1
|
Kumar M, Chhillar B, Verma D, Nain S, Singh VP. Introduction of Methyl Group in Substituted Isoselenazolones: Catalytic and Mechanistic Study. J Org Chem 2023; 88:4273-4285. [PMID: 36930142 DOI: 10.1021/acs.joc.2c02831] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Copper-catalyzed direct selenation of substituted 2-bromo-N-phenylbenzamide substrates with elemental selenium powder provided a series of methoxy-substituted isoselenazolones via the C-Se and Se-N bond formations. Phenolic substituted isoselenazolones have been obtained by O-demethylation of the corresponding methoxy-substituted analogues using boron tribromide. Some isoselenazolones have been structurally characterized by X-ray single-crystal analysis. The glutathione peroxidase (GPx)-like antioxidant activity of isoselenazolones has been evaluated both in thiophenol and coupled-reductase assays. All isoselenazolones showed good GPx-like activities in the coupled-reductase assay. The ferric-reducing antioxidant power of phenolic antioxidants has also been evaluated. The best phenolic antioxidants were found to be good ferric-reducing antioxidant power agents. The single electron transfer, hydrogen atom transfer, and proton-coupled electron transfer mechanisms for the antioxidant properties of all catalysts have been supported by density functional theory calculations. The catalytic cycle was proposed for one of the phenolic isoselenazolones involving diselenide, selenenyl sulfide, selenol, and selenenic acid as intermediates using 77Se{1H} NMR spectroscopy.
Collapse
Affiliation(s)
- Manish Kumar
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| | - Babli Chhillar
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| | - Divya Verma
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| | - Sumit Nain
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| | - Vijay P Singh
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| |
Collapse
|
2
|
Collins AE, Saleh TM, Kalisch BE. Naturally Occurring Antioxidant Therapy in Alzheimer’s Disease. Antioxidants (Basel) 2022; 11:antiox11020213. [PMID: 35204096 PMCID: PMC8868221 DOI: 10.3390/antiox11020213] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/17/2022] [Accepted: 01/19/2022] [Indexed: 02/06/2023] Open
Abstract
It is estimated that the prevalence rate of Alzheimer’s disease (AD) will double by the year 2040. Although currently available treatments help with symptom management, they do not prevent, delay the progression of, or cure the disease. Interestingly, a shared characteristic of AD and other neurodegenerative diseases and disorders is oxidative stress. Despite profound evidence supporting the role of oxidative stress in the pathogenesis and progression of AD, none of the currently available treatment options address oxidative stress. Recently, attention has been placed on the use of antioxidants to mitigate the effects of oxidative stress in the central nervous system. In preclinical studies utilizing cellular and animal models, natural antioxidants showed therapeutic promise when administered alone or in combination with other compounds. More recently, the concept of combination antioxidant therapy has been explored as a novel approach to preventing and treating neurodegenerative conditions that present with oxidative stress as a contributing factor. In this review, the relationship between oxidative stress and AD pathology and the neuroprotective role of natural antioxidants from natural sources are discussed. Additionally, the therapeutic potential of natural antioxidants as preventatives and/or treatment for AD is examined, with special attention paid to natural antioxidant combinations and conjugates that are currently being investigated in human clinical trials.
Collapse
|
3
|
Yu SC, Kim IC, Ri KJ, Ri J, Kühn H. New insight into the role of glutathione reductase in glutathione peroxidase-like activity determination by coupled reductase assay: Molecular Docking Study. J Inorg Biochem 2020; 215:111276. [PMID: 33341590 DOI: 10.1016/j.jinorgbio.2020.111276] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 10/02/2020] [Accepted: 10/03/2020] [Indexed: 12/23/2022]
Abstract
Previously we have shown that among 15 substituted salicyloyl (2-hydroxybenzoyl) 5-seleninic acids (SSAs) 4 compounds with longer side chains or a cyclohexyl group exhibit no glutathione peroxidase (GPx)-like activity in the coupled reductase assay. Experimental inhibition of glutathione reductase (GR) by the selenenylsulfide (a main intermediate in the catalytic cycle for GPx-like activity determination) of one of the inactive compounds led us to assess the interactions between 15 selenenylsulfide compounds and the active site of GR by molecular docking. Docking results showed that S and Se atoms in selenenylsulfides of the compounds with no GPx-like activity were beyond 5 Å from S atom of Cys-58 or N atom of imidazole ring of His-467 (Root Mean Square Distances for general assessment of 3 major distances were over 4.8 Å) in the active site, so that they could not be catalyzed to be reduced by GR. Furthermore, their docking scores over 89 Kcal/mol meant that the selenenylsulfides were bound too strongly to the active site to leave it, leading eventually to inhibition of GR. We also applied the molecular docking to other GPx mimics such as ebselen, cyclic seleninate esters and di(propylaminomethylphenyl) diselenides to explain the differences in their GPx-like activity depending to the assays used. Our results suggest that the reduction of a selenenylsulfide by GR plays a positive role in GPx-like activity of GPx mimics in the coupled assay and recommended the prediction of possibility and strength of GPx-like activity by molecular docking before entering experimental research.
Collapse
Affiliation(s)
- Sun-Chol Yu
- Faculty of Pharmacy, Pyongyang University of Medical Sciences, Ryonhwa Dong No. 2, Central District, Pyongyang, DPR of Korea.
| | - In-Chol Kim
- Faculty of Pharmacy, Pyongyang University of Medical Sciences, Ryonhwa Dong No. 2, Central District, Pyongyang, DPR of Korea
| | - Kum-Ju Ri
- Faculty of Pharmacy, Pyongyang University of Medical Sciences, Ryonhwa Dong No. 2, Central District, Pyongyang, DPR of Korea
| | - Jin Ri
- Faculty of Pharmacy, Pyongyang University of Medical Sciences, Ryonhwa Dong No. 2, Central District, Pyongyang, DPR of Korea
| | - Hartmut Kühn
- Institute of Biochemistry, University Medicine Berlin-Charité, Chariteplatz 1, Berlin D-10117, Germany
| |
Collapse
|
4
|
Sands KN, Back TG. Key steps and intermediates in the catalytic mechanism for the reduction of peroxides by the antioxidant ebselen. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
5
|
Yu SC, Ri DM, Kühn H. Hydrophobicity and glutathione peroxidase-like activity of substituted salicyloyl-5-seleninic acids: Re-investigations on aromatic selenium compounds based on their hydrophobicity. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.02.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
6
|
Kheirabadi R, Izadyar M, Housaindokht MR. Computational Kinetic Modeling of the Catalytic Cycle of Glutathione Peroxidase Nanomimic: Effect of Nucleophilicity of Thiols on the Catalytic Activity. J Phys Chem A 2017; 122:364-374. [DOI: 10.1021/acs.jpca.7b09929] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ramesh Kheirabadi
- Department
of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, International Campus, Mashhad, Iran
| | - Mohammad Izadyar
- Department
of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | | |
Collapse
|
7
|
Barbosa NV, Nogueira CW, Nogara PA, de Bem AF, Aschner M, Rocha JBT. Organoselenium compounds as mimics of selenoproteins and thiol modifier agents. Metallomics 2017; 9:1703-1734. [PMID: 29168872 DOI: 10.1039/c7mt00083a] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Selenium is an essential trace element for animals and its role in the chemistry of life relies on a unique functional group: the selenol (-SeH) group. The selenol group participates in critical redox reactions. The antioxidant enzymes glutathione peroxidase (GPx) and thioredoxin reductase (TrxR) exemplify important selenoproteins. The selenol group shares several chemical properties with the thiol group (-SH), but it is much more reactive than the sulfur analogue. The substitution of S by Se has been exploited in organic synthesis for a long time, but in the last 4 decades the re-discovery of ebselen (2-phenyl-1,2-benzisoselenazol-3(2H)-one) and the demonstration that it has antioxidant and therapeutic properties has renovated interest in the field. The ability of ebselen to mimic the reaction catalyzed by GPx has been viewed as the most important molecular mechanism of action of this class of compound. The term GPx-like or thiol peroxidase-like reaction was previously coined in the field and it is now accepted as the most important chemical attribute of organoselenium compounds. Here, we will critically review the literature on the capacity of organoselenium compounds to mimic selenoproteins (particularly GPx) and discuss some of the bottlenecks in the field. Although the GPx-like activity of organoselenium compounds contributes to their pharmacological effects, the superestimation of the GPx-like activity has to be questioned. The ability of these compounds to oxidize the thiol groups of proteins (the thiol modifier effects of organoselenium compounds) and to spare selenoproteins from inactivation by soft-electrophiles (MeHg+, Hg2+, Cd2+, etc.) might be more relevant for the explanation of their pharmacological effects than their GPx-like activity. In our view, the exploitation of the thiol modifier properties of organoselenium compounds can be harnessed more rationally than the use of low mass molecular structures to mimic the activity of high mass macromolecules that have been shaped by millions to billions of years of evolution.
Collapse
Affiliation(s)
- Nilda V Barbosa
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| | - Cristina W Nogueira
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| | - Pablo A Nogara
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| | - Andreza F de Bem
- Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA
| | - João B T Rocha
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| |
Collapse
|
8
|
Kheirabadi R, Izadyar M. Computational Modeling of the Catalytic Cycle of Glutathione Peroxidase Nanomimic. J Phys Chem A 2016; 120:10108-10115. [PMID: 27983850 DOI: 10.1021/acs.jpca.6b11437] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
To elucidate the role of a derivative of ebselen as a mimic of the antioxidant selenoenzyme glutathione peroxidase, density functional theory and solvent-assisted proton exchange (SAPE) were applied to model the reaction mechanism in a catalytic cycle. This mimic plays the role of glutathione peroxidase through a four-step catalytic cycle. The first step is described as the oxidation of 1 in the presence of hydrogen peroxide, while selenoxide is reduced by methanthiol at the second step. In the third step of the reaction, the reduction of selenenylsulfide occurs by methanthiol, and the selenenic acid is dehydrated at the final step. Based on the kinetic parameters, step 4 is the rate-determining step (RDS) of the reaction. The bond strength of the atoms involved in the RDS is discussed with the quantum theory of atoms in molecules (QTAIM). Low value of electron density, ρ(r), and positive Laplacian values are the evidence for the covalent nature of the hydrogen bonds rupture (O30-H31, O33-H34). A change in the sign of the Laplacian, L(r), from the positive value in the reactant to a negative character at the transition state indicates the depletion of the charge density, confirming the N5-H10 and O11-Se1 bond breaking. The analysis of electron location function (ELF) and localized orbital locator (LOL) of the Se1-N5 and Se1-O11 bonds have been done by multi-WFN program. High values of ELF and LOL at the transition state regions between the Se, N, and O atoms display the bond formation. Finally, the main donor-acceptor interaction energies were analyzed using the natural bond orbital analysis for investigation of their stabilization effects on the critical bonds at the RDS.
Collapse
Affiliation(s)
- Ramesh Kheirabadi
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, International Campus , Mashhad, Iran
| | - Mohammad Izadyar
- Computational Chemistry Center, Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad , Mashhad, Iran
| |
Collapse
|
9
|
Singh VP, Poon JF, Yan J, Lu X, Ott MK, Butcher RJ, Gates PJ, Engman L. Nitro-, Azo-, and Amino Derivatives of Ebselen: Synthesis, Structure, and Cytoprotective Effects. J Org Chem 2016; 82:313-321. [PMID: 27997177 DOI: 10.1021/acs.joc.6b02418] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Novel azo-bis-ebselen compounds 7 were prepared by reduction of 7-nitro-2-aryl-1,2-benzisoselenazol-3(2H)-ones 3 and 6 with sodium benzenetellurolate, NaTeC6H5, and by reaction of 2-bromo-3-nitrobenzamides with Na2Se2. The X-ray structure of 7b showed that the molecule, due to strong intramolecular secondary Se···N interactions, is completely planar. Azo-compounds 7 upon further reaction with NaTeC6H5 were reductively cleaved to provide 2 equiv of the corresponding aromatic amine. The weak Se-N bond was not stable enough to survive the reaction conditions, and diselenides 8 were isolated after workup. Whereas azo-bis-ebselens 7 were poor mimics of the glutathione peroxidase (GPx)-enzymes, nitroebselens 3, 6, and 11b and diselenides 8 were 3-6-fold more active than ebselen. Based on 77Se NMR spectroscopy, a catalytic cycle for diselenide 8b, involving aminoebselen 14, was proposed. As assessed by chemiluminescence measurements, the good GPx-mimics could reduce production of reactive oxygen species (ROS) in stimulated human mononuclear cells more efficiently than Trolox. No toxic effects of the compounds were seen in MC3T3-cells at 25 μM.
Collapse
Affiliation(s)
- Vijay P Singh
- Department of Chemistry-BMC, Uppsala University , Box 576, SE-751 23 Uppsala, Sweden
| | - Jia-Fei Poon
- Department of Chemistry-BMC, Uppsala University , Box 576, SE-751 23 Uppsala, Sweden
| | - Jiajie Yan
- Department of Chemistry-BMC, Uppsala University , Box 576, SE-751 23 Uppsala, Sweden
| | - Xi Lu
- Division of Applied Materials Science, Department of Engineering Sciences, Uppsala University , Uppsala, Sweden
| | - Marjam Karlsson Ott
- Division of Applied Materials Science, Department of Engineering Sciences, Uppsala University , Uppsala, Sweden
| | - Ray J Butcher
- Department of Chemistry, Howard University , Washington, D.C. 20059, United States
| | - Paul J Gates
- University of Bristol , School of Chemistry, Bristol, BS8 1TS, United Kingdom
| | - Lars Engman
- Department of Chemistry-BMC, Uppsala University , Box 576, SE-751 23 Uppsala, Sweden
| |
Collapse
|
10
|
Computational kinetic modeling of the selenol catalytic activity as the glutathione peroxidase nanomimic. J Theor Biol 2016; 409:108-114. [PMID: 27596529 DOI: 10.1016/j.jtbi.2016.09.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 08/01/2016] [Accepted: 09/01/2016] [Indexed: 11/21/2022]
Abstract
Density functional theory and solvent-assisted proton exchange methods have been applied for computational modeling of the catalytic cycle of selenol zwitterion anion from the kinetic and thermodynamic viewpoints. Selenol zwitterion anion has been represented as an effective glutathione peroxidase nanomimic. It reduces peroxides through a three-step pathway. In the first step, seleninic acid is produced through deprotonating of the selenol zwitterion anion in the presence of the hydrogen peroxide. Seleninic acid reacts with a thiol to form selenylsulfide in the second step. In the last step, selenylsulfide is reduced by the second thiol and regenerates selenolate anion through disulfide formation. Selenol zwitterion anion in comparison to more widely studied compounds such as ebselen has a good activity to react with hydrogen peroxide and producing seleninic acid. The energy barrier of this reaction is 11.7kcalmol-1 which is smaller than the reported enzyme mimics. Moreover, the reactions of seleninic acid and selenylsulfide with methanethiol, which is used as a nucleophile, are exothermic by -18.4 or -57.0kcalmol-1, respectively. Based on the global electron density transfer value of -0.507 e from the natural atomic charge analysis, an electronic charge depletion at the transition state (TS), electron-donor substitutions on the selenolate facilitates the reduction reaction, effectively. Finally, the nature of the bond formation/cleavage at the TS has been quantitatively described by using the topological analyses.
Collapse
|
11
|
Tanini D, D'Esopo V, Chen D, Barchielli G, Capperucci A. Novel sulfur and selenium-containing antioxidants: Synthesis and evaluation of their GPx-like activity. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2016.1252365] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Damiano Tanini
- Dipartimento di Chimica “Ugo Schiff”, University of Florence, Sesto Fiorentino, Florence, Italy
| | - Veronica D'Esopo
- Dipartimento di Chimica “Ugo Schiff”, University of Florence, Sesto Fiorentino, Florence, Italy
| | - Dan Chen
- Dipartimento di Chimica “Ugo Schiff”, University of Florence, Sesto Fiorentino, Florence, Italy
| | - Giulia Barchielli
- Dipartimento di Chimica “Ugo Schiff”, University of Florence, Sesto Fiorentino, Florence, Italy
| | - Antonella Capperucci
- Dipartimento di Chimica “Ugo Schiff”, University of Florence, Sesto Fiorentino, Florence, Italy
| |
Collapse
|
12
|
Torsello M, Pimenta AC, Wolters LP, Moreira IS, Orian L, Polimeno A. General AMBER Force Field Parameters for Diphenyl Diselenides and Diphenyl Ditellurides. J Phys Chem A 2016; 120:4389-400. [DOI: 10.1021/acs.jpca.6b02250] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mauro Torsello
- Dipartimento
di Scienze Chimiche, Università degli Studi di Padova, Via
Marzolo 1, 35131 Padova, Italy
| | - Antonio C. Pimenta
- CNC−Center for Neuroscience
and Cell Biology, Universidade de Coimbra, Rua Larga, FMUC, Polo I, 1°andar, 3004-517 Coimbra, Portugal
| | - Lando P. Wolters
- Dipartimento
di Scienze Chimiche, Università degli Studi di Padova, Via
Marzolo 1, 35131 Padova, Italy
| | - Irina S. Moreira
- CNC−Center for Neuroscience
and Cell Biology, Universidade de Coimbra, Rua Larga, FMUC, Polo I, 1°andar, 3004-517 Coimbra, Portugal
| | - Laura Orian
- Dipartimento
di Scienze Chimiche, Università degli Studi di Padova, Via
Marzolo 1, 35131 Padova, Italy
| | - Antonino Polimeno
- Dipartimento
di Scienze Chimiche, Università degli Studi di Padova, Via
Marzolo 1, 35131 Padova, Italy
| |
Collapse
|
13
|
Bortoli M, Wolters LP, Orian L, Bickelhaupt FM. Addition-Elimination or Nucleophilic Substitution? Understanding the Energy Profiles for the Reaction of Chalcogenolates with Dichalcogenides. J Chem Theory Comput 2016; 12:2752-61. [PMID: 27096625 DOI: 10.1021/acs.jctc.6b00253] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We have quantum chemically explored the mechanism of the substitution reaction between CH3X(-) and the homo- and heterodichalcogenides CH3X'X″CH3 (X, X', X″ = S, Se, Te) using relativistic density functional theory at ZORA-OLYP/TZ2P and COSMO for simulating the effect of aqueous solvation. In the gas phase, all substitution reactions proceed via a triple-well addition-elimination mechanism that involves a stable three-center intermediate. Aqueous solvation, in some cases, switches the character of the mechanism to double-well SN2 in which the stable three-center intermediate has become a labile transition state. We rationalize reactivity trends and some puzzling aspects of these elementary reactions, in particular, vanishing activation energies and ghost three-center intermediates, using the activation strain model (ASM).
Collapse
Affiliation(s)
- Marco Bortoli
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova , Via Marzolo 1, 35129 Padova, Italy
| | - Lando P Wolters
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova , Via Marzolo 1, 35129 Padova, Italy
| | - Laura Orian
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova , Via Marzolo 1, 35129 Padova, Italy
| | - F Matthias Bickelhaupt
- Department of Theoretical Chemistry and Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam , De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands.,Institute for Molecules and Materials (IMM), Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| |
Collapse
|
14
|
Bayse CA, Shoaf AL. Effect of Methoxy Substituents on the Activation Barriers of the Glutathione Peroxidase-Like Mechanism of an Aromatic Cyclic Seleninate. Molecules 2015; 20:10244-52. [PMID: 26046321 PMCID: PMC6272359 DOI: 10.3390/molecules200610244] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 05/26/2015] [Accepted: 06/01/2015] [Indexed: 01/09/2023] Open
Abstract
Density functional theory (DFT) models including explicit water molecules have been used to model the redox scavenging mechanism of aromatic cyclic seleninates. Experimental studies have shown that methoxy substitutions affect the rate of scavenging of reactive oxygen species differently depending upon the position. Activities are enhanced in the para position, unaffected in the meta, and decreased in the ortho. DFT calculations show that the activation barrier for the oxidation of the selenenyl sulfide, a proposed key intermediate, is higher for the ortho methoxy derivative than for other positions, consistent with the low experimental conversion rate.
Collapse
Affiliation(s)
- Craig A Bayse
- Department of Chemistry and Biochemistry, Old Dominion University, Hampton Boulevard, Norfolk, VA 23529, USA.
| | - Ashley L Shoaf
- Department of Chemistry and Biochemistry, Old Dominion University, Hampton Boulevard, Norfolk, VA 23529, USA.
| |
Collapse
|
15
|
Wang Z, Wang Y, Li W, Liu Z, Luo Z, Sun Y, Wu R, Huang L, Li X. Computer-assisted designed “selenoxy–chinolin”: a new catalytic mechanism of the GPx-like cycle and inhibition of metal-free and metal-associated Aβ aggregation. Dalton Trans 2015; 44:20913-25. [DOI: 10.1039/c5dt02130h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Using support from rational computer-assisted design, a novel series of hybrids designed by fusing the metal-chelating agent CQ and the antioxidant ebselen were synthesized and evaluated as multitarget-directed ligands.
Collapse
Affiliation(s)
- Zhiren Wang
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Yali Wang
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Wenrui Li
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Zhihong Liu
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Zonghua Luo
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Yang Sun
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Ruibo Wu
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Ling Huang
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Xingshu Li
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| |
Collapse
|
16
|
Orian L, Toppo S. Organochalcogen peroxidase mimetics as potential drugs: a long story of a promise still unfulfilled. Free Radic Biol Med 2014; 66:65-74. [PMID: 23499840 DOI: 10.1016/j.freeradbiomed.2013.03.006] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 03/04/2013] [Accepted: 03/05/2013] [Indexed: 12/14/2022]
Abstract
Organochalcogen compounds have attracted the interest of a multitude of studies to design potential therapeutic agents mimicking the peroxidase activity of selenium-based glutathione peroxidases (GPx's). Starting from the pioneering ebselen, various compounds have been synthesized over the years, which may be traced in three major classes of molecules: cyclic selenenyl amides, diaryl diselenides, and aromatic or aliphatic monoselenides. These compounds share common features and determinants needed to exert an efficient GPx-like activity, such as polarizing groups in close proximity to selenium and steric effects. Nonetheless, the reactivity of selenium, and tellurium as well, poses serious problems for the predictability of the biological effects of these compounds in vivo when used as potential drugs. These molecules, indeed, interfere with thiols of redox-regulated proteins and enzymes, leading to unexpected biological effects. The various chemical aspects of the reaction mechanism of peroxidase mimetics are surveyed here, focusing on experimental evidence and quantum mechanics calculations of organochalcogen representatives of the various classes.
Collapse
Affiliation(s)
- Laura Orian
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, 35129 Padova, Italy.
| | - Stefano Toppo
- Dipartimento di Medicina Molecolare, Università degli Studi di Padova, 35121 Padova, Italy.
| |
Collapse
|
17
|
|
18
|
Antony S, Bayse CA. Modeling the Mechanism of the Glutathione Peroxidase Mimic Ebselen. Inorg Chem 2011; 50:12075-84. [DOI: 10.1021/ic201603v] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sonia Antony
- Department of Chemistry and Biochemistry, Old Dominion University, Hampton Boulevard, Norfolk, Virginia 23529, United States
| | - Craig A. Bayse
- Department of Chemistry and Biochemistry, Old Dominion University, Hampton Boulevard, Norfolk, Virginia 23529, United States
| |
Collapse
|
19
|
Selvakumar K, Shah P, Singh HB, Butcher RJ. Synthesis, Structure, and Glutathione Peroxidase-Like Activity of Amino Acid Containing Ebselen Analogues and Diaryl Diselenides. Chemistry 2011; 17:12741-55. [DOI: 10.1002/chem.201100930] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2011] [Revised: 08/04/2011] [Indexed: 02/03/2023]
|
20
|
Singh VP, Singh HB, Butcher RJ. Synthesis and Glutathione Peroxidase-Like Activities of Isoselenazolines. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100899] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
21
|
Toxicology and pharmacology of selenium: emphasis on synthetic organoselenium compounds. Arch Toxicol 2011; 85:1313-59. [DOI: 10.1007/s00204-011-0720-3] [Citation(s) in RCA: 330] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Accepted: 05/18/2011] [Indexed: 02/07/2023]
|
22
|
Heverly-Coulson GS, Boyd RJ. Systematic Study of the Performance of Density Functional Theory Methods for Prediction of Energies and Geometries of Organoselenium Compounds. J Phys Chem A 2011; 115:4827-31. [DOI: 10.1021/jp201455f] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Russell J. Boyd
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4J3
| |
Collapse
|
23
|
Bayse CA, Pavlou A. Tuning the activity of glutathione peroxidase mimics through intramolecular Se⋯N,O interactions: A DFT study incorporating solvent-assisted proton exchange (SAPE). Org Biomol Chem 2011; 9:8006-15. [DOI: 10.1039/c1ob05827d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
24
|
Ali ST, Karamat S, Kóňa J, Fabian WMF. Theoretical Prediction of pKa Values of Seleninic, Selenenic, Sulfinic, and Carboxylic Acids by Quantum-Chemical Methods. J Phys Chem A 2010; 114:12470-8. [DOI: 10.1021/jp102266v] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- S. Tahir Ali
- Institut für Chemie, Karl Franzens Universität Graz, Heinrichstrasse 28, A-8010 Graz, Austria, and Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, 845 38 Bratislava, Slovak Republic
| | - Sajjad Karamat
- Institut für Chemie, Karl Franzens Universität Graz, Heinrichstrasse 28, A-8010 Graz, Austria, and Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, 845 38 Bratislava, Slovak Republic
| | - Juraj Kóňa
- Institut für Chemie, Karl Franzens Universität Graz, Heinrichstrasse 28, A-8010 Graz, Austria, and Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, 845 38 Bratislava, Slovak Republic
| | - Walter M. F. Fabian
- Institut für Chemie, Karl Franzens Universität Graz, Heinrichstrasse 28, A-8010 Graz, Austria, and Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, 845 38 Bratislava, Slovak Republic
| |
Collapse
|
25
|
Heverly-Coulson GS, Boyd RJ. Theoretical Investigations on the Reaction of Monosubstituted Tertiary-Benzylamine Selenols with Hydrogen Peroxide. J Phys Chem A 2010; 114:10706-11. [DOI: 10.1021/jp105651x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
| | - Russell J. Boyd
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4J3
| |
Collapse
|
26
|
Selvakumar K, Singh H, Butcher R. Aromatic Ring Strain in Arylselenenyl Bromides: Role in Facile Synthesis of Selenenate Esters via Intramolecular Cyclization. Chemistry 2010; 16:10576-91. [DOI: 10.1002/chem.201000394] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
27
|
Heverly-Coulson GS, Boyd RJ. Reduction of Hydrogen Peroxide by Glutathione Peroxidase Mimics: Reaction Mechanism and Energetics. J Phys Chem A 2009; 114:1996-2000. [DOI: 10.1021/jp910368u] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Russell J. Boyd
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4J3
| |
Collapse
|
28
|
Sarma BK, Mugesh G. Theoretical Investigation on the Effect of Different Nitrogen Donors on Intramolecular Seâ
â
â
N Interactions. Chemphyschem 2009; 10:3013-20. [DOI: 10.1002/cphc.200900332] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
29
|
Bhabak K, Mugesh G. A Simple and Efficient Strategy To Enhance the Antioxidant Activities of Amino-Substituted Glutathione Peroxidase Mimics. Chemistry 2008; 14:8640-51. [DOI: 10.1002/chem.200800963] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
30
|
Trujillo C, Mó O, Yáñez M, Silvi B. On the Bonding of Selenocyanates and Isoselenocyanates and Their Protonated Derivatives. J Chem Theory Comput 2008; 4:1593-9. [DOI: 10.1021/ct800178x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cristina Trujillo
- Departamento de Química, C-9. Universidad Autónoma de Madrid. Cantoblanco. 28049-Madrid. Spain, and Laboratoire de Chimie Théorique, UMR-CNRS-7616, Université de Paris 06, F-94000 Ivry, France
| | - Otilia Mó
- Departamento de Química, C-9. Universidad Autónoma de Madrid. Cantoblanco. 28049-Madrid. Spain, and Laboratoire de Chimie Théorique, UMR-CNRS-7616, Université de Paris 06, F-94000 Ivry, France
| | - Manuel Yáñez
- Departamento de Química, C-9. Universidad Autónoma de Madrid. Cantoblanco. 28049-Madrid. Spain, and Laboratoire de Chimie Théorique, UMR-CNRS-7616, Université de Paris 06, F-94000 Ivry, France
| | - Bernard Silvi
- Departamento de Química, C-9. Universidad Autónoma de Madrid. Cantoblanco. 28049-Madrid. Spain, and Laboratoire de Chimie Théorique, UMR-CNRS-7616, Université de Paris 06, F-94000 Ivry, France
| |
Collapse
|