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Branković J, Milovanović VM, Petrović ZD, Simijonović D, Petrović VP. Pyrazolone-type compounds (part II): in vitro and in silico evaluation of antioxidant potential; structure-activity relationship. RSC Adv 2023; 13:2884-2895. [PMID: 36756409 PMCID: PMC9846718 DOI: 10.1039/d2ra08280b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 01/12/2023] [Indexed: 01/19/2023] Open
Abstract
The pyrazolone class comprises a variety of hybrid compounds displaying diverse biological actions. Although studied for decades, these compounds are still of interest due to their facile chemical transformations. In our previous work, we presented the synthetic route of functionalised pyrazolone derivatives. The presence of pyrazolone structural motif in many drugs, such as edaravone, prompted us to investigate the antioxidant features of the selected compounds. In this paper, we provide an extensive in vitro and in silico description of the antioxidant properties of selected pyrazolone analogues. The obtained in vitro results revealed their great antiradical potency against the DPPH radical (IC50 values in the 2.6-7.8 μM range), where the best results were obtained for analogues bearing a catechol moiety. Density functional theory (DFT) was used to assess their antioxidant capacity from the thermodynamic aspect. Here, good agreement with in vitro results was achieved. DFT was employed for the prediction of the most preferable radical scavenging pathway, also. In polar solvents, the SPLET mechanism is a favourable scavenging route, whereas in nonpolar solvents the HAT is slightly predominant. Furthermore, antioxidant mechanisms were studied in the presence of relevant reactive oxygen species. The obtained values of the reaction enthalpies with the selected radicals revealed that HAT is slightly prevailing in polar solvents, while the SPLET mechanism is dominant in nonpolar solvents. Regarding the well-known antioxidant features of the drug edaravone, these findings represent valuable data for this pyrazolone class and could be used as the basis for further investigations.
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Affiliation(s)
- Jovica Branković
- University of Kragujevac, Faculty of Science, Department of Chemistry R. Domanovića 12 34000 Kragujevac Serbia
| | - Vesna M. Milovanović
- University of Kragujevac, Faculty of Agronomy, Department of Chemistry and Chemical EngineeringCara Dušana 3432000 ČačakSerbia
| | - Zorica D. Petrović
- University of Kragujevac, Faculty of Science, Department of ChemistryR. Domanovića 1234000 KragujevacSerbia
| | - Dušica Simijonović
- University of Kragujevac, Institute for Information Technologies, Department of ScienceJovana Cvijića bb34000 KragujevacSerbia
| | - Vladimir P. Petrović
- University of Kragujevac, Faculty of Science, Department of ChemistryR. Domanovića 1234000 KragujevacSerbia
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2
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Optical absorption measurements and optoelectronic DFT calculations for ethanol solvated quercetin and anhydrous/hydrated quercetin crystals. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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3
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Branković J, Milivojević N, Milovanović V, Simijonović D, Petrović ZD, Marković Z, Šeklić DS, Živanović MN, Vukić MD, Petrović VP. Evaluation of antioxidant and cytotoxic properties of phenolic N-acylhydrazones: structure-activity relationship. ROYAL SOCIETY OPEN SCIENCE 2022; 9:211853. [PMID: 35706666 PMCID: PMC9174720 DOI: 10.1098/rsos.211853] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 05/06/2022] [Indexed: 05/03/2023]
Abstract
Cancer is still a relentless public health issue. Particularly, colorectal cancer is the third most prevalent cancer in men and the second in women. Moreover, cancer development and growth are associated with various cell disorders, such as oxidative stress and inflammation. The quest for efficient therapeutics is a challenging task, especially when it comes to achieving both cytotoxicity and selectivity. Herein, five series of phenolic N-acylhydrazones were synthesized and evaluated for their antioxidant potency, as well as their influence on HCT-116 and MRC-5 cells viability. Among 40 examined analogues, 20 of them expressed antioxidant activity against the DPPH radical. Furthermore, density functional theory was employed to estimate the antioxidant potency of the selected analogues from the thermodynamical aspect, as well as the preferable free-radical scavenging pathway. Cytotoxicity assay exposed enhanced selectivity of a number of analogues toward cancer cells. The structure-activity analysis revealed the impact of the type and position of the functional groups on both cell viability and selectivity toward cancer cells.
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Affiliation(s)
- Jovica Branković
- University of Kragujevac, Faculty of Science, Department of Chemistry, R. Domanovića 12, 34000 Kragujevac, Serbia
| | - Nevena Milivojević
- University of Kragujevac, Institute for Information Technologies, Kragujevac, Department of Science, Jovana Cvijića bb, 34000 Kragujevac, Serbia
| | - Vesna Milovanović
- University of Kragujevac, Faculty of Agronomy in Čačak, Ljubićska 30, Čačak, Serbia
| | - Dušica Simijonović
- University of Kragujevac, Institute for Information Technologies, Kragujevac, Department of Science, Jovana Cvijića bb, 34000 Kragujevac, Serbia
| | - Zorica D. Petrović
- University of Kragujevac, Faculty of Science, Department of Chemistry, R. Domanovića 12, 34000 Kragujevac, Serbia
| | - Zoran Marković
- University of Kragujevac, Institute for Information Technologies, Kragujevac, Department of Science, Jovana Cvijića bb, 34000 Kragujevac, Serbia
| | - Dragana S. Šeklić
- University of Kragujevac, Institute for Information Technologies, Kragujevac, Department of Science, Jovana Cvijića bb, 34000 Kragujevac, Serbia
| | - Marko N. Živanović
- University of Kragujevac, Institute for Information Technologies, Kragujevac, Department of Science, Jovana Cvijića bb, 34000 Kragujevac, Serbia
| | - Milena D. Vukić
- University of Kragujevac, Faculty of Science, Department of Chemistry, R. Domanovića 12, 34000 Kragujevac, Serbia
| | - Vladimir P. Petrović
- University of Kragujevac, Faculty of Science, Department of Chemistry, R. Domanovića 12, 34000 Kragujevac, Serbia
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Antioxidant and cytotoxic activities of selected salicylidene imines: experimental and computational study. Mol Divers 2022; 26:3115-3128. [PMID: 35147861 DOI: 10.1007/s11030-021-10370-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 12/15/2021] [Indexed: 10/19/2022]
Abstract
Selected salicylidene imines were evaluated for their antioxidant and cytotoxic potentials. Several of them exerted potent scavenging capacity towards ABTS radical and hydrogen peroxide. The insight into the preferable antioxidative mechanism was reached employing density functional theory. In the absence of free radicals, the SPLET mechanism is dominant in polar surroundings, while HAT is prevailing in a non-polar environment. The results obtained for the reactions of the most active compounds with some medically relevant radicals pointed out competition between HAT and SPLET mechanisms. The assessment of their cytotoxic properties revealed inhibition of ER-a human breast adenocarcinoma cells or estrogen-independent prostate cancer cells. Molecular docking study with the cyclooxygenase (COX) 2 enzyme was performed to examine the most probable bioactive conformations and possible interactions between the tested derivatives and COX-2 binding pocket.
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5
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Shi C, Liu M, Zhao H, Lv Z, Liang L, Zhang B. A Novel Insight into Screening for Antioxidant Peptides from Hazelnut Protein: Based on the Properties of Amino Acid Residues. Antioxidants (Basel) 2022; 11:antiox11010127. [PMID: 35052631 PMCID: PMC8772696 DOI: 10.3390/antiox11010127] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/25/2021] [Accepted: 12/26/2021] [Indexed: 12/13/2022] Open
Abstract
This study used the properties of amino acid residues to screen antioxidant peptides from hazelnut protein. It was confirmed that the type and position of amino acid residues, grand average of hydropathy, and molecular weight of a peptide could be comprehensively applied to obtain desirable antioxidants after analyzing the information of synthesized dipeptides and BIOPEP database. As a result, six peptides, FSEY, QIESW, SEGFEW, IDLGTTY, GEGFFEM, and NLNQCQRYM were identified from hazelnut protein hydrolysates with higher antioxidant capacity than reduced Glutathione (GSH) against linoleic acid oxidation. The peptides having Tyr residue at C-terminal were found to prohibit the oxidation of linoleic acid better than others. Among them, peptide FSEY inhibited the rancidity of hazelnut oil very well in an oil-in-water emulsion. Additionally, quantum chemical parameters proved Tyr-residue to act as the active site of FSEY are responsible for its antioxidation. This is the first presentation of a novel approach to excavating desired antioxidant peptides against lipid oxidation from hazelnut protein via the properties of amino acid residues.
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Affiliation(s)
- Chenshan Shi
- Beijing Key Laboratory of Forest Food Processing and Safety, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (C.S.); (M.L.); (H.Z.); (Z.L.)
| | - Miaomiao Liu
- Beijing Key Laboratory of Forest Food Processing and Safety, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (C.S.); (M.L.); (H.Z.); (Z.L.)
| | - Hongfei Zhao
- Beijing Key Laboratory of Forest Food Processing and Safety, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (C.S.); (M.L.); (H.Z.); (Z.L.)
| | - Zhaolin Lv
- Beijing Key Laboratory of Forest Food Processing and Safety, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (C.S.); (M.L.); (H.Z.); (Z.L.)
| | - Lisong Liang
- Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, China
- Hazelnut Engineering and Technical Research Center of the State Forestry and Grassland Administration, Beijing 100091, China
- National Innovation Alliance of Hazelnut Industry, Beijing 100091, China
- Correspondence: (L.L.); (B.Z.); Tel.: +86-010-6288-9634 (L.L.); +86-010-6233-8221 (B.Z.)
| | - Bolin Zhang
- Beijing Key Laboratory of Forest Food Processing and Safety, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (C.S.); (M.L.); (H.Z.); (Z.L.)
- Correspondence: (L.L.); (B.Z.); Tel.: +86-010-6288-9634 (L.L.); +86-010-6233-8221 (B.Z.)
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6
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Irfan A, Imran M, Al-Sehemi AG, Shah AT, Hussien M, Mumtaz MW. Exploration of electronic properties, radical scavenging activity and QSAR of oxadiazole derivatives by molecular docking and first-principles approaches. Saudi J Biol Sci 2021; 28:7416-7421. [PMID: 34867045 PMCID: PMC8626296 DOI: 10.1016/j.sjbs.2021.08.049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 08/14/2021] [Accepted: 08/15/2021] [Indexed: 01/01/2023] Open
Abstract
Eight new oxadiazole derivatives were designed then geometries for ground state were optimized through Density Functional Theory (DFT) at B3LYP/6-31G** level. Single electron transfer mechanism has been studied to understand the antioxidant ability of the oxadiazole derivatives. Then molecular electrostatic potential and quantitative structure–activity relationship (QSAR) was probed. Additionally, we shed light on different molecular descriptors, e.g., electrophilicity(ω), electronegativity(χ), electrophilicity indices(ωi), hardness(η), softness(S) and chemical potential(μ).The smaller value of ionization potential for 5a is showing that it might be efficient antioxidant candidate. The electrophilic reactive sites in 2a, 3a, 4a, 5a and 7a derivatives might be a good choice for reactivity that would be advantageous to improve the biological activity. The polar surface area of 3a, 4a and 5a derivatives was found < 60 A2 which is enlightening that these drugs might be suitable as orally active and for brain penetration. First-principles calculations and molecular docking results revealed that 5a would lead to superior antioxidant activity.
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Affiliation(s)
- Ahmad Irfan
- Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Muhammad Imran
- Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Abdullah G Al-Sehemi
- Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Asma Tufail Shah
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore 54600, Pakistan
| | - Mohamed Hussien
- Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia.,Pesticide Formulation Department, Central Agricultural Pesticide Laboratory, Agricultural Research Center, Dokki, Giza 12618, Egypt
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7
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Cuesta Calvo PV, Rodrigues Batista P, Rodrigues de Oliveira Silva R, Converti A, Al Arni S, Solisio C, Ducati LC, Alves Palma MS. Flow Synthesis of 2‐[Methyl(pyridin‐2‐yl)amino]ethanol: An Experimental and Computational Study. Chem Eng Technol 2020. [DOI: 10.1002/ceat.202000423] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Paulo Victor Cuesta Calvo
- University of São Paulo School of Pharmaceutical Sciences Av. Prof. Lineu Prestes, 580 – Butantã 05508-000 São Paulo SP Brazil
| | - Patrick Rodrigues Batista
- University of São Paulo Institute of Chemistry Av. Prof. Lineu Prestes, 748 – Butantã 05508-000 São Paulo SP Brazil
| | | | - Attilio Converti
- University of Genoa, Pole of Chemical Engineering Department of Civil, Chemical and Environmental Engineering via Opera Pia 15 16145 Genoa Italy
| | - Saleh Al Arni
- University of Ha'il Department of Chemical Engineering College of Engineering P.O. Box 2440 81441 Ha'il Saudi Arabia
| | - Carlo Solisio
- University of Genoa, Pole of Chemical Engineering Department of Civil, Chemical and Environmental Engineering via Opera Pia 15 16145 Genoa Italy
| | - Lucas C. Ducati
- University of São Paulo Institute of Chemistry Av. Prof. Lineu Prestes, 748 – Butantã 05508-000 São Paulo SP Brazil
| | - Mauri Sergio Alves Palma
- University of São Paulo School of Pharmaceutical Sciences Av. Prof. Lineu Prestes, 580 – Butantã 05508-000 São Paulo SP Brazil
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8
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Queiroz AN, Martins CC, Santos KLB, Carvalho ES, Owiti AO, Oliveira KRM, Herculano AM, da Silva ABF, Borges RS. Experimental and theoretical study on structure-tautomerism among edaravone, isoxazolone, and their heterocycles derivatives as antioxidants. Saudi Pharm J 2020; 28:819-827. [PMID: 32647483 PMCID: PMC7335820 DOI: 10.1016/j.jsps.2020.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 06/03/2020] [Indexed: 01/07/2023] Open
Abstract
Edaravone is a heterocyclic pyrazolone compound. It has pronounced effect against free radicals, however renal and hepatic disorders have been reported. Isoxazolones are considered bioisosteric analogues of pyrazolones and may have comparable properties. Thus, we investigated the structural and electronic influences for edaravone, isoxazolone, and their tautomers on antioxidant process. Structure and tautomerism study among edaravone, isoxazolone and their heterocycles derivatives were related to antioxidant mechanisms by using the hybrid DFT method B3LYP with the basis sets 6-31++G(2d,2p). The C—H tautomer was the most stable and energetically favored among them. Intramolecular N—H—N hydrogen bonds and polar medium were responsible for the low energy differences among all possible tautomers. N—H tautomers in both systems proved to be better antioxidant by SET (single electron transfer), while O—H tautomers were better antioxidant on HAT (homolytic hydrogen atom transfer) mechanism. Theoretical calculation showed that edaravone is more potent than phenylisoxazolone, however, both has similar antioxidant scavenging on experimental DPPH. The carbonyliminic system played a very important role in the antioxidant activity for both studied classes.
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Affiliation(s)
- Auriekson N Queiroz
- Pharmaceutical Chemistry Laboratory, College of Pharmacy, Health Science Institute, Federal University of Pará, 66075-110 Belém, PA, Brazil
| | - Camila C Martins
- Pharmaceutical Chemistry Laboratory, College of Pharmacy, Health Science Institute, Federal University of Pará, 66075-110 Belém, PA, Brazil
| | - Kelton L B Santos
- Pharmaceutical Chemistry Laboratory, College of Pharmacy, Health Science Institute, Federal University of Pará, 66075-110 Belém, PA, Brazil.,Faculdade de Química, Campus Santana, Universidade Federal do Amapá, Santana, AP, Brazil
| | - Ederson S Carvalho
- Pharmaceutical Chemistry Laboratory, College of Pharmacy, Health Science Institute, Federal University of Pará, 66075-110 Belém, PA, Brazil
| | - Alex O Owiti
- California University of Science and Medicine, San Bernardino, CA, United States
| | - Karen R M Oliveira
- Programa de Pós-Graduação em Neurociências e Biologia Celular, Biological Sciences Institute, Federal University of Pará, 66075-110 Belém, PA, Brazil
| | - Anderson M Herculano
- Programa de Pós-Graduação em Neurociências e Biologia Celular, Biological Sciences Institute, Federal University of Pará, 66075-110 Belém, PA, Brazil
| | - Albérico B F da Silva
- Instituto de Química de São Carlos, Universidade de São Paulo, Avenida Trabalhador São-carlense, 400, São Carlos, SP, Brazil
| | - Rosivaldo S Borges
- Pharmaceutical Chemistry Laboratory, College of Pharmacy, Health Science Institute, Federal University of Pará, 66075-110 Belém, PA, Brazil
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9
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Anitha S, Krishnan S, Senthilkumar K, Sasirekha V. Theoretical investigation on the structure and antioxidant activity of (+) catechin and (−) epicatechin – a comparative study. Mol Phys 2020. [DOI: 10.1080/00268976.2020.1745917] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- S. Anitha
- Department of Physics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, India
| | - S. Krishnan
- Department of Physics, Bharathiar University, Coimbatore, India
| | - K. Senthilkumar
- Department of Physics, Bharathiar University, Coimbatore, India
| | - V. Sasirekha
- Department of Physics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, India
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10
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Brovarets’ OO, Hovorun DM. Intramolecular tautomerization of the quercetin molecule due to the proton transfer: QM computational study. PLoS One 2019; 14:e0224762. [PMID: 31751372 PMCID: PMC6874073 DOI: 10.1371/journal.pone.0224762] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 10/20/2019] [Indexed: 12/21/2022] Open
Abstract
Quercetin molecule (3, 3', 4', 5, 7-pentahydroxyflavone, C15H10O7) is an important flavonoid compound of natural origin, consisting of two aromatic A and B rings linked through the C ring with endocyclic oxygen atom and five hydroxyl groups attached to the 3, 3', 4', 5 and 7 positions. This molecule is found in many foods and plants, and is known to have a wide range of therapeutic properties, like an anti-oxidant, anti-toxic, anti-inflammatory etc. In this study for the first time we have revealed and investigated the pathways of the tautomeric transformations for the most stable conformers of the isolated quercetin molecule (Brovarets' & Hovorun, 2019) via the intramolecular proton transfer. Energetic, structural, dynamical and polar characteristics of these transitions, in particular relative Gibbs free and electronic energies, characteristics of the intramolecular specific interactions-H-bonds and attractive van der Waals contacts, have been analysed in details. It was demonstrated that the most probable process among all investigated is the proton transfer from the O3H hydroxyl group of the C ring to the C2' carbon atom of the C2'H group of the B ring along the intramolecular O3H…C2' H-bond with the further formation of the C2'H2 group. It was established that the proton transfer from the hydroxyl groups to the carbon atoms of the neighboring CH groups is assisted at the transition states by the strong intramolecular HCH…O H-bond (~28.5 kcal∙mol-1). The least probable path of the proton transfer-from the C8H group to the endocyclic O1 oxygen atom-causes the decyclization of the C ring in some cases. It is shortly discussed the biological importance of the obtained results.
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Affiliation(s)
- Ol’ha O. Brovarets’
- Department of Molecular and Quantum Biophysics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Dmytro M. Hovorun
- Department of Molecular and Quantum Biophysics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- Department of Molecular Biotechnology and Bioinformatics, Institute of High Technologies, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
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11
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Brovarets’ OO, Hovorun DM. Conformational diversity of the quercetin molecule: a quantum-chemical view. J Biomol Struct Dyn 2019; 38:2817-2836. [DOI: 10.1080/07391102.2019.1656671] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ol’ha O. Brovarets’
- Department of Molecular and Quantum Biophysics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Dmytro M. Hovorun
- Department of Molecular and Quantum Biophysics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- Department of Molecular Biotechnology and Bioinformatics, Institute of High Technologies, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
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12
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Yusuff O, Abdul
Raheem MAO, Mukadam AA, Sulaimon RO. Kinetics and Mechanism of the Antioxidant Activities of C. olitorius and V. amygdalina by Spectrophotometric and DFT Methods. ACS OMEGA 2019; 4:13671-13680. [PMID: 31497684 PMCID: PMC6714516 DOI: 10.1021/acsomega.9b00851] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 07/31/2019] [Indexed: 05/08/2023]
Abstract
The kinetics and mechanism of the antioxidant activities of the methanolic extract of the leaves of two vegetables [Corchorus olitorius (C. olitorius) and Vernonia amygdalina (V. amygdalina)] have been studied using experimental and theoretical approaches. The kinetics (second order and pseudo-first order) of the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activities of the leaf extracts at varying times (30-90 min) were determined using the UV-visible spectrophotometry method at λmax = 517 nm, whereas the mechanism was studied by density functional theory at two levels of functionals (B3LYP and LC-ωPBE) using bond dissociation enthalpy and adiabatic ionization potential values. Molecular properties such as the highest occupied molecular orbital, lowest unoccupied molecular orbital, electronegativity (χ), electrophilicity (ω), hardness (η), and softness (S) of the predominant phenolic antioxidants were also compared. The second-order kinetics is favored by both plants rather than pseudo-first order; however, V. amygdalina with a second-order rate constant k 2 of 0.0152 (mM)-1 min-1 is faster in scavenging DPPH radicals than C. olitorius with a k 2 value of 0.0093 (mM)-1min-1. Chlorogenic acid and luteolin-7-O-β-glucuronide, which are the most abundant phenolic acid antioxidant in C. olitorius and V. amygdalina, both preferably scavenge the DPPH radical via a hydrogen atom transfer mechanism. This is evident from their lower bond dissociation enthalpy values than the adiabatic ionization potential values. Successful molecular docking of these phenolic compounds indicates that both compounds form favorable interactions with the therapeutic target, xanthine oxidase.
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Affiliation(s)
- Olaniyi
K. Yusuff
- Department
of Chemistry, Faculty of Physical Sciences, University of Ilorin, PMB 1515 Ilorin, Nigeria
| | - Modinah Adenike O. Abdul
Raheem
- Department
of Chemistry, Faculty of Physical Sciences, University of Ilorin, PMB 1515 Ilorin, Nigeria
- E-mail: ., . Tel: +2348035952356
| | - Abdulrahman A. Mukadam
- Department
of Chemistry, Faculty of Physical Sciences, University of Ilorin, PMB 1515 Ilorin, Nigeria
| | - Ridwan Oladayo Sulaimon
- Department
of Chemistry, King Fahd University of Petroleum
and Minerals, P.O. Box 5061, 31261 Dhahran, Saudi Arabia
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13
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Brovarets’ OO, Hovorun DM. Conformational transitions of the quercetin molecule via the rotations of its rings: a comprehensive theoretical study. J Biomol Struct Dyn 2019; 38:2865-2883. [DOI: 10.1080/07391102.2019.1645734] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Ol’ha O. Brovarets’
- Department of Molecular and Quantum Biophysics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- Department of Pharmacology, Bohomolets National Medical University, Kyiv, Ukraine
| | - Dmytro M. Hovorun
- Department of Molecular and Quantum Biophysics, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- Department of Molecular Biotechnology and Bioinformatics, Institute of High Technologies, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
- Department of Pathophysiology, Bohomolets National Medical University, Kyiv, Ukraine
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14
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Augustine C. Unravelling the Competence of Leucocyanidin in Free Radical Scavenging: A Theoretical Approach Based on Electronic Structure Calculations. J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476619020045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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15
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Borges RS, Palheta IC, Ota SSB, Morais RB, Barros VA, Ramos RS, Silva RC, Costa JDS, Silva CHTP, Campos JM, Santos CBR. Toward of Safer Phenylbutazone Derivatives by Exploration of Toxicity Mechanism. Molecules 2019; 24:molecules24010143. [PMID: 30609687 PMCID: PMC6337259 DOI: 10.3390/molecules24010143] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 12/12/2018] [Accepted: 12/15/2018] [Indexed: 12/18/2022] Open
Abstract
A drug design for safer phenylbutazone was been explored by reactivity and docking studies involving single electron transfer mechanism, as well as toxicological predictions. Several approaches about its structural properties were performed through quantum chemistry calculations at the B3LYP level of theory, together with the 6-31+G(d,p) basis sets. Molecular orbital and ionization potential were associated to electron donation capacity. The spin densities contribution showed a preferential hydroxylation at the para-positions of phenyl ring when compared to other positions. In addition, on electron abstractions the aromatic hydroxylation has more impact than alkyl hydroxylation. Docking studies indicate that six structures 1, 7, 8 and 13–15 have potential for inhibiting human as well as murine COX-2, due to regions showing similar intermolecular interactions to the observed for the control compounds (indomethacin and refecoxib). Toxicity can be related to aromatic hydroxylation. In accordance to our calculations, the derivatives here proposed are potentially more active as well safer than phenylbutazone and only structures 8 and 13–15 were the most promising. Such results can explain the biological properties of phenylbutazone and support the design of potentially safer candidates.
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Affiliation(s)
- Rosivaldo S Borges
- Núcleo de Estudos e Seleção de Moléculas Bioativas-NESBio, College of Pharmacy, Health Sciences Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
- Programa de Pós-Graduação em Química Medicinal e Modelagem Molecular, Health Science Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
| | - Ivanete C Palheta
- Núcleo de Estudos e Seleção de Moléculas Bioativas-NESBio, College of Pharmacy, Health Sciences Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
| | - Sirlene S B Ota
- Núcleo de Estudos e Seleção de Moléculas Bioativas-NESBio, College of Pharmacy, Health Sciences Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
- Programa de Pós-Graduação em Química Medicinal e Modelagem Molecular, Health Science Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
| | - Roberto B Morais
- Núcleo de Estudos e Seleção de Moléculas Bioativas-NESBio, College of Pharmacy, Health Sciences Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
- Programa de Pós-Graduação em Química Medicinal e Modelagem Molecular, Health Science Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
| | - Valéria A Barros
- Núcleo de Estudos e Seleção de Moléculas Bioativas-NESBio, College of Pharmacy, Health Sciences Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
- Programa de Pós-Graduação em Química Medicinal e Modelagem Molecular, Health Science Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
| | - Ryan S Ramos
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia-Rede BIONORTE, Federal University of Amapá, Macapá 68902-280, AP, Brazil.
| | - Rai C Silva
- Programa de Pós-Graduação em Química Medicinal e Modelagem Molecular, Health Science Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
- Laboratorio de Modelagem e Química Computacional-LMQC, Federal University of Amapá, Department of Biological Sciences. Rod. Juscelino Kubitschek, Km 02, Macapá 68902-280, AP, Brazil.
| | - Josivan da S Costa
- Laboratorio de Modelagem e Química Computacional-LMQC, Federal University of Amapá, Department of Biological Sciences. Rod. Juscelino Kubitschek, Km 02, Macapá 68902-280, AP, Brazil.
| | - Carlos H T P Silva
- Laboratório Computacional de Química Farmacêutica, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, University of Sao Paulo, São Paulo 14040-903, SP, Brazil.
| | - Joaquín M Campos
- Department of Pharmaceutical Organic Chemistry, University of Granada, 18071 Granada, Spain.
| | - Cleydson B R Santos
- Programa de Pós-Graduação em Química Medicinal e Modelagem Molecular, Health Science Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia-Rede BIONORTE, Federal University of Amapá, Macapá 68902-280, AP, Brazil.
- Laboratorio de Modelagem e Química Computacional-LMQC, Federal University of Amapá, Department of Biological Sciences. Rod. Juscelino Kubitschek, Km 02, Macapá 68902-280, AP, Brazil.
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Bensegueni R, Guergouri M, Bensouici C, Bencharif M. Synthesis, experimental and theoretical antiradical activity assessment of some azomethines and phenylhydrazones. SN APPLIED SCIENCES 2018. [DOI: 10.1007/s42452-018-0085-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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17
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Miličević A, Novak Jovanović I, Miletić G. Changes in electronic structures of flavonoids upon electrochemical oxidation and a theoretical model for the estimation of the first oxidation potential. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.07.202] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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18
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Probing the antioxidant potential of phloretin and phlorizin through a computational investigation. J Mol Model 2018; 24:101. [DOI: 10.1007/s00894-018-3632-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 03/06/2018] [Indexed: 02/07/2023]
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19
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Tajammal A, Batool M, Ramzan A, Samra MM, Mahnoor I, Verpoort F, Irfan A, Al-Sehemi AG, Munawar MA, Basra MAR. Synthesis, antihyperglycemic activity and computational studies of antioxidant chalcones and flavanones derived from 2,5 dihydroxyacetophenone. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.07.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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20
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Beheshti A, Hashemi F, Behavndi F, Zahedi M, Kolahi M, Motamedi H, Mayer P. Synthesis, structural characterization, QSAR and docking studies of a new binuclear nickel (II) complex based on the flexible tetradentate N-donor ligand as a potent antibacterial and anticancer agent. Int J Biol Macromol 2017; 104:1107-1123. [PMID: 28663150 DOI: 10.1016/j.ijbiomac.2017.06.098] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 06/22/2017] [Accepted: 06/23/2017] [Indexed: 10/19/2022]
Abstract
A new nickel (II)complex namely [Ni2(Lt)Cl4] derived from the NiCl2.6H2O and 1,1,3,3-tetrakis(3,5-dimethyl-1-pyrazolyl)propane (Lt) has been synthesized and fully characterized by the single crystal X-ray diffraction, elemental analysis, FT-IR, UV-vis, density functional theory (DFT) calculations, antibacterial and anticancer activities. In the title complex, each of the Ni(II) atoms is tetrahedrally coordinated by two N atoms from one of the chelating bidentate bis(3,5-dimethylpyrazolyl)methane units of the Lt ligand and two Cl as terminal ligands. The neighboring [Ni2(Lt)Cl4] molecules are linked together by the intermolecular CH⋯Cl hydrogen bonds to generate a 1D chain structure. The chains are further stabilized by the intermolecular CH⋯π interactions to form a two-dimensional non-covalent bonded structure. The antibacterial activity of the free Lt ligand and its Ni (II) complex shows that the ability of these compounds to inhibit growth of the tested bacteria increase from the Lt to binuclear nickel (II) complex. Scanning probe microscopy (SPM) study of the treated B. subtilis and E. coli bacteria was implemented to understand the structural changes caused by the interactions between the nickel (II) complex and the target bacteria. The cytotoxicity test of the Lt ligand and its complex was evaluated against the human carcinoma cell line (Caco-2) using the MTT assay. The results indicate that the Lt ligand and its complex display cytotoxicity against Caco-2 with the IC50 values of 36.29μM and 12.97μM, respectively. Therefore, the complex can be nominated as a potential anticancer agent. Molecular docking investigations on the five standard antibiotic, five standard anticancer drugs, free Lt ligand, title complex and twelve receptors were performed by Autodock vina function. The results of docking and DFT calculations are in line with the in vitro data obtained via the antibacterial and anticancer activity of Lt ligand and its made-complex.
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Affiliation(s)
- Azizolla Beheshti
- Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Faezeh Hashemi
- Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Fatemeh Behavndi
- Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Mansour Zahedi
- Department of Chemistry, Faculty of Chemistry, Shahid Beheshti University, G. C. Tehran, 19839, Evin, P.O. Box 19395-4716, Iran
| | - Maryam Kolahi
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Hossein Motamedi
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran; Biotechnology and Biological Science Research Center, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Peter Mayer
- Department Chemie Butenandtstr, LMU München University, München, Germany
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Bentz EN, Pomilio AB, Lobayan RM. Donor-acceptor interactions as descriptors of the free radical scavenging ability of flavans and catechin. COMPUT THEOR CHEM 2017. [DOI: 10.1016/j.comptc.2017.03.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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22
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Al-Sehemi AG, Irfan A. Effect of donor and acceptor groups on radical scavenging activity of phenol by density functional theory. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2013.06.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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23
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Han G, Zeng Q, Jiang Z, Xing T, Huang C, Li Y. MIL-101(Cr) as matrix for sensitive detection of quercetin by matrix-assisted laser desorption/ionization mass spectrometry. Talanta 2017; 164:355-361. [DOI: 10.1016/j.talanta.2016.11.044] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 11/15/2016] [Accepted: 11/20/2016] [Indexed: 01/25/2023]
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24
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Al-Sehemi AG, Irfan A, Aljubiri SM, Shaker KH. Density functional theory investigations of radical scavenging activity of 3′-Methyl-quercetin. JOURNAL OF SAUDI CHEMICAL SOCIETY 2016. [DOI: 10.1016/j.jscs.2012.08.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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25
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Bond dissociation energies and enthalpies of formation of flavonoids: A G4 and M06-2X investigation. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2016.06.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Bentz EN, Pomilio AB, Lobayan RM. Z-Isomers of (4α→6″, 2α→O→1″)-phenylflavan substituted with R'=R=OH. Conformational properties, electronic structure and aqueous solvent effects. J Mol Model 2016; 22:187. [PMID: 27444878 DOI: 10.1007/s00894-016-3034-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 06/09/2016] [Indexed: 11/28/2022]
Abstract
Procyanidins are highly hydroxylated polymers known as antioxidant compounds, thereby exhibiting beneficial effects. These compounds are protective agents against oxidative stress and the damage induced by free radicals in membranes and nucleic acids. This paper describes a study of the conformational space of (4α→6″, 2α→O→1″)-phenylflavan substituted with R'=R=OH as part of a larger study of similar structures with different substitutions. The relationships between aqueous solution-vacuum variations of some properties were studied, as well as the stabilization and reactivity of (4α→6″, 2α→O→1″)-phenylflavan substituted with R'=R=H, R'=H, R=OH, R'=R=OH, and (+)-catechin. The variations in geometric parameters and electronic properties due to conformational changes, as well as the effects of substituents and polar solvents, were evaluated and analyzed. Bader's theory of atoms in molecules was applied to characterize intramolecular interactions, along with a natural bond orbital analysis for each conformer described. The molecular electrostatic potential was rationalized by charge delocalization mechanisms and interatomic intramolecular interactions, relating them to the structural changes and topological properties of the electron charge density. Molecular polarizability and permanent electric dipole moment values were estimated. The results show the importance of a knowledge of the conformational space, and values for each conformer. Based on our previous results, we showed the existence of electron charge delocalization mechanisms acting cooperatively as "delocalization routes", showing interactions between different rings not even sharing the same plane. These "delocalization routes" were more effective for (4α→6″, 2α→O→1″)-phenylflavan substituted with R'=R=OH than for (+)-catechin, and are proposed as adding insight into the structure-antioxidant activity relationship of flavans.
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Affiliation(s)
- Erika N Bentz
- Departamento de Física, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Avda. Libertad 5300, 3400, Corrientes, Argentina
| | - Alicia B Pomilio
- Instituto de Bioquímica y Medicina Molecular [IBIMOL (ex PRALIB), UBA-CONICET], Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, C1113AAD, Buenos Aires, Argentina
| | - Rosana M Lobayan
- Departamento de Física, Facultad de Ciencias Exactas y Naturales y Agrimensura, Universidad Nacional del Nordeste, Avda. Libertad 5300, 3400, Corrientes, Argentina.
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27
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Structure–electrochemical properties correlations of some phenol derivatives investigated by electrochemical techniques. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2016. [DOI: 10.1007/s13738-016-0810-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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de Souza GLC, de Oliveira LMF, Vicari RG, Brown A. A DFT investigation on the structural and antioxidant properties of new isolated interglycosidic O-(1 → 3) linkage flavonols. J Mol Model 2016; 22:100. [DOI: 10.1007/s00894-016-2961-9] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Accepted: 03/07/2016] [Indexed: 01/05/2023]
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29
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Electronic structure of kaempferol–Cu2+ coordination compounds: a DFT, QTAIM and NBO study in the gas phase. Theor Chem Acc 2015. [DOI: 10.1007/s00214-015-1655-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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30
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Petrović ZD, Đorović J, Simijonović D, Petrović VP, Marković Z. Experimental and theoretical study of antioxidative properties of some salicylaldehyde and vanillic Schiff bases. RSC Adv 2015. [DOI: 10.1039/c5ra02134k] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A set of ten phenolic Schiff bases was evaluated for their antioxidative properties. Two of them, one salicylaldehyde and one vanillic, showed high activity. Parameters obtained by DFT supported the experimental findings.
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Affiliation(s)
- Zorica D. Petrović
- Faculty of Science
- University of Kragujevac
- Department of Chemistry
- 34000 Kragujevac
- Republic of Serbia
| | - Jelena Đorović
- Bioengineering Research and Development Center
- 34000 Kragujevac
- Republic of Serbia
| | - Dušica Simijonović
- Faculty of Science
- University of Kragujevac
- Department of Chemistry
- 34000 Kragujevac
- Republic of Serbia
| | - Vladimir P. Petrović
- Faculty of Science
- University of Kragujevac
- Department of Chemistry
- 34000 Kragujevac
- Republic of Serbia
| | - Zoran Marković
- Bioengineering Research and Development Center
- 34000 Kragujevac
- Republic of Serbia
- Department of Chemical-Technological Sciences
- State University of Novi Pazar
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31
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Understanding the cytotoxicity or cytoprotective effects of biological and synthetic quinone derivatives by redox mechanism. J Mol Model 2014; 20:2541. [DOI: 10.1007/s00894-014-2541-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Accepted: 11/17/2014] [Indexed: 01/09/2023]
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32
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Bentz EN, Pomilio AB, Lobayan RM. Exploratory conformational study of (+)-catechin. Modeling of the polarizability and electric dipole moment. J Mol Model 2014; 20:2522. [DOI: 10.1007/s00894-014-2522-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 11/03/2014] [Indexed: 11/30/2022]
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Agieienko VN, Kolesnik YV, Kalugin ON. Structure, solvation, and dynamics of Mg2+, Ca2+, Sr2+, and Ba2+ complexes with 3-hydroxyflavone and perchlorate anion in acetonitrile medium: A molecular dynamics simulation study. J Chem Phys 2014; 140:194501. [DOI: 10.1063/1.4875591] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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34
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Bentz EN, Pomilio AB, Lobayan RM. Structure and electronic properties of (+)-catechin: aqueous solvent effects. J Mol Model 2014; 20:2105. [DOI: 10.1007/s00894-014-2105-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2013] [Accepted: 12/09/2013] [Indexed: 10/25/2022]
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35
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Li L, Bai K, Cai W. Theoretical Investigation on Interaction between Guanine and Luteolin. CHINESE J CHEM PHYS 2013. [DOI: 10.1063/1674-0068/26/05/533-540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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36
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Nikitenko NG, Shestakov AF. Quantum chemical modeling of the activation and oxidation of light alkanes under mild conditions by Au(I) complexes with bioflavonoids. KINETICS AND CATALYSIS 2013. [DOI: 10.1134/s0023158413020110] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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37
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Kuo CM, Bezuidenhoudt BCB, Conradie J. Determination of the relationship between theoretical vibrational frequencies and experimental IR absorbance bands in organic molecules: computational study of oxane, chromane and flavan. J PHYS ORG CHEM 2013. [DOI: 10.1002/poc.3092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Chen-Miao Kuo
- Department of Chemistry; University of the Free State; PO Box 339; Bloemfontein; 9300; South Africa
| | | | - Jeanet Conradie
- Department of Chemistry; University of the Free State; PO Box 339; Bloemfontein; 9300; South Africa
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Chakraborty S, Biswas PK. Elucidation of the Mechanistic Pathways of the Hydroxyl Radical Scavenging Reaction by Daidzein Using Hybrid QM/MM Dynamics. J Phys Chem A 2012; 116:8775-85. [DOI: 10.1021/jp303543z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Sandipan Chakraborty
- Laboratory of Computational Biophysics & Bioengineering Department of Physics, Tougaloo College, Tougaloo Mississippi 39174, United States
| | - P. K. Biswas
- Laboratory of Computational Biophysics & Bioengineering Department of Physics, Tougaloo College, Tougaloo Mississippi 39174, United States
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Ajitha MJ, Mohanlal S, Suresh CH, Jayalekshmy A. DPPH radical scavenging activity of tricin and its conjugates isolated from "Njavara" rice bran: a density functional theory study. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:3693-3699. [PMID: 22397636 DOI: 10.1021/jf204826e] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Structural, electronic, and energetic characteristics of tricin, tricin-4'-O-(erythro-β-guaiacylglyceryl)ether (TEGE), and tricin-4'-O-(threo-β-guaiacylglyceryl)ether (TTGE), isolated from "Njavara" rice bran have been studied using DFT to explain their experimentally determined radical scavenging activity (EC(50) values) in comparison with known standards such as quercetin, myricetin, and catechin. Among the three mechanisms proposed for explaining the antioxidant activity, proton coupled-electron transfer (PC-ET), sequential proton loss electron transfer (SPLET), and electron transfer-proton transfer (ET-PT), our results support the second one. The O-H bond dissociation enthalpy (BDE) and the spin density on the oxygen with the radical character are excellent descriptors of radical scavenging activity. BDE (in kcal/mol) increased in the order myricetin (74.6) < quercetin (78.1) < catechin (78.3) < tricin (81.5) < TTGE (90.6) < TEGE (91.1), while the EC(50) increased exponentially with increase in BDE, 20.51, 42.98, 45.07, 90.39, 208.01, and 352.04 μg/mL for myricetin, quercetin, catechin, tricin, TTGE, and TEGE, respectively.
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Affiliation(s)
- Manjaly J Ajitha
- Computational Modeling and Simulation Section, National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Trivandrum, India
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Xue Y, Zheng Y, An L, Zhang L, Qian Y, Yu D, Gong X, Liu Y. A theoretical study of the structure–radical scavenging activity of hydroxychalcones. COMPUT THEOR CHEM 2012. [DOI: 10.1016/j.comptc.2011.12.020] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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41
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Quantitative prediction of enantioselectivity of Candida antarctica lipase B by combining docking simulations and quantitative structure–activity relationship (QSAR) analysis. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.molcatb.2011.06.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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42
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De Oliveira EB, Humeau C, Maia ER, Chebil L, Ronat E, Monard G, Ruiz-Lopez MF, Ghoul M, Engasser JM. An approach based on Density Functional Theory (DFT) calculations to assess the Candida antarctica lipase B selectivity in rutin, isoquercitrin and quercetin acetylation. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.molcatb.2010.06.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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43
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Azam F, El-gnidi BA, Alkskas IA. Combating oxidative stress in epilepsy: Design, synthesis, quantum chemical studies and anticonvulsant evaluation of 1-(substituted benzylidene/ethylidene)-4-(naphthalen-1-yl)semicarbazides. Eur J Med Chem 2010; 45:2817-26. [DOI: 10.1016/j.ejmech.2010.02.063] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2009] [Revised: 01/24/2010] [Accepted: 02/27/2010] [Indexed: 10/19/2022]
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Monajjemi M, Khosravi M, Honarparvar B, Mollaamin F. Substituent and solvent effects on the structural bioactivity and anticancer characteristic of catechin as a bioactive constituent of green tea. INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY 2010. [DOI: 10.1002/qua.22612] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Aparicio S. A systematic computational study on flavonoids. Int J Mol Sci 2010; 11:2017-38. [PMID: 20559499 PMCID: PMC2885091 DOI: 10.3390/ijms11052017] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2010] [Revised: 04/27/2010] [Accepted: 04/27/2010] [Indexed: 11/29/2022] Open
Abstract
17 selected flavones derivatives, flavonoids, were analyzed through a systematic B3LYP/6-311++G** computational study with the aim of understanding the molecular factors that determine their structural and energetic properties in gas phase. Flavonoids were selected in a systematic way to infer the effect of the number and relative positions of hydroxyl groups on molecular properties. Different conformers for each flavonoid were analyzed and the strength and topology of the intramolecular hydrogen bonds studied through the computation of the corresponding torsional profiles. Atoms in a Molecule, and Natural Bond Orbital methodology was applied to the analysis of charge distribution along the studied molecules, and the intramolecular hydrogen bonds. Molecular shapes were studied through full geometry optimization, and the position of the catechol ring analyzed through dihedral scans.
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Affiliation(s)
- Santiago Aparicio
- Department of Chemistry, University of Burgos, 09001 Burgos, Spain; E-Mail: ; Tel.: +34-947-258-062
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Lespade L, Bercion S. Theoretical study of the mechanism of inhibition of xanthine oxidase by flavonoids and gallic acid derivatives. J Phys Chem B 2010; 114:921-8. [PMID: 20030406 DOI: 10.1021/jp9041809] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Xanthine oxidase is a flavoprotein enzyme which catalyzes the oxidative hydroxylation of purine substrates. Because of its availability, it has become a model for structural molybdoenzymes in general. The enzyme is a well-established target of drugs against gout and hyperuricemia and exists in two forms: oxidase and deshydrogenase. In some pathologies, its level increases in oxidase form, being the source of free radicals which can cause damage to surrounding tissues. It is important to understand the mechanisms of the enzyme inhibition to help in the search of new inhibitors. The main active center is a molybdopterin buried in a cavity. Theoretical calculations can be of some help for distinguishing the important aspects in the inhibition: attraction inside the cavity and anchorage. In this paper, the molybdopterin molecule geometry has been optimized by ab initio with the DFT method and the results have been shown to be very similar to the X-ray coordinates. In order to evaluate the attraction inside the cavity, the electrostatic potential between the charged molybdopterin molecule and two series of inhibitors, some flavonoids, and some gallic acid derivatives have been calculated using the multipolar development supplied by the Gaussian package. The good concordance between the electrostatic force and IC(50) indicates that the attraction is an important factor in the inhibition and must be taken into account in the designing of new drugs.
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Affiliation(s)
- Laure Lespade
- Institut des Sciences Moléculaires, Université de Bordeaux 1, 351 cours de la Libération, 33405 Talence, France.
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Justino GC, Vieira AJSC. Antioxidant mechanisms of Quercetin and Myricetin in the gas phase and in solution--a comparison and validation of semi-empirical methods. J Mol Model 2009; 16:863-76. [PMID: 19779937 DOI: 10.1007/s00894-009-0583-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Accepted: 08/17/2009] [Indexed: 02/03/2023]
Abstract
Flavonoids have long been recognized for their general health-promoting properties, of which their antioxidant activity may play an important role. In this work we have studied the properties of two flavonols, quercetin and myricetin, using semi-empirical methods in order to validate the application of the recent Parametric Model 6 and to understand the fundamental difference between the two molecules. Their geometries have been optimized and important molecular properties have been calculated. The energetic of the possible antioxidant mechanisms have also been analyzed. The two studied flavonols do not differ significantly in their molecular properties, but the antioxidant mechanisms by which they may act in solution can be rather different. Moreover, we also show that the Parametric Model 6 can produce reliable information for this type of compounds.
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Affiliation(s)
- Gonçalo C Justino
- Requimte/CQFB - Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal.
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Antonczak S, Fiorucci S, Golebiowski J, Cabrol-Bass D. Theoretical investigations of the role played by quercetinase enzymes upon the flavonoids oxygenolysis mechanism. Phys Chem Chem Phys 2009; 11:1491-501. [DOI: 10.1039/b814588a] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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