Multiple free radical scavenging reactions of aurones.

Antioxidants Benzofurans Free Radicals Thermodynamics
Antioxidant activity Aurone Density functional theory Multiple H(+)/e(‒) processes

Journal

Phytochemistry
ISSN: 1873-3700
Titre abrégé: Phytochemistry
Pays: England
ID NLM: 0151434

Informations de publication

Date de publication:
Oct 2021
Historique:
received: 03 04 2021
revised: 18 06 2021
accepted: 20 06 2021
pubmed: 3 7 2021
medline: 25 8 2021
entrez: 2 7 2021
Statut: ppublish

Résumé

A series of naturally occurring 3',4'-dihydroxy aurones have been studied with regard to multiple free radical scavenging reactions in the gas and two liquid phases using density functional theory (DFT). All of the aurones prefer to perform (2 + n)-HAT mechanism to trap 2 + n free radicals, where n is the sum of the numbers of catechol and guaiacyl units in the gas and benzene phases. The second HAT reaction favours occurring in the same catechol moiety of the first HAT mechanism occurring OH group due to the formation of a stable quinone and the highly exothermic step of the final stable product formation. The catechol and guaiacyl moieties show increased potency for the second and fourth H

Identifiants

DOI: 10.1016/j.phytochem.2021.112853 PMID: 34214923
pubmed: 34214923
pii: S0031-9422(21)00202-8
doi: 10.1016/j.phytochem.2021.112853
pii:
doi:

Substances chimiques

Antioxidants 0
Benzofurans 0
Free Radicals 0
aurone 0

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

112853

Informations de copyright

Copyright © 2021 Elsevier Ltd. All rights reserved.

Auteurs

Yan-Zhen Zheng (YZ)

College of Food and Biological Engineering, Jimei University, Xiamen, 361021, PR China.

Geng Deng (G)

Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, PR China.

Yu-Cang Zhang (YC)

College of Food and Biological Engineering, Jimei University, Xiamen, 361021, PR China. Electronic address: yczhang@jmu.edu.cn.

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Classifications MeSH

questionsmedicales.fr › Actions chimiques et utilisations › Utilisations spécialisées de produits chimiques › Agents protecteurs › Antioxydants › Multiple free radical scavenging reactions of aurones.
questionsmedicales.fr › Composés hétérocycliques › Composés hétérocycliques à cycles fusionnés › Composés hétérobicycliques › Benzofuranes › Multiple free radical scavenging reactions of aurones.
questionsmedicales.fr › Composés chimiques organiques › Radicaux libres › Multiple free radical scavenging reactions of aurones.
questionsmedicales.fr › Phénomènes physiques › Thermodynamique › Multiple free radical scavenging reactions of aurones.