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Romanov AR, Kondrashov EV, Zinchenko SV. Synthesis of 5-(trifluoroacetyl)imidazoles from Bromoenones and Benzimidamides via Aza-Michael Initiated Ring Closure Reaction. Curr Org Synth 2024; 21:195-209. [PMID: 37078355 DOI: 10.2174/1570179420666230420100643] [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: 09/12/2022] [Revised: 02/08/2023] [Accepted: 02/21/2023] [Indexed: 04/21/2023]
Abstract
INTRODUCTION A simple method for the preparation of 5-(trifluoroacetyl)imidazoles was elaborated. METHODS The reaction of trifluoromethyl(α-bromoalkenyl)ketones with benzimidamides was employed to afford the target heterocycles in good yields. RESULTS The assembly of imidazole core proceeds via aza-Michael adduct formation followed by intramolecular nucleophilic substitution and spontaneous aromatization as an oxidation sequence. CONCLUSION The yields of target imidazoles can be improved by the use of soft oxidizing agents.
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Affiliation(s)
- Alexey R Romanov
- The Laboratory of Halogen Organic Compound, A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, 664033, Russia
| | - Evgeniy V Kondrashov
- The Laboratory of Halogen Organic Compound, A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, 664033, Russia
| | - Sergey V Zinchenko
- The Laboratory of Halogen Organic Compound, A. E. Favorsky Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk, 664033, Russia
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2
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Němec V, Khirsariya P, Janovská P, Moyano PM, Maier L, Procházková P, Kebková P, Gybel' T, Berger BT, Chaikuad A, Reinecke M, Kuster B, Knapp S, Bryja V, Paruch K. Discovery of Potent and Exquisitely Selective Inhibitors of Kinase CK1 with Tunable Isoform Selectivity. Angew Chem Int Ed Engl 2023; 62:e202217532. [PMID: 36625768 DOI: 10.1002/anie.202217532] [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: 11/28/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/11/2023]
Abstract
Casein kinases 1 (CK1) are key signaling molecules that have emerged recently as attractive therapeutic targets in particular for the treatment of hematological malignancies. Herein, we report the identification of a new class of potent and highly selective inhibitors of CK1α, δ and ϵ. Based on their optimal in vitro and in vivo profiles and their exclusive selectivity, MU1250, MU1500 and MU1742 were selected as quality chemical probes for those CK1 isoforms. At proper concentrations, MU1250 and MU1500 allow for specific targeting of CK1δ or dual inhibition of CK1δ/ϵ in cells. The compound MU1742 also efficiently inhibits CK1α and, to our knowledge, represents the first potent and highly selective inhibitor of this enzyme. In addition, we demonstrate that the central 1H-pyrrolo[2,3-b]pyridine-imidazole pharmacophore can be used as the basis of highly selective inhibitors of other therapeutically relevant protein kinases, e.g. p38α, as exemplified by the compound MU1299.
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Affiliation(s)
- Václav Němec
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic.,International Clinical Research Centre, St. Anne's University Hospital, Pekařská 53, Brno, 656 91, Czech Republic
| | - Prashant Khirsariya
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic.,International Clinical Research Centre, St. Anne's University Hospital, Pekařská 53, Brno, 656 91, Czech Republic
| | - Pavlína Janovská
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic
| | - Paula Martín Moyano
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic
| | - Lukáš Maier
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic.,International Clinical Research Centre, St. Anne's University Hospital, Pekařská 53, Brno, 656 91, Czech Republic
| | - Petra Procházková
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic
| | - Pavlína Kebková
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic
| | - Tomáš Gybel'
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic
| | - Benedict-Tilman Berger
- Institute for Pharmaceutical Chemistry, Structural Genomics Consortium, Johann Wolfgang Goethe-University, Max-von-Laue-Strasse 15, 60438, Frankfurt am Main, Germany
| | - Apirat Chaikuad
- Institute for Pharmaceutical Chemistry, Structural Genomics Consortium, Johann Wolfgang Goethe-University, Max-von-Laue-Strasse 15, 60438, Frankfurt am Main, Germany
| | - Maria Reinecke
- Chair of Proteomics and Bioanalytics, TUM School of Life Sciences, Technical University of Munich, 85354, Freising, Germany
| | - Bernhard Kuster
- Chair of Proteomics and Bioanalytics, TUM School of Life Sciences, Technical University of Munich, 85354, Freising, Germany.,Bavarian Center for Biomolecular Mass Spectrometry (BayBioMS), Technical University of Munich, 85354, Freising, Germany
| | - Stefan Knapp
- Institute for Pharmaceutical Chemistry, Structural Genomics Consortium, Johann Wolfgang Goethe-University, Max-von-Laue-Strasse 15, 60438, Frankfurt am Main, Germany
| | - Vítězslav Bryja
- Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic
| | - Kamil Paruch
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, Brno, 625 00, Czech Republic.,International Clinical Research Centre, St. Anne's University Hospital, Pekařská 53, Brno, 656 91, Czech Republic
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3
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Xu H, Chen H, Hu X, Xuan G, Li P, Zhang Z. Synthesis of Fully Substituted 5-( o-Hydroxybenzoyl)imidazoles via Iodine-Promoted Domino Reaction of Aurones with Amidines. J Org Chem 2022; 87:16204-16212. [PMID: 36414000 DOI: 10.1021/acs.joc.2c01680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
An iodine-promoted domino reaction of aurones with amidines has been successfully explored. The reaction proceeds in a consecutive manner containing Michael addition, iodination, cyclization from intramolecular nucleophilic substitution, and dehydrogenative aromatization from spiro ring opening. Following this novel strategy, a variety of 1,2,4-trisubstituted 5-(o-hydroxybenzoyl)imidazoles were efficiently synthesized in moderate to good yields from readily available starting materials. A plausible mechanism has been proposed.
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Affiliation(s)
- Hui Xu
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry Application, and School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
| | - Hong Chen
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry Application, and School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
| | - Xiao Hu
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry Application, and School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
| | - Guang Xuan
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry Application, and School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
| | - Pinhua Li
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry Application, and School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
| | - Ze Zhang
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry Application, and School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, P. R. China
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4
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Al-Zaydi KM, Saleh TS, Alqahtani NF, Bagazi MS. Q-Tube Assisted Green Synthesis of Bis(Azoles) and Bis(Azines) Linked to Arene Unit. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2080724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Khadijah M. Al-Zaydi
- Department of Chemistry, College of Science, University of Jeddah, Jeddah, Saudi Arabia
| | - Tamer S. Saleh
- Department of Chemistry, College of Science, University of Jeddah, Jeddah, Saudi Arabia
- Green Chemistry Department, National Research Centre, Dokki, Giza, Egypt
| | - Norah F. Alqahtani
- Department of Chemistry, College of Science, University of Jeddah, Jeddah, Saudi Arabia
| | - Meaad S. Bagazi
- Department of Chemistry, College of Science, University of Jeddah, Jeddah, Saudi Arabia
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5
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Kohan E, Gholamhosseini-Nazari M, Allahvirdinesbat M, Alemi AA. Green and efficiently synthesized tetrasubstituted imidazole: introduced bismuth oxide co-doped Lu 3+, Er 3+ as a novel reusable heterogeneous nanocatalyst. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2020.1814327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Elmira Kohan
- Faculty of Chemistry, University of Tabriz, Tabriz, Iran
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6
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Lohitha N, Vijayakumar V. Imidazole Appended Novel Phenoxyquinolines as New Inhibitors of α-Amylase and α-Glucosidase Evidenced with Molecular Docking Studies. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1939069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- N. Lohitha
- Centre for Organic and Medicinal Chemistry, VIT University, Vellore, India
| | - V. Vijayakumar
- Centre for Organic and Medicinal Chemistry, VIT University, Vellore, India
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7
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Gałczyńska K, Rachuna J, Ciepluch K, Kowalska M, Wąsik S, Kosztołowicz T, Lewandowska KD, Semaniak J, Kurdziel K, Arabski M. Experimental and Theoretical Analysis of Metal Complex Diffusion through Cell Monolayer. ENTROPY 2021; 23:e23030360. [PMID: 33802897 PMCID: PMC8002612 DOI: 10.3390/e23030360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/11/2021] [Accepted: 03/15/2021] [Indexed: 01/12/2023]
Abstract
The study of drugs diffusion through different biological membranes constitutes an essential step in the development of new pharmaceuticals. In this study, the method based on the monolayer cell culture of CHO-K1 cells has been developed in order to emulate the epithelial cells barrier in permeability studies by laser interferometry. Laser interferometry was employed for the experimental analysis of nickel(II) and cobalt(II) complexes with 1-allylimidazole or their chlorides’ diffusion through eukaryotic cell monolayers. The amount (mol) of nickel(II) and cobalt(II) chlorides transported through the monolayer was greater than that of metals complexed with 1-allylimidazole by 4.34-fold and 1.45-fold, respectively, after 60 min. Thus, laser interferometry can be used for the quantitative analysis of the transport of compounds through eukaryotic cell monolayers, and the resulting parameters can be used to formulate a mathematical description of this process.
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Affiliation(s)
- Katarzyna Gałczyńska
- Institute of Biology, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland; (K.G.); (J.R.); (K.C.); (M.K.)
| | - Jarosław Rachuna
- Institute of Biology, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland; (K.G.); (J.R.); (K.C.); (M.K.)
| | - Karol Ciepluch
- Institute of Biology, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland; (K.G.); (J.R.); (K.C.); (M.K.)
| | - Magdalena Kowalska
- Institute of Biology, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland; (K.G.); (J.R.); (K.C.); (M.K.)
| | - Sławomir Wąsik
- Institute of Physics, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland; (S.W.); (T.K.); (J.S.)
| | - Tadeusz Kosztołowicz
- Institute of Physics, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland; (S.W.); (T.K.); (J.S.)
| | - Katarzyna D. Lewandowska
- Department of Radiological Informatics and Statistics, Medical University of Gdańsk, Tuwima 15, 80-210 Gdańsk, Poland;
| | - Jacek Semaniak
- Institute of Physics, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland; (S.W.); (T.K.); (J.S.)
| | - Krystyna Kurdziel
- Institute of Chemistry, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland;
| | - Michał Arabski
- Institute of Biology, Jan Kochanowski University, Uniwersytecka 7, 25-406 Kielce, Poland; (K.G.); (J.R.); (K.C.); (M.K.)
- Correspondence: ; Tel./Fax: +48-41-349-63-31
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8
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Selective targeting of the αC and DFG-out pocket in p38 MAPK. Eur J Med Chem 2020; 208:112721. [DOI: 10.1016/j.ejmech.2020.112721] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/31/2020] [Accepted: 08/01/2020] [Indexed: 12/25/2022]
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9
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Bulut O, Oktem HA, Yilmaz MD. A highly substituted and fluorescent aromatic-fused imidazole derivative that shows enhanced antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA). JOURNAL OF HAZARDOUS MATERIALS 2020; 399:122902. [PMID: 32512278 DOI: 10.1016/j.jhazmat.2020.122902] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/23/2020] [Accepted: 05/01/2020] [Indexed: 06/11/2023]
Abstract
A novel highly substituted and fluorescent aromatic-fused imidazole derivative has been synthesized by rational design. This novel fluorescent material acts as an alternative antibacterial agent against Gram positive bacteria strains. It shows superior antibacterial activity (with MIC value of 8 μg/mL) against methicillin-resistant Staphylococcus aureus (MRSA) when compared with standard antibiotic drugs Ampicillin (with MIC value of 128 μg/mL) and Kanamycin (with MIC value of >512 μg/mL). The interaction of this novel compound with the bacterial cell and genomic DNA has also been studied to elucidate antibacterial mode of action. Fluorescence spectroscopy and microscopy studies have proved the intracellular uptake of this special compound. Likewise, UV-vis and fluorescence spectroscopy studies have revealed a significant decrease in the absorption and emission bands of the compound upon its interaction with plasmid and genomic DNA, which is likely due to its DNA intercalation property. Furthermore, these findings have been supported by gel electrophoresis of genomic DNA of S. aureus cells treated with the compound. The results indicate that this novel compound exerts its antibacterial activity by causing DNA damage, suggesting the potential utility of fluorescent probes for real-time diagnosis and treatment of bacterial infections.
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Affiliation(s)
- Onur Bulut
- Department of Molecular Biology and Genetics, Faculty of Agriculture and Natural Sciences, Konya Food and Agriculture University, 42080 Konya, Turkey; Department of Biological Sciences, Middle East Technical University, 06800 Ankara, Turkey; Research and Development Center for Diagnostic Kits (KIT-ARGEM), Konya Food and Agriculture University, 42080 Konya, Turkey
| | - Huseyin Avni Oktem
- Department of Biological Sciences, Middle East Technical University, 06800 Ankara, Turkey; Nanobiz Technology Inc., Gallium Block No: 27 / 218, METU Technopolis, Ankara, Turkey
| | - M Deniz Yilmaz
- Research and Development Center for Diagnostic Kits (KIT-ARGEM), Konya Food and Agriculture University, 42080 Konya, Turkey; Department of Bioengineering, Faculty of Engineering and Architecture, Konya Food and Agriculture University, 42080 Konya, Turkey.
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10
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R. Sayed A, S. Al-Faiyz Y. Convenient Methods for the Synthesis of Novel Thiadiazoles and Polythiadiazoles. HETEROCYCLES 2020. [DOI: 10.3987/com-20-14254] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Li H, Prasad Reddy BR, Bi X. Transformation of Alkynes into α- or β-Difluorinated Alkyl Azides by an Efficient One-Pot Two-Step Procedure. Org Lett 2019; 21:9358-9362. [DOI: 10.1021/acs.orglett.9b03593] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Huaizhi Li
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Bhoomireddy Rajendra Prasad Reddy
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Xihe Bi
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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12
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Röhm S, Berger BT, Schröder M, Chaikuad A, Winkel R, Hekking KFW, Benningshof JJC, Müller G, Tesch R, Kudolo M, Forster M, Laufer S, Knapp S. Fast Iterative Synthetic Approach toward Identification of Novel Highly Selective p38 MAP Kinase Inhibitors. J Med Chem 2019; 62:10757-10782. [DOI: 10.1021/acs.jmedchem.9b01227] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Sandra Röhm
- Institute for Pharmaceutical Chemistry, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 9, D-60438 Frankfurt am Main, Germany
- Structural Genomics Consortium (SGC), Buchmann Institute for Life Sciences, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 15, D-60438 Frankfurt am Main, Germany
| | - Benedict-Tilman Berger
- Institute for Pharmaceutical Chemistry, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 9, D-60438 Frankfurt am Main, Germany
- Structural Genomics Consortium (SGC), Buchmann Institute for Life Sciences, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 15, D-60438 Frankfurt am Main, Germany
| | - Martin Schröder
- Institute for Pharmaceutical Chemistry, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 9, D-60438 Frankfurt am Main, Germany
- Structural Genomics Consortium (SGC), Buchmann Institute for Life Sciences, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 15, D-60438 Frankfurt am Main, Germany
| | - Apirat Chaikuad
- Institute for Pharmaceutical Chemistry, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 9, D-60438 Frankfurt am Main, Germany
- Structural Genomics Consortium (SGC), Buchmann Institute for Life Sciences, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 15, D-60438 Frankfurt am Main, Germany
| | - Rob Winkel
- Mercachem BV, Kerkenbos 1013, 6546 BB Nijmegen, The Netherlands
| | | | | | - Gerhard Müller
- Gotham Therapeutics, 430 East 29th Street, Alexandria Center, New York, New York 10016, United States
| | - Roberta Tesch
- Institute for Pharmaceutical Chemistry, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 9, D-60438 Frankfurt am Main, Germany
- Structural Genomics Consortium (SGC), Buchmann Institute for Life Sciences, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 15, D-60438 Frankfurt am Main, Germany
| | - Mark Kudolo
- Department of Pharmaceutical/Medicinal Chemistry, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Michael Forster
- Department of Pharmaceutical/Medicinal Chemistry, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Stefan Laufer
- Department of Pharmaceutical/Medicinal Chemistry, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Stefan Knapp
- Institute for Pharmaceutical Chemistry, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 9, D-60438 Frankfurt am Main, Germany
- Structural Genomics Consortium (SGC), Buchmann Institute for Life Sciences, Johann Wolfgang Goethe-University, Max-von-Laue-Str. 15, D-60438 Frankfurt am Main, Germany
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Somashekara B, Thippeswamy B, Vijayakumar GR. Synthesis, antioxidant and $$\alpha $$-amylase inhibition activity of naphthalene-containing 2,4,5-trisubstituted imidazole derivatives. J CHEM SCI 2019. [DOI: 10.1007/s12039-019-1639-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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14
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Design, Synthesis and Biological Evaluation of Isoxazole-Based CK1 Inhibitors Modified with Chiral Pyrrolidine Scaffolds. Molecules 2019; 24:molecules24050873. [PMID: 30832206 PMCID: PMC6429214 DOI: 10.3390/molecules24050873] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 02/23/2019] [Accepted: 02/27/2019] [Indexed: 01/27/2023] Open
Abstract
In this study, we report on the modification of a 3,4-diaryl-isoxazole-based CK1 inhibitor with chiral pyrrolidine scaffolds to develop potent and selective CK1 inhibitors. The pharmacophore of the lead structure was extended towards the ribose pocket of the adenosine triphosphate (ATP) binding site driven by structure-based drug design. For an upscale compatible multigram synthesis of the functionalized pyrrolidine scaffolds, we used a chiral pool synthetic route starting from methionine. Biological evaluation of key compounds in kinase and cellular assays revealed significant effects of the scaffolds towards activity and selectivity, however, the absolute configuration of the chiral moieties only exhibited a limited effect on inhibitory activity. X-ray crystallographic analysis of ligand-CK1δ complexes confirmed the expected binding mode of the 3,4-diaryl-isoxazole inhibitors. Surprisingly, the original compounds underwent spontaneous Pictet-Spengler cyclization with traces of formaldehyde during the co-crystallization process to form highly potent new ligands. Our data suggests chiral “ribose-like” pyrrolidine scaffolds have interesting potential for modifications of pharmacologically active compounds.
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15
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RETRACTED: Evaluation of imidazole and its derivative against Newcastle disease virus infection in chicken: A drug repurposing approach. Virus Res 2019; 260:114-122. [DOI: 10.1016/j.virusres.2018.11.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 11/27/2018] [Accepted: 11/27/2018] [Indexed: 11/20/2022]
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16
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Chen X, Wang Z, Huang H, Deng GJ. Elemental Sulfur-Promoted Aerobic Cyclization of Ketones and Aliphatic Amines for Synthesis of Tetrasubstituted Imidazoles. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800765] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xiangui Chen
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry; Xiangtan University; Xiangtan 411105 China
| | - Zhen Wang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry; Xiangtan University; Xiangtan 411105 China
| | - Huawen Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry; Xiangtan University; Xiangtan 411105 China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry; Xiangtan University; Xiangtan 411105 China
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17
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Stukalov A, Suslonov VV, Kuznetsov MA. Thermal Ring Expansion of 2-Sulfonylimidoyl-1-phthalimidoaziridines into N
-Sulfonylimidazoles. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701806] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Aleksandr Stukalov
- Institute of Chemistry; Saint Petersburg State University; Universitetskii pr. 26 198504 Saint Petersburg Russia
| | - Vitalii V. Suslonov
- Center for X-ray Diffraction Studies; Saint Petersburg State University; Universitetskii pr. 26 198504 Saint Petersburg Russia
| | - Mikhail A. Kuznetsov
- Institute of Chemistry; Saint Petersburg State University; Universitetskii pr. 26 198504 Saint Petersburg Russia
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18
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Hossain M, Thomas R, Mary YS, K.S.Resmi, Armaković S, Armaković SJ, Nanda AK, Vijayakumar G, Alsenoy CV. Understanding reactivity of two newly synthetized imidazole derivatives by spectroscopic characterization and computational study. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.01.029] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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19
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Sharma DK, Subbulakshmi KN, Narayana B, Sarojini BK, Anthal S, Kant R. Synthesis and Molecular Structure of 2-(4-Chlorophenyl)-3-(phenyl-amino)-5-(thiophen-2-ylmethylidene)-3,5-dihydro-4H-imidazol-4-one. CRYSTALLOGR REP+ 2018. [DOI: 10.1134/s1063774517070082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Pardeshi SD, Sathe PA, Vadagaonkar KS, Chaskar AC. One-Pot Protocol for the Synthesis of Imidazoles and Quinoxalines using N
-Bromosuccinimide. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700900] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Sachin D. Pardeshi
- National Centre for Nanosciences and Nanotechnology; University of Mumbai; Mumbai 400098 India
| | - Pratima A. Sathe
- National Centre for Nanosciences and Nanotechnology; University of Mumbai; Mumbai 400098 India
| | - Kamlesh S. Vadagaonkar
- Department of Dyestuff Technology; Institute of Chemical Technology; Mumbai 400019 India
| | - Atul C. Chaskar
- National Centre for Nanosciences and Nanotechnology; University of Mumbai; Mumbai 400098 India
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21
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Pardeshi SD, Vadagaonkar KS, Lade JJ, Melone L, Chaskar AC. An Efficient Synthesis of 1,2,4-Trisubstituted Imidazoles from Arylacetic Acids and N
-Arylbenzamidines via Simultaneous C-H and N-H Bond Activation. ChemistrySelect 2017. [DOI: 10.1002/slct.201700522] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Sachin D. Pardeshi
- National Centre for Nanosciences and Nanotechnology; University of Mumbai; Mumbai- 400 098 India
| | - Kamlesh S. Vadagaonkar
- Department of Dyestuff Technology; Institute of Chemical Technology; Mumbai- 400019 India
| | - Jatin J. Lade
- National Centre for Nanosciences and Nanotechnology; University of Mumbai; Mumbai- 400 098 India
| | - Lucio Melone
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica “G. Natta”; Politecnico Di Milano; via L. Mancinelli, 7 20131 Milano Italy
| | - Atul C. Chaskar
- National Centre for Nanosciences and Nanotechnology; University of Mumbai; Mumbai- 400 098 India
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22
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Andrews KG, Faizova R, Denton RM. A practical and catalyst-free trifluoroethylation reaction of amines using trifluoroacetic acid. Nat Commun 2017. [PMID: 28649981 PMCID: PMC5490195 DOI: 10.1038/ncomms15913] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Amines are a fundamentally important class of biologically active compounds and the ability to manipulate their physicochemical properties through the introduction of fluorine is of paramount importance in medicinal chemistry. Current synthesis methods for the construction of fluorinated amines rely on air and moisture sensitive reagents that require special handling or harsh reductants that limit functionality. Here we report practical, catalyst-free, reductive trifluoroethylation reactions of free amines exhibiting remarkable functional group tolerance. The reactions proceed in conventional glassware without rigorous exclusion of either moisture or oxygen, and use trifluoroacetic acid as a stable and inexpensive fluorine source. The new methods provide access to a wide range of medicinally relevant functionalized tertiary β-fluoroalkylamine cores, either through direct trifluoroethylation of secondary amines or via a three-component coupling of primary amines, aldehydes and trifluoroacetic acid. A reduction of in situ-generated silyl ester species is proposed to account for the reductive selectivity observed. Amino and trifluoromethyl groups are ubiquitous within medicinal chemistry, but synthesis of fluoroalkylamines normally requires harsh conditions or sensitive reagents. Here the authors report an operationally simple, catalyst-free procedure for the trifluoroethylation of primary and secondary amines.
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Affiliation(s)
- Keith G Andrews
- School of Chemistry, University Park, University of Nottingham, Nottingham NG7 2RD, UK
| | - Radmila Faizova
- School of Chemistry, University Park, University of Nottingham, Nottingham NG7 2RD, UK
| | - Ross M Denton
- School of Chemistry, University Park, University of Nottingham, Nottingham NG7 2RD, UK
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23
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Sayed AR, Al-Shihry SS. New Route Synthesis of Thiadiazoles, Bisthiadiazoles, Thiadiazolotriazines, and Pyrazolothiadiazoles Based on Hydrazonoyl Halides and Dihydrazinylthiadiazole. MOLECULES (BASEL, SWITZERLAND) 2017; 22:molecules22020336. [PMID: 28230816 PMCID: PMC6155855 DOI: 10.3390/molecules22020336] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Accepted: 02/15/2017] [Indexed: 11/18/2022]
Abstract
Synthesis and characterization of new thiadiazoles, bisthiadiazoles from the reaction of mono- and di-hydrazonoyl halides with various hydrazinecarbodithioate derivatives were studied. Treatment of hydrazonoyl halides with 2,5-dihydrazinyl-1,3,4-thiadiazole afforded new bistriazines containing thiadiazole; we also examined the reaction of 2,5-dihydrazinyl-1,3,4-thiadiazole with active methylene compounds to afford new pyrazoles containing thiadiazole compounds. The new synthesized compounds were identified by elemental analysis and various spectral data (Fourier transform infrared spectroscopy, mass spectrometry, 1H and 13C nuclear magnetic resonance).
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Affiliation(s)
- Abdelwahed R Sayed
- Department of Chemistry, Faculty of Science, King Faisal University, Hofuf 31982, Saudi Arabia.
- Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt.
| | - Shar Saad Al-Shihry
- Department of Chemistry, Faculty of Science, King Faisal University, Hofuf 31982, Saudi Arabia.
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24
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Poyraz M, Sarı M. Crystal structure of catena-poly[[bis-(acetato-κ O)copper(II)]-bis-[μ-4-(1 H-imidazol-1-yl)phenol]-κ 2N3: O;κ 2O: N3]. Acta Crystallogr E Crystallogr Commun 2017; 73:209-212. [PMID: 28217344 PMCID: PMC5290567 DOI: 10.1107/s2056989017000780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 01/16/2017] [Indexed: 11/10/2022]
Abstract
In the title compound, [Cu(CH3COO)2(C9H8N2O)2] n , the CuII ion resides on a centre of inversion, displaying a tetra-gonally distorted octa-hedral coordination environment defined by two pairs of N and O atoms of symmetry-related 4-(1H-imidazol-1-yl)phenol ligands and the O atoms of two symmetry-related acetate ligands. The bridging mode of the 4-(1H-imidazol-1-yl)phenol ligands is associated with a very long Cu⋯O inter-actions involving the phenol O atom of the heterocyclic ligand, which creates chains extending parallel to [100]. In the crystal, the chains are arranged in a distorted hexa-gonal rod packing and are linked via C-H⋯O hydrogen bonds and by π-π stacking inter-actions involving centrosymmetrically related pairs of imidazole and phenol rings.
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Affiliation(s)
- Mehmet Poyraz
- Department of Chemistry, Faculty of Science and Arts, Afyon Kocatepe University, TR-03200 Afyonkarahisar, Turkey
| | - Musa Sarı
- Department of Physics Education, Gazi University, Beşevler, TR-06500 Ankara, Turkey
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25
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Rajaraman D, Sundararajan G, Loganath N, Krishnasamy K. Synthesis, molecular structure, DFT studies and antimicrobial activities of some novel 3-(1-(3,4-dimethoxyphenethyl)-4,5-diphenyl-1H-imidazol-2-yl)-1H-indole derivatives and its molecular docking studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.08.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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26
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Das UK, Shimon LJW, Milstein D. Imidazole synthesis by transition metal free, base-mediated deaminative coupling of benzylamines and nitriles. Chem Commun (Camb) 2017; 53:13133-13136. [DOI: 10.1039/c7cc08322j] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
An unprecedented transition metal free, base-mediated deaminative coupling of benzylamines and nitriles is reported. This protocol provides a practical strategy for the synthesis of 2,4,5-tri-substituted imidazoles with liberation of NH3.
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Affiliation(s)
- Uttam Kumar Das
- Department of Organic Chemistry, Weizmann Institute of Science
- Rehovot 76100
- Israel
| | - Linda J. W. Shimon
- Department of Chemical Research Support, Weizmann Institute of Science
- Rehovot 76100
- Israel
| | - David Milstein
- Department of Organic Chemistry, Weizmann Institute of Science
- Rehovot 76100
- Israel
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27
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Rajanarendar E, Thirupathaiah K, Ramakrishna S, Nagaraju D. A Convenient and Facile Hantzsch Synthesis of Aryl Imidazo[1,2- b]Isoxazolyl- N-aryl Thiazol Amines. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2518] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- E. Rajanarendar
- Department of Chemistry; Kakatiya University; Warangal Telangana State 506009 India
| | - K. Thirupathaiah
- Department of Chemistry; Kakatiya University; Warangal Telangana State 506009 India
| | - S. Ramakrishna
- Department of Chemistry; Kakatiya University; Warangal Telangana State 506009 India
| | - D. Nagaraju
- Department of Chemistry; Kakatiya University; Warangal Telangana State 506009 India
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28
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Sarkar D, Pramanik AK, Mondal TK. Benzimidazole based ratiometric and colourimetric chemosensor for Ni(II). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 153:397-401. [PMID: 26348129 DOI: 10.1016/j.saa.2015.08.052] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 08/13/2015] [Accepted: 08/30/2015] [Indexed: 06/05/2023]
Abstract
A highly sensitive and selective benzimidazole based colourimetric chemosensor (HL) for the efficient detection of Ni(2+) has been reported. The synthesized chemosensor HL is highly efficient in detecting Ni(2+) over other metal ions that commonly coexist with Ni(2+) in physiological and environmental samples. HL also shows distinct color change from orange yellow to blue visible under the naked eye due to specific binding with Ni(2+). This color change corresponds to a large red shift of the UV-Vis spectrum from 403 nm to 600 nm with a distinct isosbestic point at around 500 nm. The cation sensing property of the receptor HL has been examined by UV-Vis spectroscopy. Electronic structure of the HL-Ni(2+) complex and sensing mechanism has been interpreted by DFT and TDDFT calculations.
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Affiliation(s)
- Deblina Sarkar
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
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29
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Al-Lahham R, Deford JH, Papaconstantinou J. Mitochondrial-generated ROS down regulates insulin signaling via activation of the p38MAPK stress response pathway. Mol Cell Endocrinol 2016; 419:1-11. [PMID: 26454089 DOI: 10.1016/j.mce.2015.09.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 08/18/2015] [Accepted: 09/14/2015] [Indexed: 01/09/2023]
Abstract
Impairment of insulin signaling and hepatic insulin resistance has been attributed to ROS-mediated activation of p38MAPK stress response signaling. Our research focused on whether (a) ROS generated by mitochondrial electron transport chain complex I (ETC-CI) dysfunction, via the use of Rotenone, inactivates insulin signaling; and (b) the p38MAPK pathway is involved in the ROS-induced impairment of insulin signaling. Our results show that in primary mouse hepatocytes the CI inhibitor, Rotenone, (a) induces IRS-1 Ser(307) phosphorylation that is blocked by the anti-oxidant NAC or by the p38MAPK inhibitors, SB203580 and SB202190; (b) inhibits insulin-stimulated AKT-Ser(473) and GSK3β-Ser(9) phosphorylations, in a manner that is not responsive to reversal by the anti-oxidant NAC or by the p38MAPK inhibitors, SB203580 and SB202190. We conclude that rotenone-induced insulin resistance involves a p38MAPK-dependent mechanism for the inhibition of the proximal end of insulin signaling (IRS1), and a p38MAPK-independent mechanism for the inhibition of the distal end (AKT and GSK3β). Our study suggests that ROS generated by inhibition of ETC CI, promotes hepatic insulin resistance partly via activation of the p38MAPK stress-response pathway.
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Affiliation(s)
- Rabab Al-Lahham
- Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - James H Deford
- Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - John Papaconstantinou
- Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, TX, 77555, USA.
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30
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Cao J, Zhou X, Ma H, Shi C, Huang G. A facile and efficient method for the synthesis of 1,2,4-trisubstituted imidazoles with enamides and benzylamines. RSC Adv 2016. [DOI: 10.1039/c6ra08174f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
A novel and practical method for the construction of 1,2,4-trisubstituted imidazoles with enamides and benzylamines catalysed by CuBr and I2 has been developed.
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Affiliation(s)
- Jinhui Cao
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou
| | - Xiaoqiang Zhou
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou
| | - Haojie Ma
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou
| | - Chong Shi
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou
| | - Guosheng Huang
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou
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31
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Zhu Y, Li C, Zhang J, She M, Sun W, Wan K, Wang Y, Yin B, Liu P, Li J. A Facile FeCl3/I2-Catalyzed Aerobic Oxidative Coupling Reaction: Synthesis of Tetrasubstituted Imidazoles from Amidines and Chalcones. Org Lett 2015. [DOI: 10.1021/acs.orglett.5b01854] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Yuelu Zhu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education and College of Chemistry & Materials Science, Northwest University, Xi’an Shaanxi 710127, P. R. China
| | - Cheng Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education and College of Chemistry & Materials Science, Northwest University, Xi’an Shaanxi 710127, P. R. China
| | - Jidong Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education and College of Chemistry & Materials Science, Northwest University, Xi’an Shaanxi 710127, P. R. China
| | - Mengyao She
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education and College of Chemistry & Materials Science, Northwest University, Xi’an Shaanxi 710127, P. R. China
| | - Wei Sun
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education and College of Chemistry & Materials Science, Northwest University, Xi’an Shaanxi 710127, P. R. China
| | - Kerou Wan
- Xi’an Catalyst Chemical Co., Ltd., Xi’an
Shaanxi 710016, P. R. China
| | - Yaqi Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education and College of Chemistry & Materials Science, Northwest University, Xi’an Shaanxi 710127, P. R. China
| | - Bin Yin
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education and College of Chemistry & Materials Science, Northwest University, Xi’an Shaanxi 710127, P. R. China
| | - Ping Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education and College of Chemistry & Materials Science, Northwest University, Xi’an Shaanxi 710127, P. R. China
| | - Jianli Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education and College of Chemistry & Materials Science, Northwest University, Xi’an Shaanxi 710127, P. R. China
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32
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Copper and zinc co-catalyzed synthesis of imidazoles via the activation of sp3 C–H and N–H bonds. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.04.054] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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33
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Höfener M, Pachl F, Take T, Fischer von Mollard G, Kuster B, Sewald N. Investigating RET RTK Signaling Pathways Using an IAP-Based Activity-Profiling Approach. J Proteome Res 2014; 13:3628-34. [DOI: 10.1021/pr500163r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Michael Höfener
- Organic
and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - Fiona Pachl
- Chair
for Proteomics and Bioanalytics, Center of Life and Food Sciences
Weihenstephan, Technische Universität München, 85354 Freising, Germany
| | - Tim Take
- Biochemistry,
Department of Chemistry, Bielefeld University, 33615 Bielefeld, Germany
| | | | - Bernhard Kuster
- Chair
for Proteomics and Bioanalytics, Center of Life and Food Sciences
Weihenstephan, Technische Universität München, 85354 Freising, Germany
- Center for Integrated Protein Science Munich, 85354 Freising, Germany
| | - Norbert Sewald
- Organic
and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany
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34
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Wu H, Kong J, Zhang Y, Shi F, Bai Y, Wang X. A Six-Coordinate Picrate Nickel(II) Complex Based on the V-Shaped Ligand 1,3-Bis (1-Benzylbenzimidazol-2-yl)-2-Thiapropane: Synthesis, Crystal Structure, Biological Activities. PHOSPHORUS SULFUR 2014. [DOI: 10.1080/10426507.2013.829836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Huilu Wu
- a School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Jin Kong
- a School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Yanhui Zhang
- a School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Furong Shi
- a School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Yuchen Bai
- a School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
| | - Xiaoli Wang
- a School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou , Gansu , 730070 , P. R. China
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35
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Patel M, Saunthawal RK, Verma AK. Base-catalyzed stereoselective intermolecular addition of imidazoles onto alkynes: an easy access to imidazolyl enamines. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.100] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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36
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Sarkar D, Pramanik AK, Mondal TK. Synthesis, crystal structure and spectral properties of 2-[(1-Methyl-2-benzimidazolyl)azo]-p-cresol: an experimental and theoretical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 115:421-425. [PMID: 23867644 DOI: 10.1016/j.saa.2013.06.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 06/06/2013] [Accepted: 06/12/2013] [Indexed: 06/02/2023]
Abstract
2-[(1-Methyl-2-benzimidazolyl)azo]-p-cresol (HL), containing phenolic-OH function and benzimidazole moiety has been synthesized and characterized. The chemical, electronic structure and photophysical properties have been studied by spectroscopic analysis abetted with DFT and TDDFT calculations. The change in electronic spectra of HL by titration with aq. NaOH is studied and well supported by TDDFT calculations. The structure is confirmed by single crystal X-ray study. In the unit cell, two HL molecules are H-bonded with H2O molecule and forms dimmeric structure. The molecule forms 2D-supramolecular structure by inter-molecular H-bonding and π-π interactions.
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Affiliation(s)
- Deblina Sarkar
- Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata 700 032, India
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37
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Frelin C, Herrington R, Janmohamed S, Barbara M, Tran G, Paige CJ, Benveniste P, Zuñiga-Pflücker JC, Souabni A, Busslinger M, Iscove NN. GATA-3 regulates the self-renewal of long-term hematopoietic stem cells. Nat Immunol 2013; 14:1037-44. [PMID: 23974957 PMCID: PMC4972578 DOI: 10.1038/ni.2692] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 07/22/2013] [Indexed: 01/07/2023]
Abstract
The transcription factor GATA-3 is expressed and required for differentiation and function throughout the T lymphocyte lineage. Despite evidence it may also be expressed in multipotent hematopoietic stem cells (HSCs), any role for GATA-3 in these cells has remained unclear. Here we found GATA-3 was in the cytoplasm in quiescent long-term stem cells from steady-state bone marrow but relocated to the nucleus when HSCs cycled. Relocation depended on signaling via the mitogen-activated protein kinase p38 and was associated with a diminished capacity for long-term reconstitution after transfer into irradiated mice. Deletion of Gata3 enhanced the repopulating capacity and augmented the self-renewal of long-term HSCs in cell-autonomous fashion without affecting the cell cycle. Our observations position GATA-3 as a regulator of the balance between self-renewal and differentiation in HSCs that acts downstream of the p38 signaling pathway.
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Affiliation(s)
- Catherine Frelin
- 1] Ontario Cancer Institute, University Health Network, Toronto, Canada. [2] Department of Medical Biophysics, University of Toronto, Toronto, Canada
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38
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Mohamed SK, Akkurt M, Fronczek FR, Marzouk AAE, Abdelhamid AA. 2-(3,4-Dimeth-oxy-phen-yl)-4,5-diphenyl-1-(prop-2-en-1-yl)-1H-imidazole. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o2979-80. [PMID: 23125757 PMCID: PMC3470344 DOI: 10.1107/s1600536812039566] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 09/17/2012] [Indexed: 11/22/2022]
Abstract
In the title compound, C26H24N2O2, the planar 1H-imidazole ring makes dihedral angles of 35.78 (4), 26.35 (5) and 69.75 (5)°, respectively, with the dimethoxyphenyl ring and the phenyl rings in the 4- and 5-positions. In the crystal, C—H⋯O hydrogen bonds connect neighbouring molecules, forming infinite chains running along the b axis. Furthermore, the crystal structure exhibits a C—H-⋯π interaction between a methyl H atom and a phenyl ring from an adjacent molecule.
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Affiliation(s)
- Shaaban K Mohamed
- Chemistry and Environmental Division, Manchester Metropolitan University, Manchester M1 5GD, England
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39
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Basant N, Durante C, Cocchi M, Menziani MC. Modeling the Binding Affinity of p38α MAP Kinase Inhibitors by Partial Least Squares Regression. Chem Biol Drug Des 2012; 80:455-70. [DOI: 10.1111/j.1747-0285.2012.01419.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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40
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Vinh NB, Simpson JS, Scammells PJ, Chalmers DK. Virtual screening using a conformationally flexible target protein: models for ligand binding to p38α MAPK. J Comput Aided Mol Des 2012; 26:409-23. [PMID: 22527960 DOI: 10.1007/s10822-012-9569-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 03/26/2012] [Indexed: 12/25/2022]
Abstract
We have used virtual screening to develop models for the binding of aryl substituted heterocycles to p38α MAPK. Virtual screening was conducted on a number of p38α MAPK crystal structures using a library of 46 known p38α MAPK inhibitors containing a heterocyclic core substituted by pyridine and fluorophenyl rings (structurally related to SB203580) and a set of decoy compounds. Multiple protonation states and tautomers of active and decoy compounds were considered. Each docking model was evaluated using receiver operating characteristic (ROC) curves and enrichment factors. The two best performing single crystal structures were found to be 1BL7 and 2EWA, with enrichment factors of 14.1 and 13.0 at 2% of the virtual screen respectively. Ensembles of up to four receptors of similar conformations were generated, generally giving good or very good performances with high ROC AUCs and good enrichment. The 1BL7-2EWA ensemble was able to outperform each of its constituent receptors and gave high enrichment factors of 17.3, 12.0, 8.0 at 2, 5 and 10% respectively, of the virtual screen. A ROC AUC of 0.94 was obtained for this ensemble. This method may be applied to other proteins where there are a large number of inhibitor classes with different binding site conformations.
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Affiliation(s)
- Natalie B Vinh
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC, 3052, Australia
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Wu H, Kou F, Jia F, Liu B, Yuan J, Bai Y. Synthesis, Characterization, DNA-binding Properties, and Antioxidant Activity of a Copper(II) Complex with 1, 3-Bis(1-allaylbenzimidazol-2-yl)-2-oxopropane. Z Anorg Allg Chem 2011. [DOI: 10.1002/zaac.201100354] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Synthesis and characterization of the ligand based on benzimidazole and its copper complex: DNA binding and antioxidant activity. Bioinorg Chem Appl 2011; 2011:105431. [PMID: 22162669 PMCID: PMC3226424 DOI: 10.1155/2011/105431] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Accepted: 08/28/2011] [Indexed: 12/04/2022] Open
Abstract
A new copper(II) complex with formulae of [Cu(buobb)2](pic)2, where buobb stands for the ligand of 1,3-bis(1- butylbenzimidazol-2-yl)-2-oxopropane and pic represents 2,4,6-trinitrophenol, has been synthesized and characterized by elemental analyses, molar conductivity, IR, UV-Vis spectra measurements, and cyclic voltammetry. The crystal structure of the copper(II) complex has been determined by X-ray single-crystal diffraction. The coordination environment around each copper(II) atom can be described as a distorted octahedral geometry. The π-π stacking interactions link the copper(II) complex into a 1D infinite network. The interactions of the ligand and the copper(II) complex with calf thymus DNA (CT-DNA) are investigated by using electronic absorption titration, ethidium bromide-DNA displacement experiments, and viscosity measurements. Additionally, the copper(II) complex's antioxidant properties have been investigated in vitro.
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Bamborough P, Brown MJ, Christopher JA, Chung CW, Mellor GW. Selectivity of kinase inhibitor fragments. J Med Chem 2011; 54:5131-43. [PMID: 21699136 DOI: 10.1021/jm200349b] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A kinase-focused screening set of fragments has been assembled and has proved successful for the discovery of ligand-efficient hits against many targets. Here we present some of our general conclusions from this exercise. Notably, we present the first profiling results for literature fragments that have previously been used as starting points for optimization against individual kinases. We consider the importance of screening format and the extent to which selectivity is helpful in selecting fragments for progression. Results are also outlined for fragments targeting the DFG-out conformation and for atypical kinases such as PIM1 and lipid kinases.
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Affiliation(s)
- Paul Bamborough
- GlaxoSmithKline R&D, Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK.
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Zhang YY, Zhou CH. Synthesis and activities of naphthalimide azoles as a new type of antibacterial and antifungal agents. Bioorg Med Chem Lett 2011; 21:4349-52. [PMID: 21669530 DOI: 10.1016/j.bmcl.2011.05.042] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Revised: 04/23/2011] [Accepted: 05/13/2011] [Indexed: 11/26/2022]
Abstract
Naphthalimide-derived azoles as a new type of antimicrobial agents were synthesized and evaluated for their efficiency in vitro against eight bacteria and two fungi by two fold serial dilution technique. Most title compounds exhibited good antimicrobial potency with low MIC values ranging from 1 to 16μg/mL. Notably, some synthesized compounds displayed comparable or even better antibacterial and antifungal activities against some tested strains than the reference drugs Orbifloxacin, Chloromycin and Fluconazole, respectively.
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Affiliation(s)
- Yi-Yi Zhang
- Laboratory of Bioorganic & Medicinal Chemistry, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
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Mechanistically probing lipid-siRNA nanoparticle-associated toxicities identifies Jak inhibitors effective in mitigating multifaceted toxic responses. Mol Ther 2010; 19:567-75. [PMID: 21179008 DOI: 10.1038/mt.2010.282] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A major hurdle for harnessing small interfering RNA (siRNA) for therapeutic application is an effective and safe delivery of siRNA to target tissues and cells via systemic administration. While lipid nanoparticles (LNPs) composed of a cationic lipid, poly-(ethylene glycol) lipid and cholesterol, are effective in delivering siRNA to hepatocytes via systemic administration, they may induce multi-faceted toxicities in a dose-dependent manner, independently of target silencing. To understand the underlying mechanism of toxicities, pharmacological probes including anti-inflammation drugs and specific inhibitors blocking different pathways of innate immunity were evaluated for their abilities to mitigate LNP-siRNA-induced toxicities in rodents. Three categories of rescue effects were observed: (i) pretreatment with a Janus kinase (Jak) inhibitor or dexamethasone abrogated LNP-siRNA-mediated lethality and toxicities including cytokine induction, organ impairments, thrombocytopenia and coagulopathy without affecting siRNA-mediated gene silencing; (ii) inhibitors of PI3K, mammalian target of rapamycin (mTOR), p38 and IκB kinase (IKK)1/2 exhibited a partial alleviative effect; (iii) FK506 and etoricoxib displayed no protection. Furthermore, knockout of Jak3, tumor necrosis factor receptors (Tnfr)p55/p75, interleukin 6 (IL-6) or interferon (IFN)-γ alone was insufficient to alleviate LNP-siRNA-associated toxicities in mice. These indicate that activation of innate immune response is a primary trigger of systemic toxicities and that multiple innate immune pathways and cytokines can mediate toxic responses. Jak inhibitors are effective in mitigating LNP-siRNA-induced toxicities.
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Kategaonkar AH, Sapkal SB, Madje BR, Shingate BB, Shingare MS. Synthesis of new 4-(4,5-diphenyl-1h-imidazol- 2-yl)tetrazolo[1,5-a]quinolines from tetrazolo[1,5-a]quinolines. Chem Heterocycl Compd (N Y) 2010. [DOI: 10.1007/s10593-010-0579-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bracht C, Hauser DRJ, Schattel V, Albrecht W, Laufer SA. Synthesis and Biological Testing of N-Aminoimidazole-Based p38α MAP Kinase Inhibitors. ChemMedChem 2010; 5:1134-42. [PMID: 20473979 DOI: 10.1002/cmdc.201000114] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Claudia Bracht
- Institute of Pharmacy, Department of Pharmaceutical and Medicinal Chemistry, Eberhard-Karls-Universität Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
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Marantos C, Mukaro V, Ferrante J, Hii C, Ferrante A. Inhibition of the lipopolysaccharide-induced stimulation of the members of the MAPK family in human monocytes/macrophages by 4-hydroxynonenal, a product of oxidized omega-6 fatty acids. THE AMERICAN JOURNAL OF PATHOLOGY 2008; 173:1057-66. [PMID: 18772336 DOI: 10.2353/ajpath.2008.071150] [Citation(s) in RCA: 212] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The compound 4-hydroxynonenal (4-HNE) is the major aldehyde formed during lipid peroxidation of omega-6-polyunsaturated fatty acids and has been suggested to regulate inflammatory responses because it inhibits tumor necrosis factor (TNF) mRNA production in the human monocytic cell line THP-1. Here we demonstrate that 4-HNE inhibits TNF and interleukin-1beta production in human monocytes in response to lipopolysaccharide. The main action of 4-HNE occurred at the pretranscriptional level; there was no effect on TNF mRNA production or stability when 4-HNE was added after stimulation. The mechanism of action of 4-HNE appears to be downstream of lipopolysaccharide-receptor binding. In the human monocytic MonoMac 6 cell line, 4-HNE caused selective inhibition of the activity of the mitogen-activated protein kinases p38 and ERK1/ERK2, but not JNK. However, in monocytes, the activities of all three kinases were inhibited, suggesting that the effects of 4-HNE were exerted at points upstream of ERK1/ERK2 and JNK as the levels of the phosphorylated kinases were reduced. In contrast, p38 phosphorylation was not inhibited, suggesting that 4-HNE affects kinase activity. 4-HNE also inhibited nuclear factor-kappaB activation in monocytes. In view of the roles of p38, ERK1/ERK2, JNK, and nuclear factor-kappaB in inflammation, the data suggest that 4-HNE, at nontoxic concentrations, has anti-inflammatory properties, most likely through an effect on these signaling molecules, and could lead to the development of novel treatments for inflammatory diseases.
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Affiliation(s)
- Christos Marantos
- The Sansom Institute and School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
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Abstract
Pharmaceutical companies are facing an increasing interest in new target identification and validation. In particular, extensive efforts are being made in the field of protein kinase inhibitors research and development, and the past ten years of effort in this field have altered our perception of the potential of kinases as drug targets. Therefore, in the drug discovery process, the selection of relevant, susceptible protein kinase targets combined with searches for leads and candidates have become a crucial approach. The success of recent launches of protein kinase inhibitors (Gleevec, Imatinib, Sutent, Iressa, Nexavar, Sprycel) gave another push to this field. Numerous other kinase inhibitors are currently undergoing clinical trials or clinical development. Some questions are nevertheless unanswered, mostly related to the great number of known kinases in the human genome, to their similarity with each other, to the existence of functionally redundant kinases for specific pathways, and also because the connection between particular pathways and diseases is not always clear. The review is leading the reader through a panoramic view of protein kinase inhibition with a major focus on MAPK, successful examples and clinical candidates.
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Affiliation(s)
- Simona Margutti
- Institute of Pharmacy, Department of Pharmaceutical and Medicinal Chemistry; Eberhard Karls University of Tuebingen, Auf der Morgenstelle 8, 72076 Tuebingen, Germany
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