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Guo M, Huang X, Li S, Ma W, Liu A, Zhang X, Kuang Q, Cheng L, Song Y, Hu X, Yuan J. Synthesis of Substituted of Benzo[4,5]imidazo[1,2- a]pyrimidines through (3 + 2+1) Cyclization of 2-Aminobenzimidazole, Acetophenone, and N, N-Dimethylformamide as One-Carbon Synthon. J Org Chem 2023. [PMID: 37699595 DOI: 10.1021/acs.joc.3c01227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
An efficient method for the construction of benzo[4,5]imidazo[1,2-a]pyrimidines using N,N-dimethylformamide as a one-carbon source and 2-aminobenzimidazoles and acetophenone as substrates through a one-pot, three-component cascade reaction is described. Spectra investigations indicated the fluorescent properties of selected products, exhibiting quantum yields 0.07-0.16 with maxima absorption at 266-294 nm and emission at 472-546 nm.
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Affiliation(s)
- Mengyi Guo
- Department of Medicinal Chemistry, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Xin Huang
- Department of Medicinal Chemistry, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Suzhen Li
- Department of Medicinal Chemistry, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Wanqian Ma
- Department of Medicinal Chemistry, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Aqin Liu
- Department of Medicinal Chemistry, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Xiuyu Zhang
- Department of Medicinal Chemistry, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Qiulin Kuang
- Department of Medicinal Chemistry, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Luoteng Cheng
- Department of Medicinal Chemistry, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Yibo Song
- Department of Medicinal Chemistry, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Xueyuan Hu
- Department of Medicinal Chemistry, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Jianyong Yuan
- Department of Medicinal Chemistry, College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
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Fedotov VV, Valieva MI, Taniya OS, Aminov SV, Kharitonov MA, Novikov AS, Kopchuk DS, Slepukhin PA, Zyryanov GV, Ulomsky EN, Rusinov VL, Charushin VN. 4-(Aryl)-Benzo[4,5]imidazo[1,2- a]pyrimidine-3-Carbonitrile-Based Fluorophores: Povarov Reaction-Based Synthesis, Photophysical Studies, and DFT Calculations. Molecules 2022; 27:molecules27228029. [PMID: 36432130 PMCID: PMC9698514 DOI: 10.3390/molecules27228029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/15/2022] [Accepted: 11/15/2022] [Indexed: 11/22/2022] Open
Abstract
A series of novel 4-(aryl)-benzo[4,5]imidazo[1,2-a]pyrimidine-3-carbonitriles were obtained through the Povarov (aza-Diels-Alder) and oxidation reactions, starting from benzimidazole-2-arylimines. Based on the literature data and X-ray diffraction analysis, it was discovered that during the Povarov reaction, [1,3] sigmatropic rearrangement leading to dihydrobenzimidazo[1,2-a]pyrimidines took place. The structures of all the obtained compounds were confirmed based on the data from 1H- and 13C-NMR spectroscopy, IR spectroscopy, and elemental analysis. For all the obtained compounds, their photophysical properties were studied. In all the cases, a positive emission solvatochromism with Stokes shifts from 120 to 180 nm was recorded. Aggregation-Induced Emission (AIE) has been illustrated for compound 6c using different water fractions (fw) in THF. The compounds 6c and 6f demonstrated changes in emission maxima or/and intensities after mechanical stimulation.
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Affiliation(s)
- Victor V. Fedotov
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
- Correspondence: (V.V.F.); (O.S.T.)
| | - Maria I. Valieva
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Olga S. Taniya
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
- Correspondence: (V.V.F.); (O.S.T.)
| | - Semen V. Aminov
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Mikhail A. Kharitonov
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Alexander S. Novikov
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia
| | - Dmitry S. Kopchuk
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Pavel A. Slepukhin
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Grigory V. Zyryanov
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Evgeny N. Ulomsky
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Vladimir L. Rusinov
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Valery N. Charushin
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
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Crystal structure of 1 H-1,2,3-Triazolo[4,5- b]-pyridin-4-ium nitrate, C 5H 5N 5O 3. Z KRIST-NEW CRYST ST 2022. [DOI: 10.1515/ncrs-2022-0145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C5H5N5O3, orthorhombic, Pnma (no. 62), a = 13.4643(13) Å, b = 6.2866(10) Å, c = 9.1138(9) Å, V = 771.43(16) Å3, Z = 4, R
gt
(F) = 0.0517, wR
ref
(F
2) = 0.1317, T = 293 K.
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Zurnacı M, Şener İ, Gür M, Şener N. Study on Photophysical Properties of Novel Fluorescent Phenanthroimidazole-Thiadiazole Hybrid Derivatives. J Fluoresc 2022; 32:1155-1169. [PMID: 35325349 DOI: 10.1007/s10895-022-02916-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 02/25/2022] [Indexed: 11/30/2022]
Abstract
Phenanthroimidazole-thiadiazole hybrid derivatives, which are new heterocyclic compounds with fluorescence properties, were synthesized by designing a two-step reaction mechanism and their photophysical properties were investigated. The synthesized derivatives were purified and their structures were elucidated by ATR-IR, 1H-NMR, elemental analysis and HR-MS methods. In the next stage of the study, the absorption and emission spectra of the synthesized new phenanthroimidazole-thiadiazole hybrid derivatives were determined by UV-Vis and fluorescence spectroscopy. Stokes' shifts, molar extinction coefficients (ε), singlet energy levels (Es), quantum yield (ϕf), lifetimes (τ), the radiative (kr) and the nonradiative (knr) constant for new hybrid derivatives were measured in DMSO. In addition, aggregation measurements, which is an important parameter that changes the photophysical properties were performed and for these compounds, structure: photophysical properties were discussed.
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Affiliation(s)
- Merve Zurnacı
- Central Research Laboratory, Kastamonu University, 37200, Kastamonu, Turkey.
| | - İzzet Şener
- Department of Food Engineering, Faculty of Engineering and Architecture, Kastamonu University, 37200, Kastamonu, Turkey
| | - Mahmut Gür
- Department of Forest Industrial Engineering, Faculty of Forestry, Kastamonu University, 37200, Kastamonu, Turkey
| | - Nesrin Şener
- Department of Chemistry, Faculty of Art and Science, Kastamonu University, 37200, Kastamonu, Turkey
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Savateev KV, Fedotov VV, Rusinov VL, Kotovskaya SK, Spasov AA, Kucheryavenko AF, Vasiliev PM, Kosolapov VA, Sirotenko VS, Gaidukova KA, Uskov GM. Azolo[1,5- a]pyrimidines and Their Condensed Analogs with Anticoagulant Activity. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27010274. [PMID: 35011506 PMCID: PMC8746358 DOI: 10.3390/molecules27010274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 12/27/2021] [Accepted: 12/29/2021] [Indexed: 12/23/2022]
Abstract
Hypercytokinemia, or cytokine storm, is one of the severe complications of viral and bacterial infections, involving the release of abnormal amounts of cytokines, resulting in a massive inflammatory response. Cytokine storm is associated with COVID-19 and sepsis high mortality rate by developing epithelial dysfunction and coagulopathy, leading to thromboembolism and multiple organ dysfunction syndrome. Anticoagulant therapy is an important tactic to prevent thrombosis in sepsis and COVID-19, but recent data show the incompatibility of modern direct oral anticoagulants and antiviral agents. It seems relevant to develop dual-action drugs with antiviral and anticoagulant properties. At the same time, it was shown that azolo[1,5-a]pyrimidines are heterocycles with a broad spectrum of antiviral activity. We have synthesized a new family of azolo[1,5-a]pyrimidines and their condensed polycyclic analogs by cyclocondensation reactions and direct CH-functionalization and studied their anticoagulant properties. Five compounds among 1,2,4-triazolo[1,5-a]pyrimidin-7-ones and 5-alkyl-1,3,4-thiadiazolo[3,2-a]purin-8-ones demonstrated higher anticoagulant activity than the reference drug, dabigatran etexilate. Antithrombin activity of most active compounds was confirmed using lipopolysaccharide (LPS)-treated blood to mimic the conditions of cytokine release syndrome. The studied compounds affected only the thrombin time value, reliably increasing it 6.5–15.2 times as compared to LPS-treated blood.
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Affiliation(s)
- Konstantin V. Savateev
- Department of Organic and Biomolecular Chemistry, Ural Federal University Named after the First President of Russia B.N. Eltsin, Mira St. 19, 620002 Yekaterinburg, Russia; (V.V.F.); (V.L.R.); (S.K.K.)
- Correspondence:
| | - Victor V. Fedotov
- Department of Organic and Biomolecular Chemistry, Ural Federal University Named after the First President of Russia B.N. Eltsin, Mira St. 19, 620002 Yekaterinburg, Russia; (V.V.F.); (V.L.R.); (S.K.K.)
| | - Vladimir L. Rusinov
- Department of Organic and Biomolecular Chemistry, Ural Federal University Named after the First President of Russia B.N. Eltsin, Mira St. 19, 620002 Yekaterinburg, Russia; (V.V.F.); (V.L.R.); (S.K.K.)
| | - Svetlana K. Kotovskaya
- Department of Organic and Biomolecular Chemistry, Ural Federal University Named after the First President of Russia B.N. Eltsin, Mira St. 19, 620002 Yekaterinburg, Russia; (V.V.F.); (V.L.R.); (S.K.K.)
| | - Alexandr A. Spasov
- Department of Pharmacology and Bioinformatics, Volgograd State Medical University, Pavshikh Bortsov Sq. 1, 400131 Volgograd, Russia; (A.A.S.); (A.F.K.); (P.M.V.); (V.A.K.); (V.S.S.); (K.A.G.); (G.M.U.)
| | - Aida F. Kucheryavenko
- Department of Pharmacology and Bioinformatics, Volgograd State Medical University, Pavshikh Bortsov Sq. 1, 400131 Volgograd, Russia; (A.A.S.); (A.F.K.); (P.M.V.); (V.A.K.); (V.S.S.); (K.A.G.); (G.M.U.)
| | - Pavel M. Vasiliev
- Department of Pharmacology and Bioinformatics, Volgograd State Medical University, Pavshikh Bortsov Sq. 1, 400131 Volgograd, Russia; (A.A.S.); (A.F.K.); (P.M.V.); (V.A.K.); (V.S.S.); (K.A.G.); (G.M.U.)
| | - Vadim A. Kosolapov
- Department of Pharmacology and Bioinformatics, Volgograd State Medical University, Pavshikh Bortsov Sq. 1, 400131 Volgograd, Russia; (A.A.S.); (A.F.K.); (P.M.V.); (V.A.K.); (V.S.S.); (K.A.G.); (G.M.U.)
| | - Victor S. Sirotenko
- Department of Pharmacology and Bioinformatics, Volgograd State Medical University, Pavshikh Bortsov Sq. 1, 400131 Volgograd, Russia; (A.A.S.); (A.F.K.); (P.M.V.); (V.A.K.); (V.S.S.); (K.A.G.); (G.M.U.)
| | - Kseniya A. Gaidukova
- Department of Pharmacology and Bioinformatics, Volgograd State Medical University, Pavshikh Bortsov Sq. 1, 400131 Volgograd, Russia; (A.A.S.); (A.F.K.); (P.M.V.); (V.A.K.); (V.S.S.); (K.A.G.); (G.M.U.)
| | - Georgiy M. Uskov
- Department of Pharmacology and Bioinformatics, Volgograd State Medical University, Pavshikh Bortsov Sq. 1, 400131 Volgograd, Russia; (A.A.S.); (A.F.K.); (P.M.V.); (V.A.K.); (V.S.S.); (K.A.G.); (G.M.U.)
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Debnath S, Parveen S, Pradhan P, Das I, Das T. Benzo[4,5]imidazo[1,2- a]pyridines and benzo[4,5]imidazo[1,2- a]pyrimidines: recent advancements in synthesis of two diversely important heterocyclic motifs and their derivatives. NEW J CHEM 2022. [DOI: 10.1039/d2nj00546h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nitrogen heterocycles are some of the most important compounds that are found in nature or synthesized otherwise.
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Affiliation(s)
| | - Syaleena Parveen
- Department of Chemistry, NIT Jamshedpur, Jamshedpur 831014, India
| | | | - Ipsita Das
- Department of Chemistry, NIT Jamshedpur, Jamshedpur 831014, India
| | - Tapas Das
- Department of Chemistry, NIT Jamshedpur, Jamshedpur 831014, India
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