1
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Lee SH, Lim YJ, Kim C, Kim YE, Cho H. Studies on the selective synthesis of diorganyl diselenides using potassium hydroxide and mechanistic investigations of the reaction pathway. Org Biomol Chem 2024; 22:4309-4317. [PMID: 38717394 DOI: 10.1039/d4ob00437j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Methods of selectively synthesizing diorganyl diselenides (R-Se-Se-R) without using harmful reducing agents are presented. We optimized the reaction conditions for the selective formation of the diselenide dianion (Se22-) and the corresponding diorganyl diselenides using basic reagents (e.g., KOH), while suppressing the formation of side products, such as diorganyl selenides (R-Se-R) or multiselenides (R-Sen-R; n ≥ 3). Furthermore, we have suggested and examined the reaction pathways responsible for the formation of the desired diorganyl diselenides 1 and side products 2 and 3. Consequently, the selective synthesis of diverse diorganyl diselenides was achieved with modest to excellent yields (33-99%) using various organyl halides under optimized conditions. The results provide a practical and efficient synthetic method for diorganyl diselenides as a representative class of organoselenium compounds.
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Affiliation(s)
- Sang Hyup Lee
- College of Pharmacy, Duksung Women's University, 33, Samyangro 144-gil, Dobong-gu, Seoul 01369, Republic of Korea.
| | - Yoo Jin Lim
- College of Pharmacy, Duksung Women's University, 33, Samyangro 144-gil, Dobong-gu, Seoul 01369, Republic of Korea.
| | - Chorong Kim
- College of Pharmacy, Duksung Women's University, 33, Samyangro 144-gil, Dobong-gu, Seoul 01369, Republic of Korea.
| | - Ye Eun Kim
- College of Pharmacy, Duksung Women's University, 33, Samyangro 144-gil, Dobong-gu, Seoul 01369, Republic of Korea.
| | - Hyunsung Cho
- College of Pharmacy, Duksung Women's University, 33, Samyangro 144-gil, Dobong-gu, Seoul 01369, Republic of Korea.
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2
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Sonego JM, de Diego SI, Szajnman SH, Gallo-Rodriguez C, Rodriguez JB. Organoselenium Compounds: Chemistry and Applications in Organic Synthesis. Chemistry 2023; 29:e202300030. [PMID: 37378970 DOI: 10.1002/chem.202300030] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 06/18/2023] [Accepted: 06/28/2023] [Indexed: 06/29/2023]
Abstract
Selenium, originally described as a toxin, turns out to be a crucial trace element for life that appears as selenocysteine and its dimer, selenocystine. From the point of view of drug developments, selenium-containing drugs are isosteres of sulfur and oxygen with the advantage that the presence of the selenium atom confers antioxidant properties and high lipophilicity, which would increase cell membrane permeation leading to better oral bioavailability. In this article, we have focused on the relevant features of the selenium atom, above all, the corresponding synthetic approaches to access a variety of organoselenium molecules along with the proposed reaction mechanisms. The preparation and biological properties of selenosugars, including selenoglycosides, selenonucleosides, selenopeptides, and other selenium-containing compounds will be treated. We have attempted to condense the most important aspects and interesting examples of the chemistry of selenium into a single article.
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Affiliation(s)
- Juan M Sonego
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
| | - Sheila I de Diego
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
| | - Sergio H Szajnman
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
| | - Carola Gallo-Rodriguez
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EHA, Buenos Aires, Argentina
| | - Juan B Rodriguez
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
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3
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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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4
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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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5
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Macegoniuk K, Tabor W, Mazzei L, Cianci M, Giurg M, Olech K, Burda-Grabowska M, Kaleta R, Grabowiecka A, Mucha A, Ciurli S, Berlicki Ł. Optimized Ebselen-Based Inhibitors of Bacterial Ureases with Nontypical Mode of Action. J Med Chem 2023; 66:2054-2063. [PMID: 36661843 PMCID: PMC9923736 DOI: 10.1021/acs.jmedchem.2c01799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Screening of 25 analogs of Ebselen, diversified at the N-aromatic residue, led to the identification of the most potent inhibitors of Sporosarcina pasteurii urease reported to date. The presence of a dihalogenated phenyl ring caused exceptional activity of these 1,2-benzisoselenazol-3(2H)-ones, with Ki value in a low picomolar range (<20 pM). The affinity was attributed to the increased π-π and π-cation interactions of the dihalogenated phenyl ring with αHis323 and αArg339 during the initial step of binding. Complementary biological studies with selected compounds on the inhibition of ureolysis in whole Proteus mirabilis cells showed a very good potency (IC50 < 25 nM in phosphate-buffered saline (PBS) buffer and IC90 < 50 nM in a urine model) for monosubstituted N-phenyl derivatives. The crystal structure of S. pasteurii urease inhibited by one of the most active analogs revealed the recurrent selenation of the Cys322 thiolate, yielding an unprecedented Cys322-S-Se-Se chemical moiety.
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Affiliation(s)
- Katarzyna Macegoniuk
- Department
of Bioorganic Chemistry, Wrocław University
of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Wojciech Tabor
- Department
of Bioorganic Chemistry, Wrocław University
of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Luca Mazzei
- Laboratory
of Bioinorganic Chemistry, Department of Pharmacy and Biotechnology
(FaBiT), University of Bologna, Viale Giuseppe Fanin 40, 40138 Bologna, Italy
| | - Michele Cianci
- Department
of Agricultural, Food and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche 10, 60131 Ancona, Italy
| | - Mirosław Giurg
- Department
of Organic and Medicinal Chemistry, Wrocław
University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Kamila Olech
- Department
of Organic and Medicinal Chemistry, Wrocław
University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Małgorzata Burda-Grabowska
- Department
of Organic and Medicinal Chemistry, Wrocław
University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Rafał Kaleta
- Department
of Organic and Medicinal Chemistry, Wrocław
University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Agnieszka Grabowiecka
- Department
of Bioorganic Chemistry, Wrocław University
of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Artur Mucha
- Department
of Bioorganic Chemistry, Wrocław University
of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Stefano Ciurli
- Laboratory
of Bioinorganic Chemistry, Department of Pharmacy and Biotechnology
(FaBiT), University of Bologna, Viale Giuseppe Fanin 40, 40138 Bologna, Italy
| | - Łukasz Berlicki
- Department
of Bioorganic Chemistry, Wrocław University
of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland,. Phone: +48 71 320
3344. Fax: +48 71 320 2427
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6
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Guo T, Li Z, Bi L, Fan L, Zhang P. Recent advances in organic synthesis applying elemental selenium. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132752] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Upadhyay A, Saurav KV, Varghese EL, Hodage AS, Paul A, Awasthi MK, Singh SK, Kumar S. Proton reduction by a bimetallic zinc selenolate electrocatalyst. RSC Adv 2022; 12:3801-3808. [PMID: 35425408 PMCID: PMC8981091 DOI: 10.1039/d1ra08614f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 01/18/2022] [Indexed: 11/21/2022] Open
Abstract
We report the synthesis and structural characterization of a bimetallic zinc selenolate complex consisting of a redox silent zinc metal ion and a trifunctional ligand that electrocatalyzes the reduction of protons into hydrogen gas.
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Affiliation(s)
- Aditya Upadhyay
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - K. V. Saurav
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Evelin Lilly Varghese
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Ananda S. Hodage
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Amit Paul
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Mahendra Kumar Awasthi
- Department of Chemistry, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore 453552, Madhya Pradesh, India
| | - Sanjay Kumar Singh
- Department of Chemistry, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore 453552, Madhya Pradesh, India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal By-Pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
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8
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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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9
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Upadhyay A, Kumar Jha R, Batabyal M, Dutta T, Koner AL, Kumar S. Janus -faced oxidant and antioxidant profiles of organo diselenides. Dalton Trans 2021; 50:14576-14594. [PMID: 34590653 DOI: 10.1039/d1dt01565f] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To date, organoseleniums are pre-eminent for peroxide decomposition and radical quenching antioxidant activities. On the contrary, here, a series of Janus-faced aminophenolic diselenides have been prepared from substituted 2-iodoaniline and selenium powder using copper-catalyzed methodology. Subsequently, condensation with substituted salicylaldehyde afforded the Schiff base, which on reduction, yielded the desired substituted aminophenolic diselenides in 72%-88% yields. The generation of reactive oxygen species (ROS) from oxygen gas by the synthesized aminophenolic diselenides was studied by analyzing the oxidation of dichlorofluorescein diacetate (DCFDA) dye and para-nitro-thiophenol by fluorescence and UV-Visible spectroscopic methods. Furthermore, density functional theory calculations and crystal structure analysis revealed the role of functional amine and hydroxyl sites present in the Janus-faced organoselenium catalyst for the activation of molecular oxygen, where NH and phenolic groups bring the oxygen molecule close to the catalyst by N-H⋯O and O-H⋯O intermolecular interactions. Additionally, these functionalities stabilize the selenium-centered radical in the formed transition states. Antioxidant activities of the synthesized diselenides have been explored as the catalyst for the decomposition of hydrogen peroxide using benzenethiol sacrificial co-reductant by a well-established thiol assay. Radical quenching antioxidant activity was studied by the quenching of DPPH radicals at 516 nm by UV-Visible spectroscopy. The structure activity correlation suggests that the electron-rich phenol and electron-rich and sterically hindered selenium center enhance the oxidizing property of the aminophenolic diselenides. Janus-faced diselenides were also evaluated for their cytotoxic effect on HeLa cancer cells via MTT assay, which suggests that the compounds are effective at 15-18 μM concentration against cancer cells. Moreover, the combination with therapeutic anticancer drugs Erlotinib and Doxorubicin showed promising cytotoxicity at the nanomolar concentration (8-28 nM), which is sufficient to suppress the growth of the cancer cells.
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Affiliation(s)
- Aditya Upadhyay
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhauri By-pass Road, Bhopal 462066, Madhya Pradesh, India.
| | - Raushan Kumar Jha
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhauri By-pass Road, Bhopal 462066, Madhya Pradesh, India.
| | - Monojit Batabyal
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhauri By-pass Road, Bhopal 462066, Madhya Pradesh, India.
| | - Tanoy Dutta
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhauri By-pass Road, Bhopal 462066, Madhya Pradesh, India.
| | - Apurba Lal Koner
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhauri By-pass Road, Bhopal 462066, Madhya Pradesh, India.
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhauri By-pass Road, Bhopal 462066, Madhya Pradesh, India.
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10
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Tiekink ER. Supramolecular aggregation patterns featuring Se⋯N secondary-bonding interactions in mono-nuclear selenium compounds: A comparison with their congeners. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214031] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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11
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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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12
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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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13
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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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14
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Dias RDS, Cervo R, Siqueira FDS, Campos MMA, Lang ES, Tirloni B, Schumacher RF, Cargnelutti R. Synthesis and antimicrobial evaluation of coordination compounds containing 2,2′‐bis(3‐aminopyridyl) diselenide as ligand. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5750] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Renne de Sousa Dias
- Departamento de Química, Laboratório de Materiais InorgânicosUniversidade Federal de Santa Maria Santa Maria RS 97105–900 Brazil
| | - Rodrigo Cervo
- Departamento de Química, Laboratório de Materiais InorgânicosUniversidade Federal de Santa Maria Santa Maria RS 97105–900 Brazil
| | - Fallon dos Santos Siqueira
- Programa de Pós‐graduação em Ciências Farmacêuticas, Departamento de Análises Clínicas e ToxicológicasUniversidade Federal de Santa Maria Santa Maria RS 97105–900 Brazil
| | - Marli Matiko Anraku Campos
- Programa de Pós‐graduação em Ciências Farmacêuticas, Departamento de Análises Clínicas e ToxicológicasUniversidade Federal de Santa Maria Santa Maria RS 97105–900 Brazil
| | - Ernesto Schulz Lang
- Departamento de Química, Laboratório de Materiais InorgânicosUniversidade Federal de Santa Maria Santa Maria RS 97105–900 Brazil
| | - Bárbara Tirloni
- Departamento de Química, Laboratório de Materiais InorgânicosUniversidade Federal de Santa Maria Santa Maria RS 97105–900 Brazil
| | - Ricardo Frederico Schumacher
- Departamento de Química, Laboratório de Materiais InorgânicosUniversidade Federal de Santa Maria Santa Maria RS 97105–900 Brazil
| | - Roberta Cargnelutti
- Departamento de Química, Laboratório de Materiais InorgânicosUniversidade Federal de Santa Maria Santa Maria RS 97105–900 Brazil
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15
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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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16
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Filatov V, Kukushkin M, Kuznetsova J, Skvortsov D, Tafeenko V, Zyk N, Majouga A, Beloglazkina E. Synthesis of 1,3-diaryl-spiro[azetidine-2,3′-indoline]-2′,4-dionesviathe Staudinger reaction:cis- ortrans-diastereoselectivity with different addition modes. RSC Adv 2020; 10:14122-14133. [PMID: 35498462 PMCID: PMC9051608 DOI: 10.1039/d0ra02374d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 03/30/2020] [Indexed: 01/31/2023] Open
Abstract
A new synthetic approach for realizing biologically relevant bis-aryl spiro[azetidine-2,3′-indoline]-2′,4-diones was developed based on Staudinger ketene–imine cycloaddition through the one-pot reaction of substituted acetic acids and Schiff bases in the presence of oxalyl chloride and an organic base. A series of [azetidine-2,3′-indoline]-2′,4-diones were synthesized using this method. For comparison, the same compounds were obtained using a known technique, where ketene is generated from pre-synthesized acyl chloride. It was shown that the use of oxalyl chloride for ketene generation in the one-pot reaction at room temperature allows for the reversal of the diastereoselectivity of spiro-lactam formation, unlike previously described procedures. Two experimental techniques of the ketene–imine Staudinger reaction allowed different diastereomers of spiro-indolinone-β-lactams to be obtained.![]()
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Affiliation(s)
- Vadim Filatov
- Moscow State University
- Department of Chemistry
- Moscow 119991
- Russia
| | - Maksim Kukushkin
- Moscow State University
- Department of Chemistry
- Moscow 119991
- Russia
| | | | - Dmitry Skvortsov
- Moscow State University
- Department of Chemistry
- Moscow 119991
- Russia
- Skolkovo Institute of Science and Technology
| | - Viktor Tafeenko
- Moscow State University
- Department of Chemistry
- Moscow 119991
- Russia
| | - Nikolay Zyk
- Moscow State University
- Department of Chemistry
- Moscow 119991
- Russia
| | - Alexander Majouga
- Moscow State University
- Department of Chemistry
- Moscow 119991
- Russia
- National University of Science and Technology “MISiS”
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17
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Kadu R, Batabyal M, Kadyan H, Koner AL, Kumar S. An efficient copper-catalyzed synthesis of symmetrical bis(N-arylbenzamide) selenides and their conversion to hypervalent spirodiazaselenuranes and hydroxy congeners. Dalton Trans 2019; 48:7249-7260. [PMID: 30747185 DOI: 10.1039/c8dt04832k] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A copper catalyzed efficient synthetic method has been developed to access bis(N-arylbenzamide) selenides from 2-halo-N-arylbenzamide substrates and disodium selenide in HMPA at 110 °C. The developed protocol tolerates substituents in both N-aryl and benzamide rings of the 2-halobenzamide substrates and provides an array of bis(N-arylbenzamide) selenides in practical yields. The resulting selenides were transformed into hypervalent spirodiazaselenuranes by oxidation using aqueous hydrogen peroxide. (N-(1-Naphthyl)) spirodiazaselenurane is also structurally characterized by a single crystal X-ray study. Hydroxy-substituted spiroselenuranes have been prepared by careful demethylation of methoxy-substituted selenides followed by oxidation by hydrogen peroxide. Antioxidant properties for the decomposition of hydrogen peroxide and for the deactivation of radicals of hydroxy-substituted spiroselenuranes have been studied by the thiol assay and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. Both hydroxy-substituted spiroselenuranes exhibit dual mimic functions of glutathione peroxidase (GPx) selenoenzyme and α-tocopherol for decomposition of hydrogen peroxide and deactivation of radicals, respectively.
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Affiliation(s)
- Rahul Kadu
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal-462066, India.
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18
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Rathore V, Upadhyay A, Kumar S. An Organodiselenide with Dual Mimic Function of Sulfhydryl Oxidases and Glutathione Peroxidases: Aerial Oxidation of Organothiols to Organodisulfides. Org Lett 2018; 20:6274-6278. [PMID: 30247928 DOI: 10.1021/acs.orglett.8b02756] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A novel organodiselenide, which mimics sulfhydryl oxidases and glutathione peroxidase (GPx) enzymes for oxidation of thiols by oxygen and hydrogen peroxide, respectively, into disulfides has been presented. The developed catalyst oxidizes an array of organothiols into respective disulfides in practical yields by using aerial O2 to avoid any reagents/additives, base, and light source. The synthesized diselenide also catalyzes the reduction of hydrogen peroxide into water by following the GPx enzymatic catalytic cycle with a reduction rate of 49.65 ± 3.7 μM·min-1.
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Affiliation(s)
- Vandana Rathore
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) Bhopal , Bhopal By-pass Road , Bhauri, Bhopal 462 066 , Madhya Pradesh India
| | - Aditya Upadhyay
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) Bhopal , Bhopal By-pass Road , Bhauri, Bhopal 462 066 , Madhya Pradesh India
| | - Sangit Kumar
- Department of Chemistry , Indian Institute of Science Education and Research (IISER) Bhopal , Bhopal By-pass Road , Bhauri, Bhopal 462 066 , Madhya Pradesh India
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19
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Kaur N, Jangid NK, Sharma V. Metal- and nonmetal-catalyzed synthesis of five-membered S,N-heterocycles. J Sulphur Chem 2017. [DOI: 10.1080/17415993.2017.1415338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, India
| | | | - Vivek Sharma
- Department of Chemistry, Banasthali University, Banasthali, India
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20
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Giurg M, Gołąb A, Suchodolski J, Kaleta R, Krasowska A, Piasecki E, Piętka-Ottlik M. Reaction of bis[(2-chlorocarbonyl)phenyl] Diselenide with Phenols, Aminophenols, and Other Amines towards Diphenyl Diselenides with Antimicrobial and Antiviral Properties. Molecules 2017; 22:molecules22060974. [PMID: 28604620 PMCID: PMC6152648 DOI: 10.3390/molecules22060974] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 05/30/2017] [Accepted: 06/02/2017] [Indexed: 12/16/2022] Open
Abstract
A reaction of bis[(2-chlorocarbonyl)phenyl] diselenide with various mono and bisnucleophiles such as aminophenols, phenols, and amines have been studied as a convenient general route to a series of new antimicrobial and antiviral diphenyl diselenides. The compounds, particularly bis[2-(hydroxyphenylcarbamoyl)]phenyl diselenides and reference benzisoselenazol-3(2H)-ones, exhibited high antimicrobial activity against Gram-positive bacterial species (Enterococcus spp., Staphylococcus spp.), and some compounds were also active against Gram-negative E. coli and fungi (Candida spp., A. niger). The majority of compounds demonstrated high activity against human herpes virus type 1 (HHV-1) and moderate activity against encephalomyocarditis virus (EMCV), while they were generally inactive against vesicular stomatitis virus (VSV).
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Affiliation(s)
- Mirosław Giurg
- Department of Organic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
| | - Anna Gołąb
- Department of Organic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
| | - Jakub Suchodolski
- Department of Biotransformation, Faculty of Biotechnology, University of Wrocław, Joliot-Curie 14a, 50-383 Wrocław, Poland.
| | - Rafał Kaleta
- Department of Organic Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
| | - Anna Krasowska
- Department of Biotransformation, Faculty of Biotechnology, University of Wrocław, Joliot-Curie 14a, 50-383 Wrocław, Poland.
| | - Egbert Piasecki
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland.
| | - Magdalena Piętka-Ottlik
- Department of Organic and Pharmaceutical Technology, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
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21
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Banerjee B, Koketsu M. Recent developments in the synthesis of biologically relevant selenium-containing scaffolds. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.03.008] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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22
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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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23
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Iwasaki M, Miki N, Tsuchiya Y, Nakajima K, Nishihara Y. Synthesis of Benzoisoselenazolone Derivatives by Nickel-Catalyzed Dehydrogenative Direct Selenation of C(sp2)–H Bonds with Elemental Selenium in Air. Org Lett 2017; 19:1092-1095. [DOI: 10.1021/acs.orglett.7b00116] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Masayuki Iwasaki
- Research
Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Natsumi Miki
- Graduate
School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Yuta Tsuchiya
- Graduate
School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Kiyohiko Nakajima
- Department
of Chemistry, Aichi University of Education, Igaya, Kariya 448-8542, Japan
| | - Yasushi Nishihara
- Research
Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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24
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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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25
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Elsherbini M, Hamama WS, Zoorob HH. Recent advances in the chemistry of selenium-containing heterocycles: Five-membered ring systems. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.01.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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26
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Kumar S, Yan J, Poon JF, Singh VP, Lu X, Karlsson Ott M, Engman L, Kumar S. Multifunctional Antioxidants: Regenerable Radical-Trapping and Hydroperoxide-Decomposing Ebselenols. Angew Chem Int Ed Engl 2016; 55:3729-33. [DOI: 10.1002/anie.201510947] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 01/11/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Shailesh Kumar
- Department of Chemistry; Indian Institute of Science Education and Research (IISER); Bhopal- 462066 India
| | - Jiajie Yan
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Jia-fei Poon
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Vijay P. Singh
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Xi Lu
- Division of Applied Materials Science; Department of Engineering Sciences; Uppsala University; Sweden
| | - Marjam Karlsson Ott
- Division of Applied Materials Science; Department of Engineering Sciences; Uppsala University; Sweden
| | - Lars Engman
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Sangit Kumar
- Department of Chemistry; Indian Institute of Science Education and Research (IISER); Bhopal- 462066 India
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27
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Kumar S, Yan J, Poon JF, Singh VP, Lu X, Karlsson Ott M, Engman L, Kumar S. Multifunctional Antioxidants: Regenerable Radical-Trapping and Hydroperoxide-Decomposing Ebselenols. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510947] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Shailesh Kumar
- Department of Chemistry; Indian Institute of Science Education and Research (IISER); Bhopal- 462066 India
| | - Jiajie Yan
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Jia-fei Poon
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Vijay P. Singh
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Xi Lu
- Division of Applied Materials Science; Department of Engineering Sciences; Uppsala University; Sweden
| | - Marjam Karlsson Ott
- Division of Applied Materials Science; Department of Engineering Sciences; Uppsala University; Sweden
| | - Lars Engman
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Sangit Kumar
- Department of Chemistry; Indian Institute of Science Education and Research (IISER); Bhopal- 462066 India
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28
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Sharma N, Kumar S, Maurya IK, Bhasin KK, Verma A, Wangoo N, Bhasin AKK, Mehta SK, Kumar S, Sharma RK. Synthesis, structural analysis, antimicrobial evaluation and synergistic studies of imidazo[1,2-a]pyrimidine chalcogenides. RSC Adv 2016. [DOI: 10.1039/c6ra24020h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis and structural analysis of novel imidazo[1,2-a]pyrimidine chalcogenides exhibiting effective antimicrobial activity and synergistic effects with known antibiotics have been reported.
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Affiliation(s)
- Nidhi Sharma
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Sanjeev Kumar
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Indresh K. Maurya
- Department of Microbial Biotechnology
- Panjab University
- Chandigarh
- India
| | - K. K. Bhasin
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Ajay Verma
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India
| | - Nishima Wangoo
- Department of Applied Sciences
- University Institute of Engineering and Technology (UIET)
- Panjab University
- Chandigarh
- India
| | - Aman K. K. Bhasin
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - S. K. Mehta
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Sangit Kumar
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India
| | - Rohit K. Sharma
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
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29
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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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30
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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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31
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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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32
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Synthesis, characterization, and structure of trans-3,4-dihydroxy-1-selenolane {DHS(OH)2} substituted derivatives. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.03.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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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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34
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35
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Bhakuni BS, Yadav A, Kumar S, Patel S, Sharma S, Kumar S. KOtBu-Mediated Synthesis of Dimethylisoindolin-1-ones and Dimethyl-5-phenylisoindolin-1-ones: Selective C–C Coupling of an Unreactive Tertiary sp3 C–H Bond. J Org Chem 2014; 79:2944-54. [DOI: 10.1021/jo402776u] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Bhagat Singh Bhakuni
- Department
of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Indore By-pass Road, Bhauri, Bhopal, Madhya Pradesh, India 462 066
| | - Abhimanyu Yadav
- Department
of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Indore By-pass Road, Bhauri, Bhopal, Madhya Pradesh, India 462 066
| | - Shailesh Kumar
- Department
of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Indore By-pass Road, Bhauri, Bhopal, Madhya Pradesh, India 462 066
| | - Saket Patel
- Department
of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Indore By-pass Road, Bhauri, Bhopal, Madhya Pradesh, India 462 066
| | - Shubham Sharma
- Department
of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Indore By-pass Road, Bhauri, Bhopal, Madhya Pradesh, India 462 066
| | - Sangit Kumar
- Department
of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Indore By-pass Road, Bhauri, Bhopal, Madhya Pradesh, India 462 066
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36
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Crystal Structure Studies on Some of Benzamide Ring Substituted Isoselenazolones and Symmetric Diaryl Monoselenides Derived from Benzamides. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2014. [DOI: 10.1007/s40010-014-0129-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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37
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Yu JT, Guo H, Yi Y, Fei H, Jiang Y. The Chan-Lam Reaction of Chalcogen Elements Leading to Aryl Chalcogenides. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300853] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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38
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Balkrishna SJ, Hodage AS, Kumar S, Panini P, Kumar S. Sensitive and regenerable organochalcogen probes for the colorimetric detection of thiols. RSC Adv 2014. [DOI: 10.1039/c4ra00381k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Isothiazolone and isoselenazolone based colorimetric probes for the detection of thiols have been reported. A regenerable probe for the detection of organothiols is developed from isoselenazolone. Both of these probes possess higher selectivity for aromatic thiols, cysteine and glutathione.
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Affiliation(s)
- Shah Jaimin Balkrishna
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal, India
| | - Ananda S. Hodage
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal, India
| | - Shailesh Kumar
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal, India
| | - Piyush Panini
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal, India
| | - Sangit Kumar
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal, India
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Balkrishna SJ, Kumar S, Azad GK, Bhakuni BS, Panini P, Ahalawat N, Tomar RS, Detty MR, Kumar S. An ebselen like catalyst with enhanced GPx activity via a selenol intermediate. Org Biomol Chem 2014; 12:1215-9. [DOI: 10.1039/c4ob00027g] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Benzamide ring-substituted, quinine-derived ebselen analogue is synthesized which exists in selenol form upon addition of PhSH. It catalyses oxidation of PhSH with H2O2 faster (103-fold) than ebselen.
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Affiliation(s)
- Shah Jaimin Balkrishna
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal (IISER)
- Bhopal, India
| | - Shailesh Kumar
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal (IISER)
- Bhopal, India
| | - Gajendra Kumar Azad
- Department of Biological Sciences
- Indian Institute of Science Education and Research Bhopal (IISER)
- Bhopal, India
| | - Bhagat Singh Bhakuni
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal (IISER)
- Bhopal, India
| | - Piyush Panini
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal (IISER)
- Bhopal, India
| | - Navjeet Ahalawat
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal (IISER)
- Bhopal, India
| | - Raghuvir Singh Tomar
- Department of Biological Sciences
- Indian Institute of Science Education and Research Bhopal (IISER)
- Bhopal, India
| | - Michael R. Detty
- Department of Chemistry
- University at Buffalo
- The State University of New York
- , USA
| | - Sangit Kumar
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal (IISER)
- Bhopal, India
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40
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Kumar A, Bhakuni BS, Prasad CD, Kumar S, Kumar S. Potassium tert-butoxide-mediated synthesis of unsymmetrical diaryl ethers, sulfides and selenides from aryl bromides. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.04.113] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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41
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Evaluation of in vitro antioxidant effect of new mono and diselenides. Toxicol In Vitro 2013; 27:1433-9. [PMID: 23499633 DOI: 10.1016/j.tiv.2013.03.001] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 02/28/2013] [Accepted: 03/02/2013] [Indexed: 12/19/2022]
Abstract
This study was designed to examine the antioxidant activity in vitro of novel mono- and diselenide compounds. We compared whether the formation of p-methyl-selenol from compounds 1-phenyl-3-(p-tolylselanyl)propan-2-amine (C1) and 1,2-dip-tolyldiselenide (C4) and o-methoxy-selenol from compounds 1-(2-methoxyphenylselanyl)-3-phenylpropan-2-amine (C2) and 1,2-bis(2-methoxyphenyl)diselenide (C3) may be involved in their antioxidant effects. The compounds were tested against Fe(II) and sodium nitroprusside (SNP)-induced lipid peroxidation in rat brain and liver homogenates. Likewise, the antioxidant capacity of the compounds was assessed by their ability to decolorize the DPPH radical as well as the Fe(II) chelating assay through the reduction of molybdenum(VI) (Mo6+) to molybdenum(V) (Mo5+). This colorimetric assay was also used to quantify thiol peroxidase (GPx) and oxidase activity and thioredoxin reductase (TrxR) activity. The results showed that the novel selenide compounds inhibit the thiobarbituric acid reactive species (TBARS) induced by different pro-oxidants, but the monoselenides effects were significant only at concentrations higher than the concentrations of the diselenides. Similarly, the total antioxidant activity was higher in the diselenides. Moreover, GPx and TrxR activity was only observed for the diselenides, which indicates that these compounds are more stable selenol molecules than monoselenides.
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42
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Prasad CD, Balkrishna SJ, Kumar A, Bhakuni BS, Shrimali K, Biswas S, Kumar S. Transition-Metal-Free Synthesis of Unsymmetrical Diaryl Chalcogenides from Arenes and Diaryl Dichalcogenides. J Org Chem 2013; 78:1434-43. [DOI: 10.1021/jo302480j] [Citation(s) in RCA: 154] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ch Durga Prasad
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, MP
462 023, India
| | - Shah Jaimin Balkrishna
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, MP
462 023, India
| | - Amit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, MP
462 023, India
| | - Bhagat Singh Bhakuni
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, MP
462 023, India
| | - Kaustubh Shrimali
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, MP
462 023, India
| | - Soumava Biswas
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, MP
462 023, India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal, MP
462 023, India
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43
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Prasad CD, Kumar S, Sattar M, Adhikary A, Kumar S. Metal free sulfenylation and bis-sulfenylation of indoles: persulfate mediated synthesis. Org Biomol Chem 2013; 11:8036-40. [DOI: 10.1039/c3ob41601a] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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44
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Balkrishna SJ, Prasad CD, Panini P, Detty MR, Chopra D, Kumar S. Isoselenazolones as catalysts for the activation of bromine: bromolactonization of alkenoic acids and oxidation of alcohols. J Org Chem 2012; 77:9541-52. [PMID: 23046286 DOI: 10.1021/jo301486c] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Isoselenazolones were synthesized by a copper-catalyzed Se-N bond forming reaction between 2-halobenzamides and selenium powder. The catalytic activity of the various isoselenazolones was studied in the bromolactonization of pent-4-enoic acid. Isoselenazolone 9 was studied as a catalyst in several reactions: the bromolactonization of a series of alkenoic acids with bromine or N-bromosuccinimide (NBS) in the presence of potassium carbonate as base, the bromoesterification of a series of alkenes using NBS and a variety of carboxylic acids, and the oxidation of secondary alcohols to ketones using bromine as an oxidizing reagent. Mechanistic details of the isoselenazolone-catalyzed bromination reaction were revealed by (77)Se NMR spectroscopic and ES-MS studies. The oxidative addition of bromine to the isoselenazolone gives the isoselenazolone(IV) dibromide, which could be responsible for the activation of bromine under the reaction conditions. Steric effects from an N-phenylethyl group on the amide of the isoselenazolone and electron-withdrawing fluoro substituents on the benzo fused-ring of the isoselenazolone appear to enhance the stability of the isoselenazolone as a catalyst for the bromination reaction.
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Affiliation(s)
- Shah Jaimin Balkrishna
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER), Bhopal, Madhya Pradesh 462 023, India
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45
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Miura T, Hiraga K, Toyoshima T, Yamauchi M, Murakami M. Synthesis of (1H)-Isochromen-1-imines by Nickel-catalyzed Reaction of 2-Iodobenzamides with Alkynes. CHEM LETT 2012. [DOI: 10.1246/cl.2012.798] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tomoya Miura
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University
| | - Kentaro Hiraga
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University
| | - Takeharu Toyoshima
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University
| | - Motoshi Yamauchi
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University
| | - Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University
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46
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Bhakuni BS, Kumar A, Balkrishna SJ, Sheikh JA, Konar S, Kumar S. KOtBu Mediated Synthesis of Phenanthridinones and Dibenzoazepinones. Org Lett 2012; 14:2838-41. [DOI: 10.1021/ol301077y] [Citation(s) in RCA: 127] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Bhagat Singh Bhakuni
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, (IISER), Bhopal, MP 462 023, India
| | - Amit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, (IISER), Bhopal, MP 462 023, India
| | - Shah Jaimin Balkrishna
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, (IISER), Bhopal, MP 462 023, India
| | - Javeed Ahmed Sheikh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, (IISER), Bhopal, MP 462 023, India
| | - Sanjit Konar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, (IISER), Bhopal, MP 462 023, India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, (IISER), Bhopal, MP 462 023, India
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47
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Bhakuni BS, Balkrishna SJ, Kumar A, Kumar S. An efficient copper mediated synthetic methodology for benzo[d]isothiazol-3(2H)-ones and related sulfur–nitrogen heterocycles. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.01.003] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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