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Dryad

The Hydroperoxyl Radical Scavenging Activity of Sulfuretin: Insights from Theory

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Jun 19, 2021 version files 7.22 MB

Abstract

This dataset contains data from the calculations described in the paper: “Nguyen Thi Hoa, Do Thi My Hang, Do Phu Hieu, Huynh Van Truong, Loc Phuoc Hoang, Adam Mechler and Quan V. Vo*. (2021), The Hydroperoxyl Radical Scavenging Activity of Sulfuretin: Insights from Theory. Royal Society Open Science. 2021. The thermodynamic and kinetic calculations were applied to evaluate the HOO· radical scavenging activity of sulfuretin (SFR) in the gas phase and solvents (water and pentyl ethanoate) by the M06-2X/6-311++G(d,p) level of theory. SFR is predicted to be an excellent HOO scavenger in water at pH = 7.40 with koverall = 4.75´107 M-1 s-1, principally due to an increase in the activity of the anionic form following the single electron transfer mechanism. Consistently the activity of the neutral form is more prominent in the nonpolar environment with koverall = 1.79´104 M-1 s-1 following the formal hydrogen transfer mechanism. Thus it is predicted that SFR exhibits better HOO· antiradical activity than typical antioxidants such as resveratrol, ascorbic acid, and Trolox in the lipid medium. The hydroperoxyl radical scavenging of SFR in the aqueous solution is ~530 times faster than that of Trolox and similar to ascorbic acid or resveratrol. This suggests that SFR is a promising radical scavenger in physiological environments.