New effective antioxidants of cis-2,4,5-tris(hydroxyaryl)imidazoline type were assembled from aromatic aldehydes and ammonia. Their antioxidant activity was measured against hydroxyl radical and superoxide radical anion in physiological media, and oxidation potentials were measured by cyclic voltammetry. The lead compound bearing 3,4,5-hydroxyphenyl moieties showed activity 3.5 times higher compared to Trolox.

中文翻译：

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cis-2,4,5-三(羟基芳基)咪唑啉的抗氧化活性和氧化还原特性

由芳香醛和氨组装而成的顺-2,4,5-三(羟基芳基)咪唑啉型新型有效抗氧化剂。用生理介质中的羟基自由基和超氧自由基阴离子测量它们的抗氧化活性，并通过循环伏安法测量氧化电位。与 Trolox 相比，带有 3,4,5-羟基苯基部分的先导化合物显示出高 3.5 倍的活性。