申请人:——
公开号:US20020034527A1
公开(公告)日:2002-03-21
Use of ascorbic acid derivatives of the formula I
1
where the variables independently of one another have the following meanings:
R
1
is hydrogen, C
1
-C
20
-acyl, C
1
-C
12
-alkoxycarbonyl, C
1
-C
12
-alkyl,
R
2
is hydrogen, C
1
-C
20
-acyl, C
1
-C
12
-alkoxycarbonyl, C
1
-C
12
-alkyl,
where R
1
and R
2
, together with the oxygen atoms to which they are bonded and the carbon atoms bonded to the oxygen atoms, can form an unsubstituted or substituted heterocycle,
R
3
is hydrogen or a cation selected from the group consisting of NH
4
+
, alkali metal and alkaline earth metal cations,
R
4
is C
1
-C
12
-alkoxycarbonyl,
for cosmetic and pharmaceutical preparations is described.
使用式 I 的抗坏血酸衍生物
1
式中互不相关的变量具有如下含义:
R
1
是氢、C
1
-C
20
-酰基,C
1
-C
12
-烷氧羰基、C
1
-C
12
-烷基、
R
2
是氢、C
1
-C
20
-酰基,C
1
-C
12
-烷氧羰基、C
1
-C
12
-烷基、
其中 R
1
和 R
2
与它们所结合的氧原子以及与氧原子结合的碳原子可形成未取代或取代的杂环、
R
3
是氢或选自 NH
4
和加
、碱金属和碱土金属阳离子、
R
4
是 C
1
-C
12
-烷氧基羰基、
描述了一种用于化妆品和药物制剂的烷氧基羰基化合物。