A novel active oxygen-resisting agent is provided which has an excellent active oxygen resistance and which exhibits a good solubility in an oil solvent.
The active oxygen-resisting agent contains as an active ingredient an amino acid derivative represented by the following formula (I) or its salt
wherein
Ar represents a 2-hydroxyphenyl group or a pyridyl group (one or more of hydrogen atoms bound to the aromatic rings of these groups may be substituted independently with a halogen atom, an alkyl group having from 1 to 6 carbon atoms, a hydroxyl group, a hydroxyalkyl group having from 1 to 6 carbon atoms, a nitro group, an alkoxyl group having from 1 to 6 carbon atoms or a carboxyl group),
R1 represents a side chain of an animo acid,
X represents -O- or -NH-,
R2 represents an alkyl group having from 8 to 22 carbon atoms, and
n represents 0 or 1.
本发明提供了一种新型活性
抗氧剂,它具有极佳的活性抗氧性,并且在油溶剂中具有良好的溶解性。
该活性
抗氧剂的活性成分是由下式(I)或其盐代表的
氨基酸衍
生物
其中
Ar 代表 2-羟基苯基或
吡啶基(与这些基团的芳香环结合的一个或多个氢原子可独立地被卤素原子、1-6 个碳原子的烷基、羟基、1-6 个碳原子的羟烷基、硝基、1-6 个碳原子的烷氧基或羧基取代)、
R1 代表
亚胺酸的侧链、
X 代表-O-或-NH-、
R2 代表具有 8 至 22 个碳原子的烷基,以及
n 代表 0 或 1。