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Castro-Godoy WD, Heredia AA, Bouchet LM, Argüello JE. Synthesis of Selenium Derivatives using Organic Selenocyanates as Masked Selenols: Chemical Reduction with Rongalite as a Simpler Tool to give Nucleophilic Selenides. Chempluschem 2024; 89:e202400183. [PMID: 38648466 DOI: 10.1002/cplu.202400183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/10/2024] [Accepted: 04/22/2024] [Indexed: 04/25/2024]
Abstract
The chemical reduction within a family of organic selenocyanates, as masked selenols, using reducing agents, such as Rongalite, sodium dithionite, and sodium thiosulfate is investigated. Using Rongalite, the corresponding diselenides were obtained quantitatively and selectively in very good to excellent yields (51-100 %) starting from alkyl, aryl, and benzyl selenocyanates. The scope of the reaction is unaffected by the electronic nature of the substituents. Furthermore, the reducing agent, Rongalite, is compatible with hydrolysable and reducing-sensitive functional groups. Additionally, a simple methodology employing the in-situ generated benzyl selenolate anion (PhCH2Se-) to promote aliphatic nucleophilic substitution, epoxide ring opening, and Michael addition reactions has been developed; thus, extending the structural diversity of the synthesized selenium derivatives.
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Affiliation(s)
- Willber D Castro-Godoy
- Dpto. de Química, Física y Matemática, Facultad de Química y Farmacia, Universidad de El Salvador, Final Av. de Mártires y Héroes del 30 de Julio, San, Salvador, 1101, El Salvador
| | - Adrián A Heredia
- INFIQC-CONICET-UNC, Dpto. de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA, Córdoba, Argentina
| | - Lydia M Bouchet
- INFIQC-CONICET-UNC, Dpto. de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA, Córdoba, Argentina
| | - Juan E Argüello
- INFIQC-CONICET-UNC, Dpto. de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA, Córdoba, Argentina
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2
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Batabyal M, Jaiswal S, Jha RK, Kumar S. Directing Group Strategy for the Isolation of Organoselenium(VI) Benzoselenonates: Metal-Free Catalysts for Hydrogen Evolution Reaction. J Am Chem Soc 2024; 146:57-61. [PMID: 38109785 DOI: 10.1021/jacs.3c10572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
The exploration of fourth-period organoelements, particularly organoseleniums in their highest VI oxidation state, is limited owing to their stability and synthesis. Herein, the isolation of a new class of quinolinyl-embedded, hexavalent selenium(VI) benzoselenonates has been discussed and further evaluated for a metal-free electrocatalytic hydrogen evolution reaction (HER). The Se(VI) benzoselenonates exhibited high Faradaic efficiency (F.E.) of metal-free H2 gas production up to 86% with a very good turnover number (TON) up to 43 and moderate overpotential (η) of 500 mV; in the presence of mild acetic acid source in a less deprotonating DMF solvent. Taken together with various (NMR, UV-vis, and EPR) spectroscopic and DFT computation studies, a plausible HER pathway is proposed, which suggests that the electrochemical reduction of quinolinyl ring is the initiation step and Se(VI) acts as the reaction site by involving a hydridic type of intermediate for the electrochemical H2 gas generation.
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Affiliation(s)
- Monojit Batabyal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Svastik Jaiswal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Raushan Kumar Jha
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
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3
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Ali F, Alom S, Ali SR, Kondoli B, Sadhu P, Borah C, Kakoti BB, Ghosh SK, Shakya A, Ahmed AB, Singh UP, Bhat HR. Ebselen: A Review on its Synthesis, Derivatives, Anticancer Efficacy and Utility in Combating SARS-COV-2. Mini Rev Med Chem 2024; 24:1203-1225. [PMID: 37711004 DOI: 10.2174/1389557523666230914103339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 05/26/2023] [Accepted: 06/16/2023] [Indexed: 09/16/2023]
Abstract
Ebselen is a selenoorganic chiral compound with antioxidant properties comparable to glutathione peroxidase. It is also known as 2-phenyl-1,2-benzisoselenazol-3(2H)-one. In studies examining its numerous pharmacological activities, including antioxidant, anticancer, antiviral, and anti- Alzheimer's, ebselen has demonstrated promising results. This review's primary objective was to emphasize the numerous synthesis pathways of ebselen and their efficacy in fighting cancer. The data were collected from multiple sources, including Scopus, PubMed, Google Scholar, Web of Science, and Publons. The starting reagents for the synthesis of ebselen are 2-aminobenzoic acid and N-phenyl benzamide. It was discovered that ebselen has the ability to initiate apoptosis in malignant cells and prevent the formation of new cancer cells by scavenging free radicals. In addition, ebselen increases tumor cell susceptibility to apoptosis by inhibiting TNF-α mediated NF-kB activation. Ebselen can inhibit both doxorubicin and daunorubicin-induced cardiotoxicity. Allopurinol and ebselen administered orally can be used to suppress renal ototoxicity and nephrotoxicity. Due to excessive administration, diclofenac can induce malignancy of the gastrointestinal tract, which ebselen can effectively suppress. Recent research has demonstrated ebselen to inhibit viral function by binding to cysteinecontaining catalytic domains of various viral proteases. It was discovered that ebselen could inhibit the catalytic dyad function of Mpro by forming an irreversible covalent bond between Se and Cys145, thereby altering protease function and inhibiting SARS-CoV-2. Ebselen may also inhibit the activation of endosomal NADPH oxidase of vascular endothelial cells, which is believed to be required for thrombotic complications in COVID-19. In this review, we have included various studies conducted on the anticancer effect of ebselen as well as its inhibition of SARS-CoV-2.
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Affiliation(s)
- Farak Ali
- Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam, 786004, India
- Girijananda Chowdhury Institute of Pharmaceutical Science, Tezpur Medical College and Hospital, Tezpur, Sonitpur Assam, 784501,India
| | - Shahnaz Alom
- Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam, 786004, India
- Girijananda Chowdhury Institute of Pharmaceutical Science, Tezpur Medical College and Hospital, Tezpur, Sonitpur Assam, 784501,India
| | - Sheikh Rezzak Ali
- Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam, 786004, India
| | - Biswanarayan Kondoli
- Department of Pharmacy, Tripura University, Suryamani Nagar, Agartala, Tripura 799022, India
| | - Prativa Sadhu
- Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam, 786004, India
| | - Chinmoyee Borah
- Girijananda Chowdhury Institute of Pharmaceutical Science, Guwahati, Kamrup, Assam, 781017, India
| | - Bibhuti Bushan Kakoti
- Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam, 786004, India
| | - Surajit Kumar Ghosh
- Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam, 786004, India
| | - Anshul Shakya
- Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam, 786004, India
| | - Abdul Baquee Ahmed
- Girijananda Chowdhury Institute of Pharmaceutical Science,Tezpur Medical College and Hospital, Tezpur, Sonitpur-784501, Assam, India
| | - Udaya Pratap Singh
- Drug Design & Discovery Laboratory, Department of Pharmaceutical Sciences, Sam Higginbottom University of Agriculture, Technology & Sciences, Allahabad, Uttar Pradesh, 211007, India
| | - Hans Raj Bhat
- Department of Pharmaceutical Sciences, Dibrugarh University, Dibrugarh, Assam, 786004, India
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4
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Jain S, Batabyal M, Thorat RA, Choudhary P, Jha RK, Kumar S. 2-Benzamide Tellurenyl Iodides: Synthesis and Their Catalytic Role in CO 2 Mitigation. Chemistry 2023; 29:e202301502. [PMID: 37338224 DOI: 10.1002/chem.202301502] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/06/2023] [Accepted: 06/20/2023] [Indexed: 06/21/2023]
Abstract
Benzamide-derived organochalcogens (chalcogen=S, Se, and Te) have shown promising interest in biological and synthetic chemistry. Ebselen molecule derived from benzamide moiety is the most studied organoselenium. However, its heavier congener organotellurium is under-explored. Here, an efficient copper-catalyzed atom economical synthetic method has been developed to synthesize 2-phenyl-benzamide tellurenyl iodides by inserting a tellurium atom into carbon-iodine bond of 2-iodobenzamides in one pot with 78-95 % yields. Further, the Lewis acidic nature of Te center and Lewis basic nature of nitrogen of the synthesized 2-Iodo-N-(quinolin-8-yl)benzamide tellurenyl iodides enabled them as pre-catalyst for the activation of epoxide with CO2 at 1 atm for the preparation of cyclic carbonates with TOF and TON values of 1447 h-1 and 4343, respectively, under solvent-free conditions. In addition, 2-iodo-N-(quinolin-8-yl)benzamide tellurenyl iodides have also been used as pre-catalyst for activating anilines and CO2 to form a variety of 1,3-diaryl ureas up to 95 % yield. The mechanistic investigation for CO2 mitigation is done by 125 Te NMR and HRMS studies. It seems that the reaction proceeds via formation of catalytically active Te-N heterocycle, an ebtellur intermediate which is isolated and structurally characterized.
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Affiliation(s)
- Saket Jain
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri By-pass Road, Bhopal, 462 066, Madhya Pradesh, India
| | - Monojit Batabyal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri By-pass Road, Bhopal, 462 066, Madhya Pradesh, India
| | - Raviraj Ananda Thorat
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri By-pass Road, Bhopal, 462 066, Madhya Pradesh, India
| | - Pratibha Choudhary
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri By-pass Road, Bhopal, 462 066, Madhya Pradesh, India
| | - Raushan Kumar Jha
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri By-pass Road, Bhopal, 462 066, Madhya Pradesh, India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri By-pass Road, Bhopal, 462 066, Madhya Pradesh, India
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5
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Zmudzinski M, Rut W, Olech K, Granda J, Giurg M, Burda-Grabowska M, Kaleta R, Zgarbova M, Kasprzyk R, Zhang L, Sun X, Lv Z, Nayak D, Kesik-Brodacka M, Olsen SK, Weber J, Hilgenfeld R, Jemielity J, Drag M. Ebselen derivatives inhibit SARS-CoV-2 replication by inhibition of its essential proteins: PL pro and M pro proteases, and nsp14 guanine N7-methyltransferase. Sci Rep 2023; 13:9161. [PMID: 37280236 DOI: 10.1038/s41598-023-35907-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 05/25/2023] [Indexed: 06/08/2023] Open
Abstract
Proteases encoded by SARS-CoV-2 constitute a promising target for new therapies against COVID-19. SARS-CoV-2 main protease (Mpro, 3CLpro) and papain-like protease (PLpro) are responsible for viral polyprotein cleavage-a process crucial for viral survival and replication. Recently it was shown that 2-phenylbenzisoselenazol-3(2H)-one (ebselen), an organoselenium anti-inflammatory small-molecule drug, is a potent, covalent inhibitor of both the proteases and its potency was evaluated in enzymatic and antiviral assays. In this study, we screened a collection of 34 ebselen and ebselen diselenide derivatives for SARS-CoV-2 PLpro and Mpro inhibitors. Our studies revealed that ebselen derivatives are potent inhibitors of both the proteases. We identified three PLpro and four Mpro inhibitors superior to ebselen. Independently, ebselen was shown to inhibit the N7-methyltransferase activity of SARS-CoV-2 nsp14 protein involved in viral RNA cap modification. Hence, selected compounds were also evaluated as nsp14 inhibitors. In the second part of our work, we employed 11 ebselen analogues-bis(2-carbamoylaryl)phenyl diselenides-in biological assays to evaluate their anti-SARS-CoV-2 activity in Vero E6 cells. We present their antiviral and cytoprotective activity and also low cytotoxicity. Our work shows that ebselen, its derivatives, and diselenide analogues constitute a promising platform for development of new antivirals targeting the SARS-CoV-2 virus.
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Affiliation(s)
- Mikolaj Zmudzinski
- Department of Chemical Biology and Bioimaging, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370, Wroclaw, Poland.
| | - Wioletta Rut
- Department of Chemical Biology and Bioimaging, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Kamila Olech
- Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Jarosław Granda
- Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Mirosław Giurg
- Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Małgorzata Burda-Grabowska
- Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Rafał Kaleta
- Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Michala Zgarbova
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo Nám. 2, 16610, Prague, Czech Republic
| | - Renata Kasprzyk
- Centre of New Technologies, University of Warsaw, Banacha 2C, 02-097, Warsaw, Poland
- College of Inter-Faculty Individual Studies in Mathematics and Natural Sciences, University of Warsaw, Banacha 2C, 02-097, Warsaw, Poland
| | - Linlin Zhang
- Institute of Molecular Medicine, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
| | - Xinyuanyuan Sun
- Institute of Molecular Medicine, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
| | - Zongyang Lv
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - Digant Nayak
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | | | - Shaun K Olsen
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - Jan Weber
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo Nám. 2, 16610, Prague, Czech Republic
| | - Rolf Hilgenfeld
- Institute of Molecular Medicine, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
- German Center for Infection Research (DZIF), Hamburg-Lübeck-Borstel-Riems Site, University of Lübeck, 23562, Lübeck, Germany
| | - Jacek Jemielity
- Centre of New Technologies, University of Warsaw, Banacha 2C, 02-097, Warsaw, Poland
| | - Marcin Drag
- Department of Chemical Biology and Bioimaging, Wroclaw University of Science and Technology, Wyb. Wyspianskiego 27, 50-370, Wroclaw, Poland.
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6
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Wang Q, Xiao F, Huang Z, Mao G, Deng GJ. CuBr 2-Catalyzed Annulation of 2-Bromo- N-Arylbenzimidamide with Se/S 8 Powder for the Synthesis of Benzo[ d]isoselenazole and Benzo[ d]isothiazole. J Org Chem 2023; 88:1963-1976. [PMID: 36720013 DOI: 10.1021/acs.joc.2c02088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A CuBr2-catalyzed annulation of 2-bromo-N-arylbenzimidamide with selenium/sulfur powder for the synthesis of benzo[d]isoselenazole and benzo[d]isothiazole in generally good yields was investigated. This synthetic strategy features good substrate scope and functional group tolerance. Furthermore, the corresponding products could be converted into N-aryl indoles via rhodiumIII-catalyzed ortho C-H activation of the N-phenyl ring, providing an efficient approach for axial aromatic molecules.
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Affiliation(s)
- Quanyuan Wang
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Hunan Province Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Fuhong Xiao
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Hunan Province Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Zhi Huang
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Hunan Province Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guojiang Mao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Guo-Jun Deng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Hunan Province Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, China
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7
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Sahoo P, Lenka DR, Batabyal M, Pain PK, Kumar S, Manna D, Kumar A. Detailed Insights into the Inhibitory Mechanism of New Ebselen Derivatives against Main Protease (M pro) of Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2). ACS Pharmacol Transl Sci 2022; 6:171-180. [PMID: 36650888 PMCID: PMC9797022 DOI: 10.1021/acsptsci.2c00203] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Indexed: 12/24/2022]
Abstract
SARS-CoV-2 main protease (Mpro/3CLpro) is a crucial target for therapeutics, which is responsible for viral polyprotein cleavage and plays a vital role in virus replication and survival. Recent studies suggest that 2-phenylbenzisoselenazol-3(2H)-one (ebselen) is a potent covalent inhibitor of Mpro, which affects its enzymatic activity and virus survival. Herein, we synthesized various ebselen derivatives to understand the mechanism of Mpro inhibition by ebselen. Using ebselen derivatives, we characterized the detailed interaction mechanism with Mpro. We discovered that modification of the parent ebselen inhibitor with an electron-withdrawing group (NO2) increases the inhibition efficacy by 2-fold. We also solved the structure of an Mpro complex with an ebselen derivative showing the mechanism of inhibition by blocking the catalytic Cys145 of Mpro. Using a combination of crystal structures and LC-MS data, we showed that Mpro hydrolyzes the new ebselen derivative and leaves behind selenium (Se) bound with Cys145 of the catalytic dyad of Mpro. We also described the binding profile of ebselen-based inhibitors using molecular modeling predictions supported by binding and inhibition assays. Furthermore, we have also solved the crystal structure of catalytically inactive mutant H41N-Mpro, which represents the inactive state of the protein where the substrate binding pocket is blocked. The inhibited structure of H41N-Mpro shows gatekeeper residues in the substrate binding pocket responsible for blocking the substrate binding; mutation of these gatekeeper residues leads to hyperactive Mpro.
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Affiliation(s)
- Pritiranjan Sahoo
- Department
of Biological Sciences, Indian Institute
of Science Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh 462066, India
| | - Dipti Ranjan Lenka
- Department
of Biological Sciences, Indian Institute
of Science Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh 462066, India
| | - Monojit Batabyal
- Department
of Chemistry, Indian Institute of Science
Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh 462066, India
| | - Pritam Kumar Pain
- Department
of Chemistry, Indian Institute of Science
Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh 462066, India
| | - Sangit Kumar
- Department
of Chemistry, Indian Institute of Science
Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh 462066, India
| | - Debasish Manna
- Department
of Chemistry, Indian Institute of Science
Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh 462066, India
| | - Atul Kumar
- Department
of Biological Sciences, Indian Institute
of Science Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh 462066, India,
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8
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Batabyal M, Upadhyay A, Kadu R, Birudukota NC, Chopra D, Kumar S. Tetravalent Spiroselenurane Catalysts: Intramolecular Se···N Chalcogen Bond-Driven Catalytic Disproportionation of H 2O 2 to H 2O and O 2 and Activation of I 2 and NBS. Inorg Chem 2022; 61:8729-8745. [PMID: 35638247 DOI: 10.1021/acs.inorgchem.2c00651] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chalcogen-bonding interactions have recently gained considerable attention in the field of synthetic chemistry, structure, and bonding. Here, three organo-spiroselenuranes, having a Se(IV) center with a strong intramolecular Se···N chalcogen-bonded interaction, have been isolated by the oxidation of the respective bis(2-benzamide) selenides derived from an 8-aminoquinoline ligand. Further, the synthesized spiroselenuranes, when assayed for their antioxidant activity, show disproportionation of hydrogen peroxide into H2O and O2 with first-order kinetics with respect to H2O2 for the first time by any organoselenium molecules as monitored by 1H NMR spectroscopy. Electron-donating 5-methylthio-benzamide ring-substituted spiroselenurane disproportionates hydrogen peroxide at a high rate of 15.6 ± 0.4 × 103 μM min-1 with a rate constant of 8.57 ± 0.50 × 10-3 s-1, whereas 5-methoxy and unsubstituted-benzamide spiroselenuranes catalyzed the disproportionation of H2O2 at rates of 7.9 ± 0.3 × 103 and 2.9 ± 0.3 × 103 μM min-1 with rate constants of 1.16 ± 0.02 × 10-3 and 0.325 ± 0.025 × 10-3 s-1, respectively. The evolved oxygen gas from the spiroselenurane-catalyzed disproportion of H2O2 has also been confirmed by a gas chromatograph-thermal conductivity detector (GCTCD) and a portable digital polarographic dissolved O2 probe. Additionally, the synthesized spiroselenuranes exhibit thiol peroxidase antioxidant activities for the reduction of H2O2 by a benzenethiol co-reductant monitored by UV-visible spectroscopy. Next, the Se···N bonded spiroselenuranes have been explored as catalysts in synthetic oxidation iodolactonization and bromination of arenes. The synthesized spiroselenurane has activated I2 toward the iodolactonization of alkenoic acids under base-free conditions. Similarly, efficient chemo- and regioselective monobromination of various arenes with NBS catalyzed by chalcogen-bonded synthesized spiroselenuranes has been achieved. Mechanistic insight into the spiroselenuranes in oxidation reactions has been gained by 77Se NMR, mass spectrometry, UV-visible spectroscopy, single-crystal X-ray structure, and theoretical (DFT, NBO, and AIM) studies. It seems that the highly electrophilic nature of the selenium center is attributed to the presence of an intramolecular Se···N interaction and a vacant coordination site in spiroselenuranes is crucial for the activation of H2O2, I2, and NBS. The reaction of H2O2, I2, and NBS with tetravalent spiroselenurane would lead to an octahedral-Se(VI) intermediate, which is reduced back to Se(IV) due to thermodynamic instability of selenium in its highest oxidation state and the presence of a strong intramolecular N-donor atom.
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Affiliation(s)
- Monojit Batabyal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri Bhopal 462 066, Madhya Pradesh, India
| | - Aditya Upadhyay
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri Bhopal 462 066, Madhya Pradesh, India
| | - Rahul Kadu
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri Bhopal 462 066, Madhya Pradesh, India.,MIT School of Engineering, MIT Art, Design and Technology University Pune, Loni Kalbhor, Maharashtra 412201, India
| | - Nihal Chaitanya Birudukota
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri Bhopal 462 066, Madhya Pradesh, India
| | - Deepak Chopra
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri Bhopal 462 066, Madhya Pradesh, India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri Bhopal 462 066, Madhya Pradesh, India
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9
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Kumar M, Singh VP. Synthesis and antioxidant activities of N-thiophenyl ebselenamines: a 77Se{ 1H} NMR mechanistic study. NEW J CHEM 2022. [DOI: 10.1039/d2nj01225a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of N-thiophenyl ebselenamines and selenenyl sulphides as efficient radical-trapping and hydroperoxide-decomposing antioxidants, respectively has been described.
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Affiliation(s)
- Manish Kumar
- 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
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10
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Dhara S, Saha M, Das AR. Ligand-free access to benzisothiazolones and benzisoselenazolones through NiFe 2O 4 catalyzed concomitant annulation of 2-halobenzanilides with chalcogens and their late-stage transformations. NEW J CHEM 2022. [DOI: 10.1039/d2nj04326b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A practical non-hazardous one-pot protocol for the synthesis of benzisothiazolones and benzisoselenazolones, involving magnetically retrievable nano-nickel ferrite catalyzed tandem annulation between 2-halobenzanilides and elemental S8 or Se.
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Affiliation(s)
- Samiran Dhara
- University of Calcutta, Faculty Council for Post-Graduate Studies in Science, Kolkata, India
| | - Moumita Saha
- Department of Chemistry, University of Calcutta, Kolkata, India
| | - Asish R. Das
- Department of Chemistry, University of Calcutta, Kolkata, India
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11
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Xu-Xu QF, Nishii Y, Uetake Y, Sakurai H, Miura M. Synthesis of Benzoisoselenazolones via Rh(III)-Catalyzed Direct Annulative Selenation by Using Elemental Selenium. Chemistry 2021; 27:17952-17959. [PMID: 34708463 DOI: 10.1002/chem.202103485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Indexed: 01/08/2023]
Abstract
Isoselenazolone derivatives have attracted significant research interest because of their potent therapeutic activities and indispensable applications in organic synthesis. Efficient construction of functionalized isoselenazolone scaffolds is still challenging, and thus new synthetic approaches with improved operational simplicity have been of particular interest. In this manuscript, we introduce a rhodium-catalyzed direct selenium annulation by using stable and tractable elemental selenium. A series of benzamides as well as acrylamides were successfully coupled with selenium under mild reaction conditions, and the obtained isoselenazolones could be pivotal synthetic precursors for several organoselenium compounds. Based on the designed control experiments and X-ray absorption spectroscopy measurements, we propose an unprecedented selenation mechanism involving a highly electrophilic Se(IV) species as the reactive selenium donor. The reaction mechanism was further verified by a computational study.
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Affiliation(s)
- Qing-Feng Xu-Xu
- Innovative Catalysis Science Division, Institute for Open and Transitionary Research Initiative (ICS-OTRI), Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yuji Nishii
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yuta Uetake
- Innovative Catalysis Science Division, Institute for Open and Transitionary Research Initiative (ICS-OTRI), Osaka University, Suita, Osaka, 565-0871, Japan.,Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Hidehiro Sakurai
- Innovative Catalysis Science Division, Institute for Open and Transitionary Research Initiative (ICS-OTRI), Osaka University, Suita, Osaka, 565-0871, Japan.,Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Masahiro Miura
- Innovative Catalysis Science Division, Institute for Open and Transitionary Research Initiative (ICS-OTRI), Osaka University, Suita, Osaka, 565-0871, Japan
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12
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Santi C, Scimmi C, Sancineto L. Ebselen and Analogues: Pharmacological Properties and Synthetic Strategies for Their Preparation. Molecules 2021; 26:4230. [PMID: 34299505 PMCID: PMC8306772 DOI: 10.3390/molecules26144230] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/07/2021] [Accepted: 07/09/2021] [Indexed: 02/06/2023] Open
Abstract
Ebselen is the leader of selenorganic compounds, and starting from its identification as mimetic of the key antioxidant enzyme glutathione peroxidase, several papers have appeared in literature claiming its biological activities. It was the subject of several clinical trials and it is currently in clinical evaluation for the treatment of COVID-19 patients. Given our interest in the synthesis and pharmacological evaluation of selenorganic derivatives with this review, we aimed to collect all the papers focused on the biological evaluation of ebselen and its close analogues, covering the timeline between 2016 and most of 2021. Our analysis evidences that, even if it lacks specificity when tested in vitro, being able to bind to every reactive cysteine, it proved to be always well tolerated in vivo, exerting no sign of toxicity whatever the administered doses. Besides, looking at the literature, we realized that no review article dealing with the synthetic approaches for the construction of the benzo[d][1,2]-selenazol-3(2H)-one scaffold is available; thus, a section of the present review article is completely devoted to this specific topic.
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Affiliation(s)
| | | | - Luca Sancineto
- Group of Catalysis and Green Organic Chemistry, Department of Pharmaceutical Sciences, University of Perugia Via del Liceo 1, 06122 Perugia, Italy; (C.S.); (C.S.)
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13
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Nano-Co3O4-catalyzed microwave-assisted one-pot synthesis of some seleno [2 , 3-b ] pyridine/quinoline derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04478-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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14
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Zhang J, Yang L, Wang Y, Cao T, Sun Z, Xu J, Liu Y, Chen G. Ebselen-Agents for Sensing, Imaging and Labeling: Facile and Full-Featured Application in Biochemical Analysis. ACS APPLIED BIO MATERIALS 2021; 4:2217-2230. [PMID: 35014346 DOI: 10.1021/acsabm.0c01561] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Phenyl-1,2-benzoselenazol-3(2H)-one (ebselen) is a classical mimic of glutathione peroxidase (GPx). Thioredoxin interaction endows ebselen attractive biological functions, such as antioxidation and anti-infection, as well as versatile therapeutic usage. Accordingly, application of ebselen analogues in biosensing, chemical labeling, imaging analysis, disease pathology, drug development, clinical treatment, etc. have been widely developed, in which mercaptans, reactive oxygen species, reactive sulfur species, peptides, and proteins were involved. Herein, focusing on the application of ebselen-agents in biochemistry, we have made a systematic summary and comprehensive review. First, we summarized both the classical and the innovative methods for preparing ebselen-agents to present the synthetic strategies. Then we discussed the full functional applicability of ebselen analogues in three fields of biochemical analysis including the fluorescence sensing and bioimaging, derivatization for high throughput fluorescence analysis, and the labeling gents for proteomics. Finally, we discussed the current challenges and perspectives for ebselen-agents as analytical tools in biological research. By presenting the multifunctional applicability of ebselen, we hope this review could appeal researchers to design the ebselen-related biomaterials for biochemical analysis.
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Affiliation(s)
- Jiawei Zhang
- Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu 273165, China
| | - Lei Yang
- Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu 273165, China
| | - Yuxin Wang
- Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu 273165, China
| | - Tianyi Cao
- Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu 273165, China
| | - Zhiwei Sun
- Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu 273165, China
| | - Jie Xu
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Yuxia Liu
- Department of Chemical Engineering and Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Guang Chen
- Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu 273165, China.,Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
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15
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Tiekink ERT. Zero-, one-, two- and three-dimensional supramolecular architectures sustained by Se …O chalcogen bonding: A crystallographic survey. Coord Chem Rev 2021; 427:213586. [PMID: 33100367 PMCID: PMC7568495 DOI: 10.1016/j.ccr.2020.213586] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 09/02/2020] [Indexed: 12/20/2022]
Abstract
The Cambridge Structural Database was evaluated for crystals containing Se…O chalcogen bonding interactions. These secondary bonding interactions are found to operate independently of complementary intermolecular interactions in about 13% of the structures they can potentially form. This number rises significantly when more specific interactions are considered, e.g. Se…O(carbonyl) interactions occur in 50% of cases where they can potentially form. In about 55% of cases, the supramolecular assemblies sustained by Se…O(oxygen) interactions are one-dimensional architectures, with the next most prominent being zero-dimensional assemblies, at 30%.
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Affiliation(s)
- Edward R T Tiekink
- Research Centre for Crystalline Materials, School of Science and Technology, 5 Jalan Universiti, Sunway University, Bandar Sunway, Selangor Darul Ehsan 47500, Malaysia
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16
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Kumar M, Chhillar B, Yadav M, Sagar P, Singhal NK, Gates PJ, Butcher RJ, Singh VP. Catalytic and highly regenerable aminic organoselenium antioxidants with cytoprotective effects. Org Biomol Chem 2021; 19:2015-2022. [DOI: 10.1039/d0ob02368j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N-Methyl ebselenamines carrying an aminic group in very close proximity to selenium as excellent chain-breaking and glutathione peroxidase-like antioxidants could reduce the production of ROS in C6 astroglial cell lines with minimal toxic effects.
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Affiliation(s)
- Manish Kumar
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160 014
- India
| | - Babli Chhillar
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160 014
- India
| | - Manisha Yadav
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160 014
- India
| | - Poonam Sagar
- Department of Biotechnology
- National Agri-Food Biotechnology Institute
- Mohali 160071
- India
| | - Nitin K. Singhal
- Department of Biotechnology
- National Agri-Food Biotechnology Institute
- Mohali 160071
- India
| | | | | | - Vijay P. Singh
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160 014
- India
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17
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Zhang X, Huang X, Zhou Y, Liu M, Wu H. Metal‐Free Synthesis of Aryl Selenocyanates and Selenaheterocycles with Elemental Selenium. Chemistry 2020; 27:944-948. [DOI: 10.1002/chem.202004005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/03/2020] [Indexed: 12/16/2022]
Affiliation(s)
- Xue Zhang
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 P. R. China
| | - Xiao‐Bo Huang
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 P. R. China
| | - Yun‐Bing Zhou
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 P. R. China
| | - Miao‐Chang Liu
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 P. R. China
| | - Hua‐Yue Wu
- College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 P. R. China
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18
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Hamsath A, Xian M. Chemistry and Chemical Biology of Selenenyl Sulfides and Thioseleninic Acids. Antioxid Redox Signal 2020; 33:1143-1157. [PMID: 32151152 PMCID: PMC7698873 DOI: 10.1089/ars.2020.8083] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 03/04/2020] [Indexed: 12/14/2022]
Abstract
Significance: Selenenyl sulfides (RSeSRs) and thioseleninic acids (RSeSHs) are the monoselenium (Se) analogs of disulfides and persulfides that contain Se-S bonds. These bonds are found in several antioxidant-regenerating enzymes as derivatives of selenocysteine, making them an important player in redox biology as it pertains to sulfur redox regulation. Recent Advances: Mechanistic studies of redox-regulating selenoenzymes such as thioredoxin reductase and glutathione peroxidase suggest crucial Se-S bonds in the active sites. Peptide models and small-molecule mimics of these active sites have been prepared to study their fundamental chemistry. These advances help pave the road to better understand the functions of the Se-S bond in the body. Critical Issues: The Se-S bond is unstable at atmospheric temperatures and pressures. Therefore, studying their properties proposes a major challenge. Currently, there are no trapping reagents specific to RSeSRs or RSeSHs, making their presence, identity, and fates in biological environments difficult to track. Future Directions: Further understanding of the fundamental chemistry/biochemistry of RSeSRs and RSeSHs is needed to understand what their intracellular targets are and to what extent they impact signaling. Besides antioxidant regeneration and peroxide radical reduction, the roles of RSeSR and RSeSHs in other systems need to be further explored.
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Affiliation(s)
- Akil Hamsath
- Department of Chemistry, Washington State University, Pullman, Washington, USA
| | - Ming Xian
- Department of Chemistry, Washington State University, Pullman, Washington, USA
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19
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Yang Y, Li C, Leng T, Huang X, Gao W, Zhou Y, Liu M, Wu H. Cu‐Catalyzed Radical Selenylation of Olefin: A Direct Access to Vinyl Selenides. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000015] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ye‐Fei Yang
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
| | - Chen‐Yuan Li
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
| | - Tao Leng
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
| | - Xiao‐Bo Huang
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
| | - Wen‐Xia Gao
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
| | - Yun‐Bing Zhou
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
| | - Miao‐Chang Liu
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
| | - Hua‐Yue Wu
- College of Chemistry and Materials EngineeringWenzhou University Wenzhou 325035 People's Republic of China
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20
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Nascimento V, Cordeiro PS, Arca M, Marini F, Sancineto L, Braga AL, Lippolis V, Iwaoka M, Santi C. Fast and easy conversion of ortho amidoaryldiselenides into the corresponding ebselen-like derivatives driven by theoretical investigations. NEW J CHEM 2020. [DOI: 10.1039/d0nj01605e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The in silico predicted Se⋯N interaction on amidoarylselenenyl iodides has been experimentally exploited for the efficient synthesis of N-substituted benzoisoselenazol-3(2H)-ones, benzoisothiazol-3(2H)-ones and ebselen, recently reported as potent antiviral agent against Sars-Cov2.
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Affiliation(s)
- Vanessa Nascimento
- Departamento de Química Orgânica
- Universidade Federal Fluminense
- Laboratório de Síntese e Aplicação de Substâncias Supramoleculares e Organocalcogênios (SupraSelen)
- Outeiro São João Batista s/n
- Niterói
| | - Pâmella Silva Cordeiro
- Departamento de Química Orgânica
- Universidade Federal Fluminense
- Laboratório de Síntese e Aplicação de Substâncias Supramoleculares e Organocalcogênios (SupraSelen)
- Outeiro São João Batista s/n
- Niterói
| | - Massimiliano Arca
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- Monserrato
- Italy
| | - Francesca Marini
- Department of Pharmaceutical Sciences
- University of Perugia
- Group of Catalysis, Synthesis and Organic Green Chemistry
- Perugia
- Italy
| | - Luca Sancineto
- Department of Pharmaceutical Sciences
- University of Perugia
- Group of Catalysis, Synthesis and Organic Green Chemistry
- Perugia
- Italy
| | - Antonio Luiz Braga
- LabSelen
- Departamento de Química
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- Monserrato
- Italy
| | - Michio Iwaoka
- Department of Chemistry
- School of Science
- Tokai University
- Kanagawa 259-1292
- Japan
| | - Claudio Santi
- Department of Pharmaceutical Sciences
- University of Perugia
- Group of Catalysis, Synthesis and Organic Green Chemistry
- Perugia
- Italy
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21
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Roopesh Kumar L, Sagar NR, Divya K, Madhu C, Sureshbabu VV. Synthesis of an amino phosphinodiselenoic acid ester and β-amino diselenides employing P 2Se 5. NEW J CHEM 2020. [DOI: 10.1039/d0nj00012d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Protic solvents furnished amino phosphinodiselenoic acid esters, whereas β-amino diselenides were obtained exclusively when reactions performed in polar aprotic solvents.
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Affiliation(s)
- L. Roopesh Kumar
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore-560 056
- India
| | - N. R. Sagar
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore-560 056
- India
| | - K. Divya
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore-560 056
- India
| | - C. Madhu
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore-560 056
- India
| | - Vommina V Sureshbabu
- Peptide Research Laboratory
- Department of Studies in Chemistry
- Bangalore University
- Bangalore-560 056
- India
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22
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Zhu D, Zheng W, Chang H, Xie H. A theoretical study on the p Ka values of selenium compounds in aqueous solution. NEW J CHEM 2020. [DOI: 10.1039/d0nj01124j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The pKa values of different kinds of selenium compounds (R-SeH) were investigated by using the ωB97XD method with a SMD model.
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Affiliation(s)
- Danfeng Zhu
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Wenrui Zheng
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Huifang Chang
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Hongyun Xie
- College of Chemistry and Chemical Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
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23
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Daolio A, Scilabra P, Di Pietro ME, Resnati C, Rissanen K, Resnati G. Binding motif of ebselen in solution: chalcogen and hydrogen bonds team up. NEW J CHEM 2020. [DOI: 10.1039/d0nj04647g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Ebselen, a compound active against SARS-CoV-2, forms a bifurcated supramolecular synthon thanks to chalcogen bond and hydrogen bond cooperation.
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Affiliation(s)
- Andrea Daolio
- Department of Chemistry
- Materials
- Chemical Engineering “Giulio Natta”
- Milano I-20131
- Italy
| | - Patrick Scilabra
- Department of Chemistry
- Materials
- Chemical Engineering “Giulio Natta”
- Milano I-20131
- Italy
| | | | - Chiara Resnati
- Recidency Program Clinical Pharmacology & Toxicology
- Università degli Studi della Campania “Luigi Vanvitelli”
- Napoli I-80138
- Italy
| | - Kari Rissanen
- Department Chemistry
- University of Jyväskylä
- Jyväskylä
- Finland
| | - Giuseppe Resnati
- Department of Chemistry
- Materials
- Chemical Engineering “Giulio Natta”
- Milano I-20131
- Italy
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24
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Bioselectivity Induced by Chirality of New Terpenyl Organoselenium Compounds. MATERIALS 2019; 12:ma12213579. [PMID: 31683558 PMCID: PMC6862013 DOI: 10.3390/ma12213579] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 10/24/2019] [Accepted: 10/29/2019] [Indexed: 12/17/2022]
Abstract
A series of new chiral benzisoselenazol-3(2H)-ones substituted on the nitrogen atom with three monoterpene moieties—p-menthane, pinane and carane—was synthesized. The compounds were obtained by the reaction of 2-(chloroseleno)benzoyl chloride with an appropriate terpene amine, first synthesized by a multistep methodology starting from the corresponding alcohol (p-menthane system) or alkene (pinene and carene systems). Compounds were tested as antioxidants and anticancer agents. The N-isopinocampheyl-1,2-benzisoselenazol-3(2H)-one was the best peroxide scavenger and antiproliferative agent on the human promyelocytic leukemia cell line HL-60. The N-menthyl-1,2-benzisoselenazol-3(2H)-one revealed the highest anticancer potential towards breast cancer line MCF-7. The influence of structure and chirality on the bio-activity of the obtained organoselenium compounds was thoroughly evaluated.
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25
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Orth N, Scheitler A, Josef V, Franke A, Zahl A, Ivanović‐Burmazović I. Synthesis of a Hybrid between SOD Mimetic and Ebselen to Target Oxidative Stress. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Nicole Orth
- Department of Chemistry and Pharmacy University of Erlangen‐Nuremberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Andreas Scheitler
- Department of Chemistry and Pharmacy University of Erlangen‐Nuremberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Verena Josef
- Department of Chemistry and Pharmacy University of Erlangen‐Nuremberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Alicja Franke
- Department of Chemistry and Pharmacy University of Erlangen‐Nuremberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Achim Zahl
- Department of Chemistry and Pharmacy University of Erlangen‐Nuremberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Ivana Ivanović‐Burmazović
- Department of Chemistry and Pharmacy University of Erlangen‐Nuremberg Egerlandstrasse 1 91058 Erlangen Germany
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26
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Sudati JH, Nogara PA, Saraiva RA, Wagner C, Alberto EE, Braga AL, Fachinetto R, Piquini PC, Rocha JBT. Diselenoamino acid derivatives as GPx mimics and as substrates of TrxR: in vitro and in silico studies. Org Biomol Chem 2019; 16:3777-3787. [PMID: 29737350 DOI: 10.1039/c8ob00451j] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Excessive production of reactive species in living cells usually has pathological effects. Consequently, the synthesis of compounds which can mimic the activity of antioxidant enzymes has inspired great interest. In this study, a variety of diselenoamino acid derivatives from phenylalanine and valine were tested to determine whether they could be functional mimics of glutathione peroxidase (GPx) and substrates for liver thioredoxin reductase (TrxR). Diselenides C and D showed the best GPx mimicking properties when compared with A and B. We suppose that the catalytic activity of diselenide GPx mimics depends on the steric effects, which can be influenced by the number of carbon atoms between the selenium atom and the amino acid residue and/or by the amino acid lateral residue. Compounds C and D stimulated NADPH oxidation in the presence of partially purified hepatic mammalian TrxR, indicating that they are substrates for TrxR. Our study indicates a possible dissociation between the two pathways for peroxide degradation (i.e., via a substrate for TrxR or via mimicry of GPx) for compounds tested in this study, except for PhSeSePh, and the antioxidant activity of diselenoamino acids can also be attributed to their capacity to mimic GPx and to be a substrate for mammalian TrxR.
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27
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Arai K, Osaka Y, Haneda M, Sato Y. Cyclic telluride reagents with remarkable glutathione peroxidase-like activity for purification-free synthesis of highly pure organodisulfides. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00562e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclic tellurides enable rapid and quantitative oxidation of various organothiols through a GPx-like catalytic cycle in a biphasic microflow system.
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Affiliation(s)
- Kenta Arai
- Department of Chemistry
- School of Science
- Tokai University
- Hiratsuka-shi
- Japan
| | - Yuui Osaka
- Department of Chemistry
- School of Science
- Tokai University
- Hiratsuka-shi
- Japan
| | - Masahiro Haneda
- Department of Chemistry
- School of Science
- Tokai University
- Hiratsuka-shi
- Japan
| | - Yuumi Sato
- Department of Chemistry
- School of Science
- Tokai University
- Hiratsuka-shi
- Japan
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28
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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]
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29
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Shukla R, Claiser N, Souhassou M, Lecomte C, Balkrishna SJ, Kumar S, Chopra D. Exploring the simultaneous σ-hole/π-hole bonding characteristics of a Br⋯π interaction in an ebselen derivative via experimental and theoretical electron-density analysis. IUCRJ 2018; 5:647-653. [PMID: 30224967 PMCID: PMC6126650 DOI: 10.1107/s2052252518011041] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 08/02/2018] [Indexed: 06/08/2023]
Abstract
In this study, the nature and characteristics of a short Br⋯π interaction observed in an ebselen derivative, 2-(2-bromophenyl)benzo[d][1,2]selenazol-3(2H)-one, has been explored. The electronic nature of this Br⋯π interaction was investigated via high-resolution X-ray diffraction and periodic density functional theory calculations using atoms-in-molecules (AIM) analysis. This study unravels the simultaneous presence of σ-hole and π-hole bonding characteristics in the same interaction. The dual characteristics of this unique Br⋯π interaction are further established via molecular electrostatic potentials (MESPs) and natural bond orbitals (NBOs).
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Affiliation(s)
- Rahul Shukla
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-Pass Road, Bhauri, Bhopal, Madhya Pradesh 462066, India
| | - Nicolas Claiser
- Cristallographie, Résonance Magnétique et Modélisations, CRM2, UMR 7036, Institut Jean Barriol, CNRS and Université de Lorraine, BP 239, Vandoeuvre-les-Nancy CEDEX F54506, France
| | - Mohamed Souhassou
- Cristallographie, Résonance Magnétique et Modélisations, CRM2, UMR 7036, Institut Jean Barriol, CNRS and Université de Lorraine, BP 239, Vandoeuvre-les-Nancy CEDEX F54506, France
| | - Claude Lecomte
- Cristallographie, Résonance Magnétique et Modélisations, CRM2, UMR 7036, Institut Jean Barriol, CNRS and Université de Lorraine, BP 239, Vandoeuvre-les-Nancy CEDEX F54506, France
| | - Shah Jaimin Balkrishna
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-Pass Road, Bhauri, Bhopal, Madhya Pradesh 462066, India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-Pass Road, Bhauri, Bhopal, Madhya Pradesh 462066, India
| | - Deepak Chopra
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-Pass Road, Bhauri, Bhopal, Madhya Pradesh 462066, India
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30
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Elsherbini M, Hamama WS, Zoorob HH. An Easy Synthetic Approach to Construct Some Ebselen Analogues and Benzo[b]selenophene Derivatives: Their Antioxidant and Cytotoxic Assessment. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3199] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Mohamed Elsherbini
- Chemistry Department, Faculty of Science; Mansoura University; El-Gomhoria Street Mansoura 35516 Egypt
- School of Chemistry; Cardiff University; Park Place, Main Building Cardiff CF10 3AT UK
| | - Wafaa S. Hamama
- Chemistry Department, Faculty of Science; Mansoura University; El-Gomhoria Street Mansoura 35516 Egypt
| | - Hanafi H. Zoorob
- Chemistry Department, Faculty of Science; Mansoura University; El-Gomhoria Street Mansoura 35516 Egypt
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31
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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.
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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.
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32
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New Chiral Ebselen Analogues with Antioxidant and Cytotoxic Potential. Molecules 2017; 22:molecules22030492. [PMID: 28335518 PMCID: PMC6155185 DOI: 10.3390/molecules22030492] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/14/2017] [Accepted: 03/17/2017] [Indexed: 11/17/2022] Open
Abstract
New chiral camphane-derived benzisoselenazol-3(2H)-ones and corresponding diselenides have been synthetized using a convenient one-pot procedure. Se-N bond was efficiently converted to an Se-Se bond, which could also be easily re-oxidized to the initial benzisoselenazolone moiety. The antioxidant activity of camphor derivatives was evaluated and compared to the reactivity of a series of N-amino acid benzisoselenazol-3(2H)-ones obtained by a modified procedure involving the improved synthesis and isolation of the diseleno bis(dibenzoic) acid. The most efficient peroxide scavengers, N-bornyl and N-leucine methyl ester benzisoselenazol-3(2H)-ones, were further evaluated as cytotoxic agents on four cancer cell lines (MCF-7, HEP G2, HL 6, and DU 145) and normal cell line PNT1A. The highest antiproliferative potential was evaluated for two compounds bearing a 3-methylbutyl carbon chain, N-leucine methyl ester and N-3-methylbutyl benzisoselenazol-3(2H)-ones.
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33
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Thanna S, Goins CM, Knudson SE, Slayden RA, Ronning DR, Sucheck SJ. Thermal and Photoinduced Copper-Promoted C-Se Bond Formation: Synthesis of 2-Alkyl-1,2-benzisoselenazol-3(2H)-ones and Evaluation against Mycobacterium tuberculosis. J Org Chem 2017; 82:3844-3854. [PMID: 28273423 DOI: 10.1021/acs.joc.7b00440] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
2-Alkyl-1,2-benzisoselenazol-3(2H)-ones, represented by ebselen (1a), are being studied intensively for a range of medicinal applications. We describe both a new thermal and photoinduced copper-mediated cross-coupling between potassium selenocyanate (KSeCN) and N-substituted ortho-halobenzamides to form 2-alkyl-1,2-benzisoselenazol-3(2H)-ones containing a C-Se-N bond. The copper ligand (1,10-phenanthroline) facilitates C-Se bond formation during heating via a mechanism that likely involves atom transfer (AT), whereas, in the absence of ligand, photoinduced activation likely proceeds through a single electron transfer (SET) mechanism. A library of 15 2-alkyl-1,2-benzisoselenazol-3(2H)-ones was prepared. One member of the library was azide-containing derivative 1j that was competent to undergo a strain-promoted azide-alkyne cycloaddition. The library was evaluated for inhibition of Mycobacterium tuberculosis (Mtb) growth and Mtb Antigen 85C (Mtb Ag85C) activity. Compound 1f was most potent with a minimal inhibitory concentration (MIC) of 12.5 μg/mL and an Mtb Ag85C apparent IC50 of 8.8 μM.
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Affiliation(s)
- Sandeep Thanna
- Department of Chemistry and Biochemistry, The University of Toledo , 2801 W. Bancroft Street, Toledo, Ohio 43606, United States
| | - Christopher M Goins
- Department of Chemistry and Biochemistry, The University of Toledo , 2801 W. Bancroft Street, Toledo, Ohio 43606, United States
| | - Susan E Knudson
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University , Fort Collins, Colorado 80523, United States
| | - Richard A Slayden
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University , Fort Collins, Colorado 80523, United States
| | - Donald R Ronning
- Department of Chemistry and Biochemistry, The University of Toledo , 2801 W. Bancroft Street, Toledo, Ohio 43606, United States
| | - Steven J Sucheck
- Department of Chemistry and Biochemistry, The University of Toledo , 2801 W. Bancroft Street, Toledo, Ohio 43606, United States
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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.
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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
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35
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Balkrishna SJ, Kumar S, Kumar A, Panini P, Kumar S. Cinchona-Alkaloids Based Isoselenazolones: Synthesis and Their Catalytic Reactivity in Asymmetric Bromolactonization of Alkenoic Acid. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2016. [DOI: 10.1007/s40010-016-0306-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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36
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Patel S, Meenakshi M, Hodage AS, Verma A, Agrawal S, Yadav A, Kumar S. Synthesis and structural characterization of monomeric mercury(ii) selenolate complexes derived from 2-phenylbenzamide ligands. Dalton Trans 2016; 45:4030-40. [DOI: 10.1039/c5dt04356e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The present work describes the synthesis and structural characterization of mercury selenolate complexes derived from 2-phenylbenzamide ligands and their isolation in monomeric form for the first time.
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Affiliation(s)
- Saket Patel
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Meenakshi Meenakshi
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Ananda S. Hodage
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Ajay Verma
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Shailendra Agrawal
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Abhimanyu Yadav
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Sangit Kumar
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
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37
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Shukla R, Chopra D. “Pnicogen bonds” or “chalcogen bonds”: exploiting the effect of substitution on the formation of P⋯Se noncovalent bonds. Phys Chem Chem Phys 2016; 18:13820-9. [DOI: 10.1039/c6cp01703g] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A direct comparison of pnicogen bonds and chalcogen bonds in P⋯Se non-covalent interactions.
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Affiliation(s)
- Rahul Shukla
- Crystallography and Crystal Chemistry Laboratory Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal 462066
- India
| | - Deepak Chopra
- Crystallography and Crystal Chemistry Laboratory Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal 462066
- India
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38
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Shukla R, Chopra D. Exploring the Role of Substitution on the Formation of Se···O/N Noncovalent Bonds. J Phys Chem B 2015; 119:14857-70. [DOI: 10.1021/acs.jpcb.5b08684] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Rahul Shukla
- Crystallography
and Crystal
Chemistry Laboratory Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462066, Madhya Pradesh, India
| | - Deepak Chopra
- Crystallography
and Crystal
Chemistry Laboratory Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462066, Madhya Pradesh, India
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39
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Singh VP, Poon JF, Butcher RJ, Lu X, Mestres G, Ott MK, Engman L. Effect of a Bromo Substituent on the Glutathione Peroxidase Activity of a Pyridoxine-like Diselenide. J Org Chem 2015; 80:7385-95. [DOI: 10.1021/acs.joc.5b00797] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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
| | - Ray J. Butcher
- Department
of Chemistry, Howard University, Washington, D.C. 20059, United States
| | - Xi Lu
- Division
of Applied Materials Science, Department of Engineering Sciences, Uppsala University, SE-751 23 Uppsala, Sweden
| | - Gemma Mestres
- Division
of Applied Materials Science, Department of Engineering Sciences, Uppsala University, SE-751 23 Uppsala, Sweden
| | - Marjam Karlsson Ott
- Division
of Applied Materials Science, Department of Engineering Sciences, Uppsala University, SE-751 23 Uppsala, Sweden
| | - Lars Engman
- Department
of Chemistry−BMC, Uppsala University, Box 576, SE-751 23 Uppsala, Sweden
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40
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Yin Y, Jiao S, Zhang R, Hu X, Shi Z, Huang Z. Construction of a smart microgel glutathione peroxidase mimic based on supramolecular self-assembly. SOFT MATTER 2015; 11:5301-5312. [PMID: 26053236 DOI: 10.1039/c5sm00671f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In an effort to construct smart artificial glutathione peroxidase (GPx) featuring high catalytic activity in an efficient preparation process, an artificial microgel GPx (PPAM-ADA-Te) has been prepared using a supramolecular host-guest self-assembly technique. Herein, 6,6'-telluro-bis(6-deoxy-β-cyclodextrin) (CD-Te-CD) was selected as a tellurium-containing host molecule, which also served as the crosslinker for the scaffold of the supramolecular microgel. And an adamantane-containing block copolymer (PPAM-ADA) was designed and synthesized as a guest building block copolymer. Subsequently, PPAM-ADA-Te was constructed through the self-assembly of CD-Te-CD and PPAM-ADA. The formation of this self-assembled construct was confirmed by dynamic light scattering, NMR, SEM and TEM. Notably, PPAM-ADA-Te not only exhibits a significant temperature responsive catalytic activity, but also features the characteristic saturation kinetics behaviour similar to that of a natural enzyme catalyst. We demonstrate in this paper that both the hydrophobic microenvironment and the crosslinker in this supramolecular microgel network played significant roles in enhancing and altering the temperature responsive catalytic behaviour. The successful construction of PPAM-ADA-Te not only provides a novel method for the preparation of microgel artificial GPx with high catalytic activity but also provides properties suitable for the future development of intelligent antioxidant drugs.
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Affiliation(s)
- Yanzhen Yin
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
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41
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Carroll L, Davies MJ, Pattison DI. Reaction of low-molecular-mass organoselenium compounds (and their sulphur analogues) with inflammation-associated oxidants. Free Radic Res 2015; 49:750-67. [PMID: 25854915 DOI: 10.3109/10715762.2015.1018247] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Selenium is an essential trace element in mammals, with the majority specifically encoded as seleno-L-cysteine into a range of selenoproteins. Many of these proteins play a key role in modulating oxidative stress, via either direct detoxification of biological oxidants, or repair of oxidised residues. Both selenium- and sulphur-containing residues react readily with the wide range of oxidants (including hydrogen peroxide, radicals, singlet oxygen and hypochlorous, hypobromous, hypothiocyanous and peroxynitrous acids) that are produced during inflammation and have been implicated in the development of a range of inflammatory diseases. Whilst selenium has similar properties to sulphur, it typically exhibits greater reactivity with most oxidants, and there are considerable differences in the subsequent reactivity and ease of repair of the oxidised species that are formed. This review discusses the chemistry of low-molecular-mass organoselenium compounds (e.g. selenoethers, diselenides and selenols) with inflammatory oxidants, with a particular focus on the reaction kinetics and product studies, with the differences in reactivity between selenium and sulphur analogues described in the selected examples. These data provide insight into the therapeutic potential of low-molecular-mass selenium-containing compounds to modulate the activity of both radical and molecular oxidants and provide protection against inflammation-induced damage. Progress in their therapeutic development (including modulation of potential selenium toxicity by strategic design) is demonstrated by a brief summary of some recent studies where novel organoselenium compounds have been used as wound healing or radioprotection agents and in the prevention of cardiovascular disease.
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Affiliation(s)
- L Carroll
- The Heart Research Institute , Newtown, Sydney , Australia
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42
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Stankevič M. Diastereoselective desymmetrization of diarylphosphinous acid-borane amides under Birch reduction. Org Biomol Chem 2015; 13:6082-102. [PMID: 25553810 DOI: 10.1039/c4ob02440k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Treatment of diarylphosphinous acid-borane amides possessing chiral amido functionality with an alkali metal solution in liquid ammonia induced a preferential dearomatization of one aryl substituent at phosphorus leading to the formation of non-equimolar amounts of diastereomers. Diastereoselectivity of dearomatization depends strongly on the structure of a chiral auxiliary.
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Affiliation(s)
- Marek Stankevič
- Department of Organic Chemistry, Marie Curie-Skłodowska University, 33 Gliniana Street, 20-614 Lublin, Poland.
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43
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Mitogen-activated protein kinase Hog1 is activated in response to curcumin exposure in the budding yeast Saccharomyces cerevisiae. BMC Microbiol 2014; 14:317. [PMID: 25523922 PMCID: PMC4275933 DOI: 10.1186/s12866-014-0317-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 12/05/2014] [Indexed: 11/28/2022] Open
Abstract
Background Curcumin (CUR), an active polyphenol derived from the spice turmeric, has been traditionally used for centuries in ancient Indian medicine to treat a number of diseases. The physiological effects of CUR have been shown to be diverse; however, the target molecules and pathways that CUR affects have yet to be fully described. Results Here, we demonstrate for the first time that the budding yeast mitogen-activated protein kinase (MAPK) Hog1 is essential for the response to CUR. Moreover, CUR-induced Hog1 phosphorylation was rescued by supplementation of iron to the growth medium. Hog1 was rapidly phosphorylated upon CUR treatment, but unlike the response to hyperosmotic shock (0.8 M NaCl), it remains activated for an extended period of time. A detailed analysis of HOG pathway mutants revealed that Pbs2p, Ptc2p, and Ssk2p are required for optimal CUR-induced Hog1 phosphorylation. We also observed a Hog1 dependent transcriptional response to CUR treatment that involved the up-regulation of glycerol-3-phosphate dehydrogenase 1 (GPD1), a factor that is essential for the hyperosmotic stress response. Conclusions Our present finding revealed the role of Hog1 MAPK in regulation of CUR-induced transcriptional response. We anticipate that our finding will enhance the understanding on the molecular mode of action of CUR on S. cerevisiae.
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44
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Pacuła AJ, Ścianowski J, Aleksandrzak KB. Highly efficient synthesis and antioxidant capacity of N-substituted benzisoselenazol-3(2H)-ones. RSC Adv 2014. [DOI: 10.1039/c4ra08631g] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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45
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Baranwal S, Azad GK, Singh V, Tomar RS. Signaling of chloroquine-induced stress in the yeast Saccharomyces cerevisiae requires the Hog1 and Slt2 mitogen-activated protein kinase pathways. Antimicrob Agents Chemother 2014; 58:5552-66. [PMID: 25022582 PMCID: PMC4135872 DOI: 10.1128/aac.02393-13] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 06/28/2014] [Indexed: 01/24/2023] Open
Abstract
Chloroquine (CQ) has been under clinical use for several decades, and yet little is known about CQ sensing and signaling mechanisms or about their impact on various biological pathways. We employed the budding yeast Saccharomyces cerevisiae as a model organism to study the pathways targeted by CQ. Our screening with yeast mutants revealed that it targets histone proteins and histone deacetylases (HDACs). Here, we also describe the novel role of mitogen-activated protein kinases Hog1 and Slt2, which aid in survival in the presence of CQ. Cells deficient in Hog1 or Slt2 are found to be CQ hypersensitive, and both proteins were phosphorylated in response to CQ exposure. CQ-activated Hog1p is translocated to the nucleus and facilitates the expression of GPD1 (glycerol-3-phosphate dehydrogenase), which is required for the synthesis of glycerol (one of the major osmolytes). Moreover, cells treated with CQ exhibited an increase in intracellular reactive oxygen species (ROS) levels and the effects were rescued by addition of reduced glutathione to the medium. The deletion of SOD1, the superoxide dismutase in yeast, resulted in hypersensitivity to CQ. We have also observed P38 as well as P42/44 phosphorylation in HEK293T human cells upon exposure to CQ, indicating that the kinds of responses generated in yeast and human cells are similar. In summary, our findings define the multiple biological pathways targeted by CQ that might be useful for understanding the toxicity modulated by this pharmacologically important molecule.
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Affiliation(s)
- Shivani Baranwal
- Laboratory of Chromatin Biology, Department of Biological Sciences, Indian Institute of Science Education and Research, Bhopal, India
| | - Gajendra Kumar Azad
- Laboratory of Chromatin Biology, Department of Biological Sciences, Indian Institute of Science Education and Research, Bhopal, India
| | - Vikash Singh
- Laboratory of Chromatin Biology, Department of Biological Sciences, Indian Institute of Science Education and Research, Bhopal, India
| | - Raghuvir S Tomar
- Laboratory of Chromatin Biology, Department of Biological Sciences, Indian Institute of Science Education and Research, Bhopal, India
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Singh VP, Poon JF, Butcher RJ, Engman L. Pyridoxine-Derived Organoselenium Compounds with Glutathione Peroxidase-Like and Chain-Breaking Antioxidant Activity. Chemistry 2014; 20:12563-71. [DOI: 10.1002/chem.201403229] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Indexed: 11/07/2022]
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Anti-cancer drug KP1019 induces Hog1 phosphorylation and protein ubiquitylation in Saccharomyces cerevisiae. Eur J Pharmacol 2014; 736:77-85. [DOI: 10.1016/j.ejphar.2014.04.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 04/22/2014] [Accepted: 04/23/2014] [Indexed: 01/29/2023]
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Azad GK, Tomar RS. Ebselen, a promising antioxidant drug: mechanisms of action and targets of biological pathways. Mol Biol Rep 2014; 41:4865-79. [DOI: 10.1007/s11033-014-3417-x] [Citation(s) in RCA: 196] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Azad GK, Singh V, Tomar RS. Assessment of the biological pathways targeted by isocyanate using N-succinimidyl N-methylcarbamate in budding yeast Saccharomyces cerevisiae. PLoS One 2014; 9:e92993. [PMID: 24664350 PMCID: PMC3963962 DOI: 10.1371/journal.pone.0092993] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 02/27/2014] [Indexed: 02/05/2023] Open
Abstract
Isocyanates, a group of low molecular weight aromatic and aliphatic compounds possesses the functional isocyanate group. They are highly toxic in nature hence; we used N-succinimidyl N-methylcarbamate (NSNM), a surrogate chemical containing a functional isocyanate group to understand the mode of action of this class of compounds. We employed budding yeast Saccharomyces cerevisiae as a model organism to study the pathways targeted by NSNM. Our screening with yeast mutants revealed that it affects chromatin, DNA damage response, protein-ubiquitylation and chaperones, oxidative stress, TOR pathway and DNA repair processes. We also show that NSNM acts as an epigenetic modifier as its treatment causes reduction in global histone acetylation and formation of histone adducts. Cells treated with NSNM exhibited increase in mitochondrial membrane potential as well as intracellular ROS levels and the effects were rescued by addition of reduced glutathione to the medium. We also report that deletion of SOD1 and SOD2, the superoxide dismutase in Saccharomyces cerevisiae displayed hypersensitivity to NSNM. Furthermore, NSNM treatment causes rapid depletion of total glutathione and reduced glutathione. We also demonstrated that NSNM induces degradation of Sml1, a ribonucleotide reductase inhibitor involved in regulating dNTPs production. In summary, we define the various biological pathways targeted by isocyanates.
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Affiliation(s)
- Gajendra Kumar Azad
- Laboratory of Chromatin Biology, Department of Biological Sciences, Indian Institute of Science Education and Research, Bhopal, India
| | - Vikash Singh
- Laboratory of Chromatin Biology, Department of Biological Sciences, Indian Institute of Science Education and Research, Bhopal, India
| | - Raghuvir S. Tomar
- Laboratory of Chromatin Biology, Department of Biological Sciences, Indian Institute of Science Education and Research, Bhopal, India
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Anti-cancer drug KP1019 modulates epigenetics and induces DNA damage response inSaccharomyces cerevisiae. FEBS Lett 2014; 588:1044-52. [DOI: 10.1016/j.febslet.2014.02.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Revised: 01/28/2014] [Accepted: 02/05/2014] [Indexed: 12/11/2022]
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