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Chi TC, Yang PC, Hung SK, Wu HW, Wang HC, Liu HK, Liu LW, Chou HH. Synthesis of Multisubstituted 1,2,3-Triazoles: Regioselective Formation and Reaction Mechanism. J Org Chem 2024; 89:5401-5408. [PMID: 38546539 DOI: 10.1021/acs.joc.3c02836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
A synthetically useful approach to functionalized triazoles is described via the reaction of β-carbonyl phosphonates and azides. 1,4- and 1,5-disubstituted and 1,4,5-trisubstituted triazoles can be regio- and chemoselectively accessed under mild conditions in good to excellent yields (31 examples, up to 99%). A mechanism is proposed that rationalizes the avoidance of the 4-phosphonate byproducts, which is aligned with crystallographic and experimental evidence.
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Affiliation(s)
- Tzu-Ching Chi
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Po-Chun Yang
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Shao-Kung Hung
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Hui-Wen Wu
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Hong-Chi Wang
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Hsin-Kuan Liu
- Core Facility Center, National Cheng Kung University, Tainan 701, Taiwan
| | - Li-Wen Liu
- National Tainan First Senior High School, Tainan 701, Taiwan
| | - Ho-Hsuan Chou
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
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2
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Leng J, Xu J, Li Y, Wang SM, Qin HL. A mild protocol for efficient preparation of functional molecules containing triazole. RSC Adv 2024; 14:7601-7608. [PMID: 38440271 PMCID: PMC10911410 DOI: 10.1039/d4ra01271b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 02/27/2024] [Indexed: 03/06/2024] Open
Abstract
The construction of a class of novel triazole molecules containing sulfonyl fluoride functionalities was achieved through Cu-catalyzed click chemistry in good to excellent yields. The sulfonyl fluoride moieties were cleaved completely under base conditions to produce N-unsubstituted triazoles quantitatively, which provides a strategy to combine SuFEx click chemistry with Cu-catalyzed click chemistry ingeniously.
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Affiliation(s)
- Jing Leng
- School of Chemistry and Chemical Engineering, Yangzhou Polytechnic Institute Yangzhou Jiangsu 225127 P. R. China
| | - Jie Xu
- School of Chemistry and Chemical Engineering, Yangzhou Polytechnic Institute Yangzhou Jiangsu 225127 P. R. China
| | - Yanan Li
- School of Chemistry and Chemical Engineering, Yangzhou Polytechnic Institute Yangzhou Jiangsu 225127 P. R. China
| | - Shi-Meng Wang
- Xiangyang Public Inspection and Testing Center No. 69, Taiziwan Road Xiangyang Hubei Province 441000 P. R. China
| | - Hua-Li Qin
- State Key Laboratory of Silicate Materials for Architectures, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology 205 Luoshi Road Wuhan Hubei Province 430070 P. R. China
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3
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Wang R, Stevaert A, Truong TN, Li Q, Krasniqi B, Van Loy B, Voet A, Naesens L, Dehaen W. Exploration of 1,2,3-triazolo fused triterpenoids as inhibitors of human coronavirus 229E targeting the viral nsp15 protein. Arch Pharm (Weinheim) 2024; 357:e2300442. [PMID: 37840345 DOI: 10.1002/ardp.202300442] [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: 08/13/2023] [Revised: 09/20/2023] [Accepted: 09/20/2023] [Indexed: 10/17/2023]
Abstract
The coronavirus disease-19 (COVID-19) pandemic has raised major interest in innovative drug concepts to suppress human coronavirus (HCoV) infections. We previously reported on a class of 1,2,3-triazolo fused betulonic acid derivatives causing strong inhibition of HCoV-229E replication via the viral nsp15 protein, which is proposedly related to compound binding at an intermonomer interface in hexameric nsp15. In the present study, we further explored the structure-activity relationship (SAR), by varying the substituent at the 1,2,3-triazolo ring as well as the triterpenoid skeleton. The 1,2,3-triazolo fused triterpenoids were synthesized by a multicomponent triazolization reaction, which has been developed in-house. Several analogs possessing a betulin, oleanolic acid, or ursolic acid core displayed favorable activity and selectivity (EC50 values for HCoV-229E: 1.6-3.5 μM), but neither of them proved as effective as the lead compound containing betulonic acid. The 18β-glycyrrhetinic acid-containing analogs had low selectivity. The antiviral findings were rationalized by in silico docking in the available structure of the HCoV-229E nsp15 protein. The new SAR insights will aid the further development of these 1,2,3-triazolo fused triterpenoid compounds as a unique type of coronavirus inhibitors.
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Affiliation(s)
- Rui Wang
- Department of Chemistry, Sustainable Chemistry for Metals and Molecules, KU Leuven, Leuven, Belgium
| | - Annelies Stevaert
- Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Tien Nguyen Truong
- Department of Chemistry, Biochemistry, Molecular and Structural Biology, KU Leuven, Leuven, Belgium
| | - Qifei Li
- Department of Chemistry, Sustainable Chemistry for Metals and Molecules, KU Leuven, Leuven, Belgium
| | - Besir Krasniqi
- Department of Chemistry, Sustainable Chemistry for Metals and Molecules, KU Leuven, Leuven, Belgium
| | - Benjamin Van Loy
- Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Arnout Voet
- Department of Chemistry, Biochemistry, Molecular and Structural Biology, KU Leuven, Leuven, Belgium
| | - Lieve Naesens
- Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Wim Dehaen
- Department of Chemistry, Sustainable Chemistry for Metals and Molecules, KU Leuven, Leuven, Belgium
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4
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Guo H, Zhou B, Chang J, Chang W, Feng J, Zhang Z. Multicomponent cyclization with azides to synthesize N-heterocycles. Org Biomol Chem 2023; 21:8054-8074. [PMID: 37801029 DOI: 10.1039/d3ob01115a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
Heterocyclic compounds, both naturally derived and synthetically produced, constitute a wide variety of biologically active and industrially important compounds. The synthesis and application of heterocyclic compounds have garnered significant attention and experienced rapid growth in recent decades. Organic azides, due to their unique properties and distinctive reactivity, have become a convenient chemical tool for achieving a wide range of heterocycles such as triazoles and tetrazoles. Importantly, the field of multicomponent reaction (MCR) chemistry provides a convergent approach to access various N-heterocyclic scaffolds, offering novelty, diversity, and complexity. However, the exploration of MCR pathways to N-heterocyclic compounds remains incomplete. Here, we review the use of multicomponent reactions for the preparation of N-heterocycles. A wide range of reactions based on azides for the synthesis of various types of N-heterocyclic systems have been developed.
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Affiliation(s)
- Hong Guo
- College of Science, China Agricultural University, Beijing 100193, China.
| | - Bei Zhou
- College of Science, China Agricultural University, Beijing 100193, China.
| | - Jingjing Chang
- College of Science, China Agricultural University, Beijing 100193, China.
| | - Wenxu Chang
- College of Science, China Agricultural University, Beijing 100193, China.
| | - Jiyao Feng
- College of Science, China Agricultural University, Beijing 100193, China.
| | - Zhenhua Zhang
- College of Science, China Agricultural University, Beijing 100193, China.
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5
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Radwan EK, Rashdan HRM, Hemdan BA, Koryam AA, El-Naggar ME. A dual-functional sulfone biscompound containing 1,2,3-triazole moiety for decolorization and disinfection of contaminated water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:77238-77252. [PMID: 35676578 PMCID: PMC9581830 DOI: 10.1007/s11356-022-20932-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 05/13/2022] [Indexed: 05/28/2023]
Abstract
Water decontamination from toxic dyes and pathogenic microorganisms is critical for life on Earth. Herein, we report the synthesis of sulfone biscompound containing 1,2,3-triazole moiety and evaluation of its dye decolorization and biocidal and disinfection efficiencies. The decolorization efficiency was tested under different experimental conditions, while the biocidal action was examined against various types of waterborne pathogens, and the disinfection of some pathogenic microbes was executed in artificially contaminated water. The findindgs illustrated that the solution initial pH (pHi) affected the decolorization efficiency significantly. About complete removal of 10 mg/L malachite green (MG) dye was achieved after 10 min using 3 g/L of the sulfone biscompound at pHi 6. The pseudo-second-order equation suited the adsorption kinetics accurately, while the equilibrium data was suited by Langmuir isotherm model. Electrostatic, n-π, and π-π interactions brought about the adsorption of MG onto the sulfone biscompound. The biocidal results indicated that the sulfone biscompound had a powerful antibacterial potential against the tested bacterial species. Likewise, the distinction trail revealed that after 70-90 min of direct contact with an effective dose, the tested pathogens could be completely eliminated (6-log reduction). Overall, the newly synthesized sulfone biscompound can efficiently remove cationic dyes and disinfect contaminated water.
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Affiliation(s)
- Emad K Radwan
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt.
| | - Huda R M Rashdan
- Chemistry of Natural and Microbial Products Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt
| | - Bahaa A Hemdan
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt
| | - Asmaa A Koryam
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St, Dokki, Giza, 12622, Egypt
| | - Mehrez E El-Naggar
- Institute of Textile Research and Technology, National Research Centre, 33 El Bohouth St, Dokki, Giza, 12622, Egypt.
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6
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Ilkin VG, Beryozkina TV, Willocx D, Silaichev PS, Veettil SP, Dehaen W, Bakulev VA. Rhodium-Catalyzed Transannulation of 4,5-Fused 1-Sulfonyl-1,2,3-triazoles with Nitriles. The Selective Formation of 1-Sulfonyl-4,5-fused Imidazoles versus Secondary C-H Bond Migration. J Org Chem 2022; 87:12274-12286. [PMID: 36049015 DOI: 10.1021/acs.joc.2c01456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reactivity of readily available 4,5-fused-1-sulfonyl-1,2,3-triazoles was examined in the Rh(II)-catalyzed transannulation reaction with nitriles. We have come across the interesting observation that 1-sulfonyl cycloalkeno[d][1,2,3]triazoles that possess β-hydrogens resist intramolecular β-hydride migration and could serve as a new source of Rh-iminocarbenoids for intermolecular Rh(II)-catalyzed transannulation reactions. As a result, 1-sulfonyl cyclohexeno-, cyclohepteno-, dihydropyrano-, 5-phenyltetrahydrobenzo-, and 4,5-dihydronaphtho[d]imidazoles were synthesized from various nitriles in good yields. A one-pot methodology has also been executed for the synthesis of NH-imidazoles.
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Affiliation(s)
- Vladimir G Ilkin
- Technology for Organic Synthesis Department, Ural Federal University, 19 Mira Street, Yekaterinburg 620002, Russia.,Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Tetyana V Beryozkina
- Technology for Organic Synthesis Department, Ural Federal University, 19 Mira Street, Yekaterinburg 620002, Russia
| | - Daan Willocx
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Pavel S Silaichev
- Technology for Organic Synthesis Department, Ural Federal University, 19 Mira Street, Yekaterinburg 620002, Russia.,Department of Chemistry, Perm State University, 15 Bukireva Street, Perm 614990, Russia
| | - Santhini Pulikkal Veettil
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Vasiliy A Bakulev
- Technology for Organic Synthesis Department, Ural Federal University, 19 Mira Street, Yekaterinburg 620002, Russia
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7
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Wang R, Krasniqi B, Li Y, Dehaen W. Triphenylphosphonium-linked derivative of allobetulin: preparation, anticancer properties and their mechanism of inhibiting SGC-7901 cells proliferation. Bioorg Chem 2022; 126:105853. [DOI: 10.1016/j.bioorg.2022.105853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 04/15/2022] [Accepted: 05/03/2022] [Indexed: 11/27/2022]
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8
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Jankovič D, Virant M, Gazvoda M. Copper-Catalyzed Azide-Alkyne Cycloaddition of Hydrazoic Acid Formed In Situ from Sodium Azide Affords 4-Monosubstituted-1,2,3-Triazoles. J Org Chem 2022; 87:4018-4028. [PMID: 35148087 PMCID: PMC8938953 DOI: 10.1021/acs.joc.1c02775] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Indexed: 12/23/2022]
Abstract
We report a copper-catalyzed cycloaddition of hydrogen azide (hydrazoic acid, HN3) with terminal alkynes to form 4-substituted-1H-1,2,3-triazoles in a sustainable manner. Hydrazoic acid was formed in situ from sodium azide under acidic conditions to react with terminal alkynes in a copper-catalyzed reaction. Using polydentate N-donor chelating ligands and mild organic acids, the reactions were realized to proceed at room temperature under aerobic conditions in a methanol-water mixture and with 5 mol % catalyst loadings to afford 4-substituted-1,2,3-triazoles in high yields. This method is amenable on a wide range of alkyne substrates, including unprotected peptides, showing diverse functional group tolerance. It is applicable for late-stage functionalization synthetic strategies, as demonstrated in the synthesis of the triazole analogue of losartan. The preparation of orthogonally protected azahistidine from Fmoc-l-propargylglycine was realized on a gram scale. The hazardous nature of hydrazoic acid has been diminished as it forms in situ in <6% concentrations at which it is safe to handle. Reactions of distilled solutions of hydrazoic acid indicated its role as a reactive species in the copper-catalyzed reaction.
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Affiliation(s)
- Dominik Jankovič
- Faculty of Chemistry and
Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Miha Virant
- Faculty of Chemistry and
Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Martin Gazvoda
- Faculty of Chemistry and
Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
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9
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Eerlings R, Barbakadze N, Nguyen T, Nadaraia N, Smeets E, Moris L, Handle F, El Kharraz S, Devlies W, Voet A, Dehaen W, Claessens F, Helsen C. Small-molecule profiling for steroid receptor activity using a universal steroid receptor reporter assay. J Steroid Biochem Mol Biol 2022; 217:106043. [PMID: 34902544 DOI: 10.1016/j.jsbmb.2021.106043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/07/2021] [Accepted: 12/08/2021] [Indexed: 11/16/2022]
Abstract
A critical step in the development of novel drug candidates for the treatment of steroid related diseases is ensuring the absence of crosstalk with steroid receptors (SRs). Establishing this SR cross-reactivity profile requires multiple reporter assays as each SR associates with its unique enhancer region, a labor intensive and time-consuming approach. To overcome this need for multi-reporter assays, we established a steroid receptor inducible luciferase reporter assay (SRi-Luc) that allows side-by-side examination of agonistic and antagonistic properties of small-molecules on all steroid receptors. This state-of-the-art SRi-Luc consists of a unique alteration of four distinct keto-steroid- and estrogen response elements. As proof of principle, the SRi-Luc assay was used to profile a set of novel designed steroidal 1,2,3-triazoles. These triazolized steroidal compounds were developed via our in-house triazolization methodology, in which an enolizable ketone is converted into a triazolo-fused or -linked analog by treatment with a primary amine or ammonium salt in the presence of 4-nitrophenyl azide. From these designed steroidal 1,2,3-triazoles, six successfully reduced androgen receptor activity by 40 %. Although opted as antiandrogens, their cross-reactivity with other SRs was apparent in our SRi-Luc assay and rendered them unsuited for further antagonist development and clinical use. Overall, the SRi-Luc overcomes the need of multi-reporter assays for the profiling of small-molecules on all SRs. This not only reduces the risk of introducing biases, it as well accelerates early-stage drug discovery when designing particular SR selective (ant)agonists or characterizing off-target effects of lead molecules acting on any drug target.
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Affiliation(s)
- Roy Eerlings
- Molecular Endocrinology Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Nana Barbakadze
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Leuven, Belgium; Department of Plant Biopolymers and Chemical Modification of Natural Compounds, TSMU Iovel Kutateladze Institute of Pharmacochemistry, Tbilisi, Georgia
| | - Tien Nguyen
- Laboratory of Biomolecular Modelling and Design, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Nanuli Nadaraia
- Department of Plant Biopolymers and Chemical Modification of Natural Compounds, TSMU Iovel Kutateladze Institute of Pharmacochemistry, Tbilisi, Georgia
| | - Elien Smeets
- Molecular Endocrinology Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Lisa Moris
- Molecular Endocrinology Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium; Department of Urology, University Hospitals Leuven, Leuven, Belgium
| | - Florian Handle
- Molecular Endocrinology Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Sarah El Kharraz
- Molecular Endocrinology Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Wout Devlies
- Molecular Endocrinology Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium; Department of Urology, University Hospitals Leuven, Leuven, Belgium
| | - Arnout Voet
- Laboratory of Biomolecular Modelling and Design, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Frank Claessens
- Molecular Endocrinology Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Christine Helsen
- Molecular Endocrinology Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium.
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Henwood AF, Hegarty IN, McCarney EP, Lovitt JI, Donohoe S, Gunnlaugsson T. Recent advances in the development of the btp motif: A versatile terdentate coordination ligand for applications in supramolecular self-assembly, cation and anion recognition chemistries. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214206] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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11
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Synthesis and Anti-HIV Activity of a Novel Series of Isoquinoline-Based CXCR4 Antagonists. Molecules 2021; 26:molecules26206297. [PMID: 34684878 PMCID: PMC8539250 DOI: 10.3390/molecules26206297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 10/13/2021] [Accepted: 10/14/2021] [Indexed: 11/26/2022] Open
Abstract
An expansion of the structure–activity relationship study of CXCR4 antagonists led to the synthesis of a series of isoquinolines, bearing a tetrahydroquinoline or a 3-methylpyridinyl moiety as head group. All compounds were investigated for CXCR4 affinity and antagonism in competition binding and calcium mobilization assays, respectively. In addition, the anti-HIV activity of all analogues was determined. All compounds showed excellent activity, with compound 24c being the most promising one, since it displayed consistently low nanomolar activity in the various assays.
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12
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Capel Berdiell I, Davies DJ, Woodworth J, Kulmaczewski R, Cespedes O, Halcrow MA. Structures and Spin States of Iron(II) Complexes of Isomeric 2,6-Di(1,2,3-triazolyl)pyridine Ligands. Inorg Chem 2021; 60:14988-15000. [PMID: 34547208 DOI: 10.1021/acs.inorgchem.1c02404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Iron(II) complex salts of 2,6-di(1,2,3-triazol-1-yl)pyridine (L1) are unexpectedly unstable in undried solvent. This is explained by the isolation of [Fe(L1)4(H2O)2][ClO4]2 and [Fe(NCS)2(L1)2(H2O)2]·L1, containing L1 bound as a monodentate ligand rather than in the expected tridentate fashion. These complexes associate into 44 grid structures through O-H···N hydrogen bonding; a solvate of a related 44 coordination framework, catena-[Cu(μ-L1)2(H2O)2][BF4]2, is also presented. The isomeric ligands 2,6-di(1,2,3-triazol-2-yl)pyridine (L2) and 2,6-di(1H-1,2,3-triazol-4-yl)pyridine (L3) bind to iron(II) in a more typical tridentate fashion. Solvates of [Fe(L3)2][ClO4]2 are low-spin and diamagnetic in the solid state and in solution, while [Fe(L2)2][ClO4]2 and [Co(L3)2][BF4]2 are fully high-spin. Treatment of L3 with methyl iodide affords 2,6-di(2-methyl-1,2,3-triazol-4-yl)pyridine (L4) and 2-(1-methyl-1,2,3-triazol-4-yl)-6-(2-methyl-1,2,3-triazol-4-yl)pyridine (L5). While salts of [Fe(L5)2]2+ are low-spin in the solid state, [Fe(L4)2][ClO4]2·H2O is high-spin, and [Fe(L4)2][ClO4]2·3MeNO2 exhibits a hysteretic spin transition to 50% completeness at T1/2 = 128 K (ΔT1/2 = 6 K). This transition proceeds via a symmetry-breaking phase transition to an unusual low-temperature phase containing three unique cation sites with high-spin, low-spin, and 1:1 mixed-spin populations. The unusual distribution of the spin states in the low-temperature phase reflects "spin-state frustration" of the mixed-spin cation site by an equal number of high-spin and low-spin nearest neighbors. Gas-phase density functional theory calculations reproduce the spin-state preferences of these and some related complexes. These highlight the interplay between the σ-basicity and π-acidity of the heterocyclic donors in this ligand type, which have opposing influences on the molecular ligand field. The Brønsted basicities of L1-L3 are very sensitive to the linkage isomerism of their triazolyl donors, which explains why their iron complex spin states show more variation than the better-known iron(II)/2,6-dipyrazolylpyridine system.
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Affiliation(s)
- Izar Capel Berdiell
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Daniel J Davies
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Jack Woodworth
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Rafal Kulmaczewski
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Oscar Cespedes
- School of Physics and Astronomy, University of Leeds, E. C. Stoner Building, Leeds LS2 9JT, U.K
| | - Malcolm A Halcrow
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
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13
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Huang C, Geng X, Zhao P, Zhou Y, Yu XX, Wang LS, Wu YD, Wu AX. Direct Synthesis of 4-Aryl-1,2,3-triazoles via I 2-Promoted Cyclization under Metal- and Azide-Free Conditions. J Org Chem 2021; 86:13664-13672. [PMID: 34519212 DOI: 10.1021/acs.joc.1c01702] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We herein report an iodine-mediated formal [2 + 2 + 1] cyclization of methyl ketones, p-toluenesulfonyl hydrazines, and 1-aminopyridinium iodide for preparation of 4-aryl-NH-1,2,3-triazoles under metal- and azide-free conditions. Notably, this is achieved using p-toluenesulfonyl hydrazines and 1-aminopyridinium iodide as azide surrogates, providing a novel route toNH-1,2,3-triazoles. Furthermore, this approach provides rapid and practical access to potent inhibitors of indoleamine 2,3-dioxygenase (IDO).
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Affiliation(s)
- Chun Huang
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, P. R. China
| | - Xiao Geng
- Advanced Research Institute and Department of Chemistry, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
| | - Peng Zhao
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, P. R. China
| | - You Zhou
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, P. R. China
| | - Xiao-Xiao Yu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, P. R. China
| | - Li-Sheng Wang
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, P. R. China
| | - Yan-Dong Wu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, P. R. China
| | - An-Xin Wu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, P. R. China
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14
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Abstract
1,2,3-triazoles represent a functional heterocyclic core that has been at the center of modern organic chemistry since the beginning of click chemistry. Being a versatile framework, such an aromatic ring can be observed in uncountable molecules useful in medicine and photochemistry, just to name a few. This review summarizes the progress achieved in their synthesis from 2015 to today, with particular emphasis on the development of new catalytic and eco-compatible approaches. In doing so, we subdivided the report based on their degree of functionalization and, for each subparagraph, we outlined the role of the catalyst employed.
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15
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Talukdar R, Singh V, Mourya H, Nasibullah M, Tiwari B. Stitching Triazoles to Arenes via a Transition Metal-Free Aryne Diels-Alder/1,3-Prototropic Shift/Dehydrobromination Cascade. J Org Chem 2021; 86:12277-12284. [PMID: 34328329 DOI: 10.1021/acs.joc.1c00562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The 1,2,3-triazole-fused polyaromatic frameworks are traditionally obtained through transition metal-catalyzed C-H/C-X arylation of the preinstalled triazoles at a very high temperature. Herein, a transition metal-free direct synthesis via an aryne Diels-Alder/1,3-prototropic shift/dehydrobromination cascade is reported. This method gives access to triazole-fused aromatics as well as the corresponding dihydrocarbocycles under mild reaction conditions.
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Affiliation(s)
- Ranadeep Talukdar
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Vikram Singh
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Hemlata Mourya
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Malik Nasibullah
- Department of Chemistry, Integral University, Dasauli, Bas-ha Kursi Road, Lucknow 226026, India
| | - Bhoopendra Tiwari
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
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16
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Wang R, Li Y, Hu H, Persoons L, Daelemans D, De Jonghe S, Luyten W, Krasniqi B, Dehaen W. Antibacterial and antitumoral properties of 1,2,3-triazolo fused triterpenes and their mechanism of inhibiting the proliferation of HL-60 cells. Eur J Med Chem 2021; 224:113727. [PMID: 34352711 DOI: 10.1016/j.ejmech.2021.113727] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 07/19/2021] [Accepted: 07/27/2021] [Indexed: 01/04/2023]
Abstract
Antimicrobial resistance and cancer are two important problems affecting human health. Actively developing novel antibiotics and anticancer medicines is a priority. Natural pentacyclic triterpenoids have attracted wide attention due to their significant biological activities. In this study, a series of 1,2,3-triazolo fused triterpenoids (betulin, oleanolic acid and ursolic acid) were functionalized on the A-ring by an in-house developed multi-component triazolization reaction. The compounds were investigated for antitumoral activity in twelve cancer cell lines and were also tested for antibacterial activity against four bacteria. In terms of anticancer effects, compounds 5b-f and 8a-d displayed strong cytotoxic activity in pancreatic adenocarcinoma (Capan-1), chronic myeloid leukemia (Hap-1), acute myeloid leukemia (HL-60), acute lymphoblastic leukemia (Jurkat) and non-Hodgkin lymphoma (Rec-1) cell lines. Among them, compound 5f exhibited the most potent antiproliferative effect on HL-60 cells. Further pharmacological research confirmed that compound 5f caused mitochondrial dysfunction and arrested the cell cycle in the G0/G1 phase to induce apoptosis of HL-60 cells. In addition, compound 5f also induced autophagy to inhibit the proliferation of HL-60 cells. Antibacterial screening revealed that compounds 2a-g and 5a-d showed modest activity against Gram-negative bacteria (Escherichia coli and Salmonella enterica subsp. enterica) with especially compounds 2c and 2d being potent inhibitors of Salmonella enterica subsp. enterica growth. Because of their promising anticancer and antibacterial activity, this series of compounds deserve further study.
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Affiliation(s)
- Rui Wang
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Yang Li
- Zhong Yuan Academy of Biological Medicine, Liaocheng People's Hospital, Liaocheng, 252000, PR China
| | - Haibo Hu
- Department of Biology, Animal Physiology and Neurobiology Section, KU Leuven, Naamsestraat 59, Box 2465, B-3000, Leuven, Belgium
| | - Leentje Persoons
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - Box 1043, B-3000, Leuven, Belgium
| | - Dirk Daelemans
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - Box 1043, B-3000, Leuven, Belgium
| | - Steven De Jonghe
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - Box 1043, B-3000, Leuven, Belgium
| | - Walter Luyten
- Department of Biology, Animal Physiology and Neurobiology Section, KU Leuven, Naamsestraat 59, Box 2465, B-3000, Leuven, Belgium
| | - Besir Krasniqi
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001, Leuven, Belgium.
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17
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Sai Allaka B, Basavoju S, Rama Krishna G. A Photoinduced Multicomponent Regioselective Synthesis of 1,4,5‐Trisubstituted‐1,2,3‐Triazoles: Transition Metal‐, Azide‐ and Oxidant‐Free Protocol. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100321] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Bhargava Sai Allaka
- Department of Chemistry National Institute of Technology Warangal Warangal-506 004 Telangana India
| | - Srinivas Basavoju
- Department of Chemistry National Institute of Technology Warangal Warangal-506 004 Telangana India
| | - Gamidi Rama Krishna
- Organic Chemistry Division CSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune Maharashtra 411 008 India
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18
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Kumar H, Dhameja M, Rizvi M, Gupta P. Progress in the Synthesis of Fused 1,2,3‐Triazoles. ChemistrySelect 2021. [DOI: 10.1002/slct.202100442] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Hariom Kumar
- Department of Chemistry School of Physical & Decision Sciences Babasaheb Bhimrao Ambedkar University (A Central University) Rae barelli Road Lucknow 226025, U. P. India
| | - Manoj Dhameja
- Department of Chemistry School of Physical & Decision Sciences Babasaheb Bhimrao Ambedkar University (A Central University) Rae barelli Road Lucknow 226025, U. P. India
| | - Marziya Rizvi
- Department of Chemistry School of Physical & Decision Sciences Babasaheb Bhimrao Ambedkar University (A Central University) Rae barelli Road Lucknow 226025, U. P. India
| | - Preeti Gupta
- Department of Chemistry School of Physical & Decision Sciences Babasaheb Bhimrao Ambedkar University (A Central University) Rae barelli Road Lucknow 226025, U. P. India
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19
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Borne AL, Brulet JW, Yuan K, Hsu KL. Development and biological applications of sulfur-triazole exchange (SuTEx) chemistry. RSC Chem Biol 2021; 2:322-337. [PMID: 34095850 PMCID: PMC8174820 DOI: 10.1039/d0cb00180e] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 01/05/2021] [Indexed: 12/27/2022] Open
Abstract
Sulfur electrophiles constitute an important class of covalent small molecules that have found widespread applications in synthetic chemistry and chemical biology. Various electrophilic scaffolds, including sulfonyl fluorides and arylfluorosulfates as recent examples, have been applied for protein bioconjugation to probe ligand sites amenable for chemical proteomics and drug discovery. In this review, we describe the development of sulfonyl-triazoles as a new class of electrophiles for sulfur-triazole exchange (SuTEx) chemistry. SuTEx achieves covalent reaction with protein sites through irreversible modification of a residue with an adduct group (AG) upon departure of a leaving group (LG). A principal differentiator of SuTEx from other chemotypes is the selection of a triazole heterocycle as the LG, which introduces additional capabilities for tuning the sulfur electrophile. We describe the opportunities afforded by modifications to the LG and AG alone or in tandem to facilitate nucleophilic substitution reactions at the SO2 center in cell lysates and live cells. As a result of these features, SuTEx serves as an efficient platform for developing chemical probes with tunable bioactivity to study novel nucleophilic sites on established and poorly annotated protein targets. Here, we highlight a suite of biological applications for the SuTEx electrophile and discuss future goals for this enabling covalent chemistry.
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Affiliation(s)
- Adam L. Borne
- Department of Pharmacology, University of Virginia School of MedicineCharlottesvilleVirginia 22908USA
| | - Jeffrey W. Brulet
- Department of Chemistry, University of VirginiaMcCormick Road, P.O. Box 400319CharlottesvilleVirginia 22904USA+1-434-297-4864
| | - Kun Yuan
- Department of Chemistry, University of VirginiaMcCormick Road, P.O. Box 400319CharlottesvilleVirginia 22904USA+1-434-297-4864
| | - Ku-Lung Hsu
- Department of Pharmacology, University of Virginia School of MedicineCharlottesvilleVirginia 22908USA
- Department of Chemistry, University of VirginiaMcCormick Road, P.O. Box 400319CharlottesvilleVirginia 22904USA+1-434-297-4864
- University of Virginia Cancer Center, University of VirginiaCharlottesvilleVA 22903USA
- Department of Molecular Physiology and Biological Physics, University of VirginiaCharlottesvilleVirginia 22908USA
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20
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Opsomer T, Dehaen W. Metal-free syntheses of N-functionalized and NH-1,2,3-triazoles: an update on recent developments. Chem Commun (Camb) 2021; 57:1568-1590. [PMID: 33491711 DOI: 10.1039/d0cc06654k] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An overview of the latest developments in the metal-free synthesis of non-benzo-fused N-functionalized and NH-1,2,3-triazoles is provided in this feature article. Synthetic studies that appeared from 2016 until August 2020 are organized according to a wide-ranging classification, comprising oxidative and eliminative azide-dipolarophile cycloadditions, diazo transfer reactions and N-tosylhydrazone-mediated syntheses. The newly developed methods constitute a significant contribution to the field of 1,2,3-triazole synthesis in terms of structural variation via either the exploration of novel reactions, or the exploitation of existing methodologies.
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Affiliation(s)
- Tomas Opsomer
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium.
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21
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Prakash R, Opsomer T, Dehaen W. Triazolization of Enolizable Ketones with Primary Amines: A General Strategy toward Multifunctional 1,2,3-Triazoles. CHEM REC 2020; 21:376-385. [PMID: 33350560 DOI: 10.1002/tcr.202000151] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 12/16/2022]
Abstract
The development of metal-free syntheses toward 1,2,3-triazoles has been a burgeoning research area throughout the past decade. Despite the numerous advances, the scarceness of methods for the preparation of 1,5-disubstituted 1,2,3-triazoles from readily available substrates remained a challenge that was addressed by our group in 2016. A metal-free three-component reaction, which we have dubbed the triazolization reaction, was established for the rapid synthesis of 1,5-disubstituted, fully functionalized and NH-1,2,3-triazoles. This novel approach stands out because it utilizes widely available starting materials, namely primary amines and enolizable ketones. Furthermore, the broad substrate scope is a major advantage, and was further expanded by the number of modified protocols that have been reported. Triazolization products have successfully found utility as intermediates in various synthetic transformations, and were the subject of a few interesting biological activity studies.
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Affiliation(s)
- Rashmi Prakash
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Tomas Opsomer
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
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22
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Wang R, Li Y, Dehaen W. Antiproliferative effect of mitochondria-targeting allobetulin 1,2,3-triazolium salt derivatives and their mechanism of inducing apoptosis of cancer cells. Eur J Med Chem 2020; 207:112737. [DOI: 10.1016/j.ejmech.2020.112737] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 08/04/2020] [Accepted: 08/04/2020] [Indexed: 12/12/2022]
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23
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Opsomer T, Van Hoof M, D’Angelo A, Dehaen W. 1,2,3-Triazole-Mediated Synthesis of 1-Methyleneisoquinolines: A Three-Step Synthesis of Papaverine and Analogues. Org Lett 2020; 22:3596-3600. [DOI: 10.1021/acs.orglett.0c01069] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Tomas Opsomer
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Max Van Hoof
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Andrea D’Angelo
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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24
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Ren MT, Li M, Wang AJ, Gao J, Zhang XX, Shu WM. Iodine-Mediated Condensation-Cyclization of α-Azido Ketones with p
-Toluenesulfonyl Hydrazide for Synthesis of 4-Aryl-NH
-1,2,3-Triazoles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000146] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Ming-Tian Ren
- College of Chemistry and Environmental Engineering; Yangtze University; 434023 Jingzhou P. R. China
| | - Min Li
- College of Chemistry and Environmental Engineering; Yangtze University; 434023 Jingzhou P. R. China
| | - An-Jing Wang
- College of Chemistry and Environmental Engineering; Yangtze University; 434023 Jingzhou P. R. China
| | - Jie Gao
- Hubei Key Laboratory of Radiation Chemistry and Functional Materials; Hubei University of Science and Technology; 437100 Xianning P. R. China
| | - Xiang-Xiang Zhang
- College of Chemistry and Environmental Engineering; Yangtze University; 434023 Jingzhou P. R. China
| | - Wen-Ming Shu
- College of Chemistry and Environmental Engineering; Yangtze University; 434023 Jingzhou P. R. China
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25
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Affiliation(s)
- Manoj Dhameja
- Department of Chemistry School Of Physical & Decision SciencesBabasaheb Bhimrao Ambedkar University (A Central University) Rae barelli Road Lucknow 226025 (U. P.) India
| | - Hariom Kumar
- Department of Chemistry School Of Physical & Decision SciencesBabasaheb Bhimrao Ambedkar University (A Central University) Rae barelli Road Lucknow 226025 (U. P.) India
| | - Preeti Gupta
- Department of Chemistry School Of Physical & Decision SciencesBabasaheb Bhimrao Ambedkar University (A Central University) Rae barelli Road Lucknow 226025 (U. P.) India
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26
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Shu WM, Zhang XF, Zhang XX, Li M, Wang AJ, Wu AX. Metal-Free Cascade [4 + 1] Cyclization Access to 4-Aryl- NH-1,2,3-triazoles from N-Tosylhydrazones and Sodium Azide. J Org Chem 2019; 84:14919-14925. [PMID: 31612711 DOI: 10.1021/acs.joc.9b02250] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A molecular iodine-mediated coupling cyclization reaction for the synthesis of 4-aryl-NH-1,2,3-triazoles has been developed from N-tosylhydrazones and sodium azide. This metal-free cascade [4 + 1] cyclization reaction could rapidly synthesize valuable compounds via a sequential C-N and N-N bond formation. Mechanistic studies demostrate that the nitrogen atoms of the 1,2,3-triazoles are not entirely from sodium azide.
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Affiliation(s)
- Wen-Ming Shu
- College of Chemistry and Environmental Engineering , Yangtze University , Jingzhou 434023 , P.R. China
| | - Xun-Fang Zhang
- College of Chemistry and Environmental Engineering , Yangtze University , Jingzhou 434023 , P.R. China
| | - Xiang-Xiang Zhang
- College of Chemistry and Environmental Engineering , Yangtze University , Jingzhou 434023 , P.R. China
| | - Min Li
- College of Chemistry and Environmental Engineering , Yangtze University , Jingzhou 434023 , P.R. China
| | - An-Jing Wang
- College of Chemistry and Environmental Engineering , Yangtze University , Jingzhou 434023 , P.R. China
| | - An-Xin Wu
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry , Central China Normal University , Wuhan 430079 , P.R. China
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27
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Gour J, Gatadi S, Akunuri R, Yaddanapudi MV, Nengroo MA, Datta D, Chopra S, Nanduri S. Catalyst-free facile synthesis of polycyclic indole/pyrrole substituted-1,2,3-triazoles. Org Biomol Chem 2019; 17:8153-8165. [PMID: 31460554 DOI: 10.1039/c9ob01560d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general and catalyst-free access to the fused polycyclic N-heterocycles via an intramolecular azide-alkene cascade reaction under mild reaction conditions has been developed. The reaction is applicable to both indole and pyrrole substrates, and a variety of substituents are tolerated. The entire sequence can be carried out in a one-pot operation. This methodology provides a sustainable and efficient access to a variety of novel polycyclic indole/pyrrole substituted-1,2,3-triazoles.
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Affiliation(s)
- Jitendra Gour
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | - Srikanth Gatadi
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | - Ravikumar Akunuri
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | | | - Mushtaq Ahmad Nengroo
- Biochemistry Division, CSIR-Central Drug Research Institute (CDRI), Lucknow 226031, India
| | - Dipak Datta
- Biochemistry Division, CSIR-Central Drug Research Institute (CDRI), Lucknow 226031, India
| | - Sidharth Chopra
- Division of Microbiology, CSIR-Central Drug Research Institute, Sitapur Road, Sector 10, Janakipuram Extension, Lucknow 226031, Uttar Pradesh, India
| | - Srinivas Nanduri
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
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28
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Yamamoto K, Inuki S, Ohno H, Oishi S. Scaffold hopping of fused piperidine-type NK3 receptor antagonists to reduce environmental impact. Bioorg Med Chem 2019; 27:2019-2026. [PMID: 30975505 DOI: 10.1016/j.bmc.2019.03.059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 03/29/2019] [Accepted: 03/30/2019] [Indexed: 12/27/2022]
Abstract
Neurokinin-3 receptor (NK3R) plays a pivotal role in the release of gonadotropin-releasing hormone in the hypothalamus-pituitary-gonadal (HPG) axis. To develop novel NK3R antagonists with less environmental toxicity, a series of heterocyclic scaffolds for the triazolopiperazine substructure in an NK3R antagonist fezolinetant were designed and synthesized. An isoxazolo[3,4-c]piperidine derivative exhibited moderate NK3R antagonistic activity and favorable properties that were decomposable under environmental conditions.
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Affiliation(s)
- Koki Yamamoto
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shinsuke Inuki
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hiroaki Ohno
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shinya Oishi
- Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.
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29
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Silveira-Dorta G, Jana S, Borkova L, Thomas J, Dehaen W. Straightforward synthesis of enantiomerically pure 1,2,3-triazoles derived from amino esters. Org Biomol Chem 2019; 16:3168-3176. [PMID: 29645062 DOI: 10.1039/c8ob00533h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical and straightforward approach that enables, for the first time, the synthesis of enantiomerically pure 1,4,5-trisubstituted, 1,5-disubstituted, and fused 1,2,3-triazole derivatives has been developed. The synthesis employs enantiomerically pure amino esters derived from amino acids and commercially available ketones under metal-free conditions.
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Affiliation(s)
- Gastón Silveira-Dorta
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
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30
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Wiemann J, Sommerwerk S, Kluge R, Ströhl D, Csuk R. Epimerization, Claisen and Vorländer reaction starting from methyl platanoate. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.09.066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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31
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Kumari S, Shakoor SMA, Markad D, Mandal SK, Sakhuja R. NH
4
OAc‐Promoted Cascade Approach towards Aberrant Synthesis of Chromene‐Fused Quinolinones. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801292] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Santosh Kumari
- Department of Chemistry Birla Institute of Technology & Science 333031 Pilani, Rajasthan India
| | - S. M. Abdul Shakoor
- Department of Chemistry Birla Institute of Technology & Science 333031 Pilani, Rajasthan India
| | - Datta Markad
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali Sector 81, S.A.S. Nagar, Manuali P.O. 140306 Punjab India
| | - Sanjay K. Mandal
- Department of Chemical Sciences Indian Institute of Science Education and Research Mohali Sector 81, S.A.S. Nagar, Manuali P.O. 140306 Punjab India
| | - Rajeev Sakhuja
- Department of Chemistry Birla Institute of Technology & Science 333031 Pilani, Rajasthan India
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32
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Vroemans R, Verhaegen Y, Dieu MTT, Dehaen W. Assembly of fully substituted triazolochromenes via a novel multicomponent reaction or mechanochemical synthesis. Beilstein J Org Chem 2018; 14:2689-2697. [PMID: 30410630 PMCID: PMC6204814 DOI: 10.3762/bjoc.14.246] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 10/08/2018] [Indexed: 12/28/2022] Open
Abstract
A new metal-free one-pot three-component procedure towards fully substituted triazolochromenes has been developed, starting from commercially available materials. Salicylaldehydes and nitroalkenes were reacted under solvent-free conditions, followed by a 1,3-dipolar cycloaddition of the intermediate 3-nitro-2H-chromenes with organic azides in a one-pot two-step sequence. The triazolochromenes were formed with complete regioselectivity and new biologically relevant structures were synthesized via extension of the developed procedure and via postfunctionalization. The mechanochemical synthesis was carried out for several salicylaldehydes and gave a clear improvement in the yield of the corresponding triazolochromenes and consequently showed to be a viable alternative for solid salicylaldehydes.
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Affiliation(s)
- Robby Vroemans
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Yenthel Verhaegen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - My Tran Thi Dieu
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
- The University of Danang, University of Science and Education, 459 Ton Duc Thang, Lien Chieu, Danang, Vietnam
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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33
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Yang L, Wu Y, Yang Y, Wen C, Wan JP. Catalyst-free synthesis of 4-acyl- NH-1,2,3-triazoles by water-mediated cycloaddition reactions of enaminones and tosyl azide. Beilstein J Org Chem 2018; 14:2348-2353. [PMID: 30254699 PMCID: PMC6142726 DOI: 10.3762/bjoc.14.210] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 08/22/2018] [Indexed: 12/15/2022] Open
Abstract
The synthesis of 4-acyl-NH-1,2,3-triazoles has been accomplished with high efficiency through the cycloaddition reactions between N,N-dimethylenaminones and tosyl azide. This method is featured with extraordinary sustainability by employing water as the sole medium, free of any catalyst or additive, authentically mild conditions (40 °C stirring) as well as practical scalability.
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Affiliation(s)
- Lu Yang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Yuwei Wu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Yiming Yang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Chengping Wen
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, P. R. China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
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34
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Lai B, Mei F, Gu Y. Bifunctional Solid Catalyst for Organic Reactions in Water: Simultaneous Anchoring of Acetylacetone Ligands and Amphiphilic Ionic Liquid "Tags" by Using a Dihydropyran Linker. Chem Asian J 2018; 13:2529-2542. [PMID: 29873190 DOI: 10.1002/asia.201800567] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 05/17/2018] [Indexed: 01/18/2023]
Abstract
The use of solid catalysts to promote organic reactions in water faces the inherent difficulty of the poor mass-transfer efficiency of organic substances in water, which is often responsible for insufficient reaction and low yields. To solve this problem, the solid surface can be manipulated to become amphiphilic. However, the introduction of surfactant-like moieties onto the surface of silica-based materials is not easy. By using an accessible dihydropyran derivative as a grafting linker, a surfactant-combined bifunctional silica-based solid catalyst that possessed an ionic liquid tail and a metal acetylacetonate moiety was prepared through a mild Lewis-acid-catalyzed ring-opening reaction with a thiol-functionalized silica. The surfactant-combined silica-supported metal acetylacetone catalysts displayed excellent catalytic activity in water for a range of reactions. The solid catalyst was also shown to be recyclable, and was reused several times without significant loss in activity.
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Affiliation(s)
- Bingbing Lai
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Hongshan District, Wuhan, 430074, P. R. China
| | - Fuming Mei
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Hongshan District, Wuhan, 430074, P. R. China
| | - Yanlong Gu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Hongshan District, Wuhan, 430074, P. R. China.,State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, P. R. China
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35
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Reddy RJ, Shankar A, Waheed M, Nanubolu JB. Metal-free, highly regioselective sulfonylation of NH-1,2,3-triazoles with sodium sulfinates and thiosulfonates. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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36
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Magnetically recoverable copper ferrite catalyzed cascade synthesis of 4-Aryl-1H-1,2,3-triazoles under microwave irradiation. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.03.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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37
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Gupta S, Chandna N, Singh AK, Jain N. Regioselective Synthesis of N 2-Alkylated-1,2,3 Triazoles and N 1-Alkylated Benzotriazoles: Cu 2S as a Recyclable Nanocatalyst for Oxidative Amination of N, N-Dimethylbenzylamines. J Org Chem 2018; 83:3226-3235. [PMID: 29463081 DOI: 10.1021/acs.joc.8b00107] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Copper chalcogenide nanoparticles (Cu2S) synthesized for the first time from a single-source precursor, CuSPh, act as highly efficient and reusable heterogeneous catalyst for regioselective amination of N, N-dimethylbenzylamines with various azoles. The reaction involves N-H/C-H cross-dehydrogenative coupling (CDC) and demonstrates wide functional group tolerance. It provides highly selective access to N1-alkylated benzotriazoles, N2-alkylated 1,2,3-triazoles and 4-phenyl-1,2,3-triazoles, and N-alkylated carbazoles in 70-89% yields under solvent-free conditions. The Cu2S nanocatalyst has been characterized by PXRD, XPS, SEM-EDX, and HR-TEM analysis. Mechanistic studies suggest that the reaction follows a radical pathway and involves an iminium ion intermediate.
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Affiliation(s)
- Sonu Gupta
- Department of Chemistry , Indian Institute of Technology , New Delhi , India 110016
| | - Nisha Chandna
- Department of Chemistry , Indian Institute of Technology , New Delhi , India 110016
| | - Ajai K Singh
- Department of Chemistry , Indian Institute of Technology , New Delhi , India 110016
| | - Nidhi Jain
- Department of Chemistry , Indian Institute of Technology , New Delhi , India 110016
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38
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Swarup HA, Kemparajegowda, Mantelingu K, Rangappa KS. Effective and Transition-Metal-Free Construction of Disubstituted, Trisubstituted 1,2,3-NH-Triazoles and Triazolo Pyridazine via Intermolecular 1,3-Dipolar Cycloaddition Reaction. ChemistrySelect 2018. [DOI: 10.1002/slct.201702547] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hassan. A. Swarup
- Department of Studies in Chemistry; University of Mysore, Manasagangotri; Mysuru-570006 Karnataka India
| | - Kemparajegowda
- Department of Studies in Chemistry; University of Mysore, Manasagangotri; Mysuru-570006 Karnataka India
| | - Kempegowda Mantelingu
- Department of Studies in Chemistry; University of Mysore, Manasagangotri; Mysuru-570006 Karnataka India
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39
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Jannapu Reddy R, Waheed M, Karthik T, Shankar A. An efficient synthesis of 4,5-disubstituted-2H-1,2,3-triazoles from nitroallylic derivatives via a cycloaddition–denitration process. NEW J CHEM 2018. [DOI: 10.1039/c7nj03292g] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A variety of nitroallylic derivatives were smoothly reacted with sodium azide in the presence of p-TsOH to form synthetically-viable triazoles.
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Affiliation(s)
| | - Md. Waheed
- Department of Chemistry
- Osmania University
- Hyderabad 500 007
- India
| | | | - Angothu Shankar
- Department of Chemistry
- Osmania University
- Hyderabad 500 007
- India
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40
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Liu Y, Yang J, Ma X, Han C, Jiang Y. Metal-Free Synthesis of Etherified 3-(1H-1,2,3-Triazol-1-yl)phenyl Iodides through O-H Arylation/C-H Iodination with Diacetoxyiodobenzenes. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yaowen Liu
- Faculty of Science; Kunming University of Science and Technology; Jingming South Road 727 650500 Kunming China
| | - Jianhua Yang
- Faculty of Science; Kunming University of Science and Technology; Jingming South Road 727 650500 Kunming China
| | - Xinyuan Ma
- Faculty of Science; Kunming University of Science and Technology; Jingming South Road 727 650500 Kunming China
| | - Chunmei Han
- Faculty of Science; Kunming University of Science and Technology; Jingming South Road 727 650500 Kunming China
| | - Yubo Jiang
- Faculty of Science; Kunming University of Science and Technology; Jingming South Road 727 650500 Kunming China
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41
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Jana S, Vroemans R, Dehaen W. Synthesis of Polycyclic Dihydroindoles by Selective Decomposition of Bis(1,2,3-triazoles) Mediated by Rhodium Catalysis. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700756] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Sampad Jana
- Molecular Design and Synthesis; Department of Chemistry; KU Leuven; Celestijnenlaan 200F, B- 3001 Leuven Belgium
| | - Robby Vroemans
- Molecular Design and Synthesis; Department of Chemistry; KU Leuven; Celestijnenlaan 200F, B- 3001 Leuven Belgium
| | - Wim Dehaen
- Molecular Design and Synthesis; Department of Chemistry; KU Leuven; Celestijnenlaan 200F, B- 3001 Leuven Belgium
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42
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Hui R, Zhao M, Chen M, Ren Z, Guan Z. One-Pot Synthesis of 4-Aryl-NH-1,2,3-Triazoles through Three-Component Reaction of Aldehydes, Nitroalkanes and NaN3. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201700367] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Rongrong Hui
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science; Northwest University, Xi'an; Shaanxi 710127 China
| | - Mina Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science; Northwest University, Xi'an; Shaanxi 710127 China
- Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering; Baoji University of Arts and Sciences; Baoji Shaanxi 721013 China
| | - Ming Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science; Northwest University, Xi'an; Shaanxi 710127 China
| | - Zhihui Ren
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science; Northwest University, Xi'an; Shaanxi 710127 China
| | - Zhenghui Guan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Department of Chemistry & Materials Science; Northwest University, Xi'an; Shaanxi 710127 China
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43
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Medvedeva AS, Demina MM, Kon'kova TV, Nguyen TLH, Afonin AV, Ushakov IA. Microwave assisted solvent- and catalyst-free three-component synthesis of NH-1,2,3-triazoloimines. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.05.077] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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44
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Jana S, Iram S, Thomas J, Liekens S, Dehaen W. Synthesis and anticancer activity of novel aza-artemisinin derivatives. Bioorg Med Chem 2017; 25:3671-3676. [DOI: 10.1016/j.bmc.2017.04.041] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 04/26/2017] [Accepted: 04/28/2017] [Indexed: 11/30/2022]
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45
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Vergara-Arenas BI, Lomas-Romero L, Ángeles-Beltrán D, Negrón-Silva GE, Gutiérrez-Carrillo A, Lara VH, Morales-Serna JA. Multicomponent synthesis of 4-aryl- NH -1,2,3-triazoles in the presence of Al-MCM-41 and sulfated zirconia. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.055] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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46
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Deng X, Lei X, Nie G, Jia L, Li Y, Chen Y. Copper-Catalyzed Cross-Dehydrogenative N 2-Coupling of NH-1,2,3-Triazoles with N,N -Dialkylamides: N-Amidoalkylation of NH-1,2,3-Triazoles. J Org Chem 2017; 82:6163-6171. [PMID: 28558242 DOI: 10.1021/acs.joc.7b00752] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
An efficient copper-catalyzed C-N bond formation by N-H/C-H cross-dehydrogenative coupling (CDC) between NH-1,2,3-triazoles and N,N-dialkylamides has been developed. The method provided N-amidoalkylated 1,2,3-triazoles with moderate to high yields, and the reactions showed high N2-selectivities when 4,5-disubstituted NH-1,2,3-triazoles served as the substrates.
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Affiliation(s)
- Xiaocong Deng
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology , Wuhan 430073, People's Republic of China
| | - Xue Lei
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology , Wuhan 430073, People's Republic of China
| | - Gang Nie
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology , Wuhan 430073, People's Republic of China
| | - Lihui Jia
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology , Wuhan 430073, People's Republic of China
| | - Yuanxiang Li
- College of Chemistry and Materials Engineering, Huaihua University , Huaihua 418008, People's Republic of China
| | - Yunfeng Chen
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology , Wuhan 430073, People's Republic of China
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47
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Jana S, Iram S, Thomas J, Hayat MQ, Pannecouque C, Dehaen W. Application of the Triazolization Reaction to Afford Dihydroartemisinin Derivatives with Anti-HIV Activity. Molecules 2017; 22:molecules22020303. [PMID: 28218680 PMCID: PMC6155659 DOI: 10.3390/molecules22020303] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 02/10/2017] [Accepted: 02/11/2017] [Indexed: 12/12/2022] Open
Abstract
Artemisinin and synthetic derivatives of dihydroartemisinin are known to possess various biological activities. Post-functionalization of dihydroartemisinin with triazole heterocycles has been proven to lead to enhanced therapeutic potential. By using our newly developed triazolization strategy, a library of unexplored fused and 1,5-disubstituted 1,2,3-triazole derivatives of dihydroartemisinin were synthesized in a single step. All these newly synthesized compounds were characterized and evaluated for their anti-HIV (Human Immunodeficiency Virus) potential in MT-4 cells. Interestingly; three of the synthesized triazole derivatives of dihydroartemisinin showed activities with half maximal inhibitory concentration (IC50) values ranging from 1.34 to 2.65 µM.
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Affiliation(s)
- Sampad Jana
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium.
| | - Shabina Iram
- Department of Plant Biotechnology, Atta-Ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), H-12 Islamabad, Pakistan.
| | - Joice Thomas
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium.
| | - Muhammad Qasim Hayat
- Department of Plant Biotechnology, Atta-Ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), H-12 Islamabad, Pakistan.
| | - Christophe Pannecouque
- Department of Microbiology and Immunology, Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, Herestraat 49, B-3000 Leuven, Belgium.
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium.
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48
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Zhang Y, Wang S, Liu Y, Jin Y, Xia Y, Song B. Bilayers directly scrolling up to form nanotubes via self-assembly of an achiral small molecule. NANOSCALE 2017; 9:1491-1495. [PMID: 28067401 DOI: 10.1039/c6nr09269a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The self-assembly behavior of a molecule composed of an azobenzene segment, carboxylic-acid group and flexible alkyl chains (denoted by ABA11) was studied as an extension of our proceeding work. We have previously reported that in DMSO solution ABA11 self-assembled into nanotubes starting from nanosheets and experiencing a meta-state of helical ribbons. Herein, we found that changing the solvent can also affect the self-assembly pathway of ABA11 to nanotubes. When DMSO was replaced by ethanol, the nanosheets formed by ABA11 bilayers either directly scrolled up to form nanotubes without a meta-state of helical ribbons at low concentrations, or stacked up to form nanobricks at higher concentrations. In addition, increasing the water content in ethanol can significantly facilitate the formation of the assembled nanostructures.
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Affiliation(s)
- Yajun Zhang
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Shuai Wang
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Yanfeng Liu
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Yingzhi Jin
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Yijun Xia
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Bo Song
- Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
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49
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Ren A, Lu P, Wang Y. Convenient preparation of 4-diazoisochroman-3-imines and 3-subsituted 3,5-dihydroisochromeno[3,4-d][1,2,3]triazoles. Chem Commun (Camb) 2017; 53:3769-3772. [DOI: 10.1039/c7cc00603a] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
4-Diazoisochroman-3-imines were prepared via the Cu(i)-catalyzed reaction of (2-ethynylphenyl)methanols with sulfonyl azides, and converted to 3,5-dihydroisochromeno[3,4-d][1,2,3]triazoles by reaction with primary amines under catalyst-free conditions.
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Affiliation(s)
- Anni Ren
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Ping Lu
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Yanguang Wang
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- P. R. China
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50
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Thomas J, Jana S, Sonawane M, Fiey B, Balzarini J, Liekens S, Dehaen W. A new four-component reaction involving the Michael addition and the Gewald reaction, leading to diverse biologically active 2-aminothiophenes. Org Biomol Chem 2017; 15:3892-3900. [DOI: 10.1039/c7ob00707h] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A Gewald-four component reaction has been successfully developed for the synthesis of a series of compounds containing an indole and a 2-aminothiophene moiety separated by a methylene spacer having anti-proliferative activity.
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Affiliation(s)
- Joice Thomas
- Molecular Design and Synthesis
- Department of Chemistry
- KU Leuven
- 3001 Leuven
- Belgium
| | - Sampad Jana
- Molecular Design and Synthesis
- Department of Chemistry
- KU Leuven
- 3001 Leuven
- Belgium
| | - Mahendra Sonawane
- Molecular Design and Synthesis
- Department of Chemistry
- KU Leuven
- 3001 Leuven
- Belgium
| | - Bert Fiey
- Molecular Design and Synthesis
- Department of Chemistry
- KU Leuven
- 3001 Leuven
- Belgium
| | - Jan Balzarini
- Department of Microbiology and Immunology
- Rega Institute for Medical Research
- Herestraat 49
- KU Leuven
- B-3000 Leuven
| | - Sandra Liekens
- Department of Microbiology and Immunology
- Rega Institute for Medical Research
- Herestraat 49
- KU Leuven
- B-3000 Leuven
| | - Wim Dehaen
- Molecular Design and Synthesis
- Department of Chemistry
- KU Leuven
- 3001 Leuven
- Belgium
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