Journal
RUSSIAN CHEMICAL BULLETIN
Volume 66, Issue 7, Pages 1217-1229Publisher
SPRINGER
DOI: 10.1007/s11172-017-1876-7
Keywords
sterically hindered o-benzoquinones; superoxide radical anion; cyclic voltammetry; UV-visible spectroscopy; antioxidant activity; lipid peroxidation
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Funding
- Russian Foundation for Basic research [16-33-00027 mol_a, 15-03-02967a]
- Council on Grants at the President of the Russian Federation (Program for State Support of Young Russian Scientists and Scientific Schools) [MK-5285.2016.3, NSh-7916.2016.3]
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The electrochemical properties of a series of sterically hindered o-benzoquinones in aprotic solvents were examined. The reaction of O-2 and KO2 with o-benzoquinones and electrogenerated o-semiquinone radical anions was studied. The formation of o-semiquinone radical anions in the reactions of KO2 with the studied o-quinones was detected using UV-visible and ESR spectroscopy. The influence of the test compounds on lipid peroxidation was considered at the molecular and tissue levels in vitro. In the most cases, o-quinones exhibit antioxidant activity, which varies depending on the type of lipid substrate.
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