloxy,
R
2
is hydrogen or C
1
- to C
4
-alkyl,
R
3
is hydrogen, C
1
- to C
4
-alkyl, C
1
- to C
4
-alkoxy or cyano,
R
4
is hydrogen, C
1
- to C
4
-alkyl or phenyl,
n is 0 or 1 and
Het is a pyridyl, furyl or methylpyrrolyl radical, with the proviso that when the radical R=Ia and n=0, at most 2 of the radicals R
1
to R
3
are hydrogen at the same time,
and their use in cosmetic and dermatological preparations.
公式中的黄酮类化合物
其中R是公式Ia或Ib的基团之一
其中
R
1
是氢或C
1
-至C
4
-烷基,羟基,C
1
-至C
4
-烷氧基,苯氧基或苄氧基,
R
2
是氢或C
1
-至C
4
-烷基,
R
3
是氢,C
1
-至C
4
-烷基,C
1
-至C
4
-烷氧基或氰基,
R
4
是氢,C
1
-至C
4
-烷基或苯基,
n为0或1,且
Het是吡啶基,呋喃基或甲基吡咯基基团,但当基团R=Ia且n=0时,最多有2个基团R
1
到R
3
同时为氢,
以及它们在化妆品和皮肤科制剂中的用途。