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Hunyadi A, Agbadua OG, Takács G, Balogh GT. Scavengome of an antioxidant. VITAMINS AND HORMONES 2022; 121:81-108. [PMID: 36707145 DOI: 10.1016/bs.vh.2022.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The term "scavengome" refers to the chemical space of all the metabolites that may be formed from an antioxidant upon scavenging reactive oxygen or nitrogen species (ROS/RNS). This chemical space covers a wide variety of free radical metabolites with drug discovery potential. It is very rich in structures representing an increased chemical complexity as compared to the parent antioxidant: a wide range of unusual heterocyclic structures, new CC bonds, etc. may be formed. Further, in a biological environment, this increased chemical complexity is directly translated from the localized conditions of oxidative stress that determines the amounts and types of ROS/RNS present. Biomimetic oxidative chemistry provides an excellent tool to model chemical reactions between antioxidants and ROS/RNS. In this chapter, we provide an overview on the known metabolites obtained by biomimetic oxidation of a few selected natural antioxidants, i.e., a stilbene (resveratrol), a pair of hydroxycinnamates (caffeic acid and methyl caffeate), and a flavonol (quercetin), and discuss the drug discovery perspectives of the related chemical space.
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Affiliation(s)
- Attila Hunyadi
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Szeged, Hungary; Interdisciplinary Centre for Natural Products, University of Szeged, Szeged, Hungary.
| | - Orinhamhe G Agbadua
- Institute of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Szeged, Hungary
| | - Gábor Takács
- Department of Chemical and Environmental Process Engineering, Budapest University of Technology and Economics, Budapest, Hungary; Mcule.com Ltd., Budapest, Hungary
| | - Gyorgy T Balogh
- Department of Chemical and Environmental Process Engineering, Budapest University of Technology and Economics, Budapest, Hungary; Department of Pharmacodynamics and Biopharmacy, University of Szeged, Szeged, Hungary
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Mallepu R, Potlapally L, Gollapalli VL. Photo-oxidation of some flavonoids with photochemically generated t-BuO •radicals in a t-BuOH water system using a kinetic approach. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201700342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Radhika Mallepu
- Department of Chemistry, University College of Science; Osmania University; Hyderabad India
| | - Laxmi Potlapally
- Department of Pharmacy, University College of Technology; Osmania University; Hyderabad India
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Zenkevich IG, Pushkareva TI. Systematization of the results of the chromatography–mass spectrometry identification of the products of quercetin oxidation by atmospheric oxygen in aqueous solutions. JOURNAL OF ANALYTICAL CHEMISTRY 2017. [DOI: 10.1134/s1061934817080147] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Grúz J, Pospíšil J, Kozubíková H, Pospíšil T, Doležal K, Bunzel M, Strnad M. Determination of free diferulic, disinapic and dicoumaric acids in plants and foods. Food Chem 2014; 171:280-6. [PMID: 25308670 DOI: 10.1016/j.foodchem.2014.08.131] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 08/25/2014] [Accepted: 08/30/2014] [Indexed: 11/17/2022]
Abstract
Hydroxycinnamates are common phenolic compounds of plants and plant foods, often found in substantial quantities. Due to their high in vitro antioxidant activity they can easily be oxidized under oxidative conditions. In this study, we found that in vitro oxidation of coumaric, ferulic and sinapic acids resulted mainly in dimeric compounds. We hypothesized that these dimers are present in plants and plant foods not only in their bound form but also as free acids that can be extracted from non-hydrolyzed samples. By applying sensitive UHPLC-MS/MS method, we were able to identify and quantify four free hydroxycinnamic acid dimers for the first time, namely 8-8'-disinapic, 8-5'-diferulic, 8-O-4'-diferulic and 8-3'-dicoumaric acids, in wheat sprouts, Chinese cabbage, millet sprouts, light beer and parsley. Concentrations of dicinnamates in plant tissues ranged from 0.05 to 2.8 μg g(-1) DW and the monomer:dimer ratio ranged from 2 to 850.
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Affiliation(s)
- Jiří Grúz
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany ASCR & Palacky University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic; Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University and Institute of Experimental Botany, Academy of Sciences of Czech Republic, Šlechtitelů 11, 783 71 Olomouc-Holice, Czech Republic.
| | - Jiří Pospíšil
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany ASCR & Palacky University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic; Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University and Institute of Experimental Botany, Academy of Sciences of Czech Republic, Šlechtitelů 11, 783 71 Olomouc-Holice, Czech Republic
| | - Hana Kozubíková
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University and Institute of Experimental Botany, Academy of Sciences of Czech Republic, Šlechtitelů 11, 783 71 Olomouc-Holice, Czech Republic
| | - Tomáš Pospíšil
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University and Institute of Experimental Botany, Academy of Sciences of Czech Republic, Šlechtitelů 11, 783 71 Olomouc-Holice, Czech Republic
| | - Karel Doležal
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany ASCR & Palacky University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic; Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University and Institute of Experimental Botany, Academy of Sciences of Czech Republic, Šlechtitelů 11, 783 71 Olomouc-Holice, Czech Republic
| | - Mirko Bunzel
- Department of Food Chemistry and Phytochemistry, Karlsruhe Institute of Technology (KIT), Adenauerring 20A, 76131 Karlsruhe, Germany
| | - Miroslav Strnad
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany ASCR & Palacky University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic; Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University and Institute of Experimental Botany, Academy of Sciences of Czech Republic, Šlechtitelů 11, 783 71 Olomouc-Holice, Czech Republic
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