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Magné V, Sanogo Y, Demmer CS, Retailleau P, Marinetti A, Guinchard X, Voituriez A. Chiral Phosphathiahelicenes: Improved Synthetic Approach and Uses in Enantioselective Gold(I)-Catalyzed [2 + 2] Cycloadditions of N-Homoallenyl Tryptamines. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01819] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Valentin Magné
- Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Youssouf Sanogo
- Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Charles S. Demmer
- Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Angela Marinetti
- Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Xavier Guinchard
- Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, UPR 2301, 91198 Gif-sur-Yvette, France
| | - Arnaud Voituriez
- Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, UPR 2301, 91198 Gif-sur-Yvette, France
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2
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Febvay J, Demmer CS, Retailleau P, Crassous J, Abella L, Autschbach J, Voituriez A, Marinetti A. Phosphahelicenes with (Thio)Phosphinic Acid and Ester Functions by the Oxidative Photocyclisation Approach. Chemistry 2019; 25:15609-15614. [PMID: 31584219 DOI: 10.1002/chem.201903750] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 09/25/2019] [Indexed: 11/08/2022]
Abstract
Phosphahelicenes with thiophosphinic acid and ester functions have been obtained by the oxidative photocyclisation of olefins bearing both a benzophenanthrene and a benzophosphole unit. When the method has been extended to olefins bearing a partially saturated benzophospholene unit, a divergent regioselectivity of the photocyclisation step has been observed, leading to new helicenes in which the phosphorus function is located on the external rim of the helical backbone. The observed regioselectivity correlates well with the free-valence numbers of the atoms involved in the photocyclisation reaction (DFT calculations).
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Affiliation(s)
- Julie Febvay
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198, Gif-sur-Yvette, France
| | - Charles S Demmer
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198, Gif-sur-Yvette, France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198, Gif-sur-Yvette, France
| | - Jeanne Crassous
- Institut des Sciences Chimiques de Rennes UMR CNRS 6226, Univ Rennes, Campus de Beaulieu, 35042, Rennes Cedex, France
| | - Laura Abella
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY, 14260-3000, USA
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY, 14260-3000, USA
| | - Arnaud Voituriez
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198, Gif-sur-Yvette, France
| | - Angela Marinetti
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, 91198, Gif-sur-Yvette, France
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3
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Bisballe N, Hedidi M, Demmer CS, Chevallier F, Roisnel T, Dorcet V, Halauko YS, Ivashkevich OA, Matulis VE, Bentabed-Ababsa G, Bunch L, Mongin F. Functionalization of Oxazolo[4,5- b
]pyrazines by Deprotometallation. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800481] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Niels Bisballe
- Univ Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; 35000 Rennes France
- Department of Drug Design and Pharmacology; Faculty of Health and Medical Sciences; University of Copenhagen; Universitetsparken 2 2100 Copenhagen Denmark
| | - Madani Hedidi
- Univ Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; 35000 Rennes France
- Laboratoire de Synthèse Organique Appliquée; Faculté des Sciences Exactes et Appliquées; Université d'Oran; 1 Ahmed Ben Bella 31000 Oran Algeria
| | - Charles S. Demmer
- Department of Drug Design and Pharmacology; Faculty of Health and Medical Sciences; University of Copenhagen; Universitetsparken 2 2100 Copenhagen Denmark
| | - Floris Chevallier
- Univ Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; 35000 Rennes France
| | - Thierry Roisnel
- Univ Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; 35000 Rennes France
| | - Vincent Dorcet
- Univ Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; 35000 Rennes France
| | - Yury S. Halauko
- UNESCO Chair of Belarusian State University; 14 Leningradskaya Str. 220030 Minsk Belarus
| | - Oleg A. Ivashkevich
- UNESCO Chair of Belarusian State University; 14 Leningradskaya Str. 220030 Minsk Belarus
| | - Vadim E. Matulis
- Research Institute for Physico-Chemical Problems of Belarusian State University; 14 Leningradskaya Str. 220030 Minsk Belarus
| | - Ghenia Bentabed-Ababsa
- Laboratoire de Synthèse Organique Appliquée; Faculté des Sciences Exactes et Appliquées; Université d'Oran; 1 Ahmed Ben Bella 31000 Oran Algeria
| | - Lennart Bunch
- Department of Drug Design and Pharmacology; Faculty of Health and Medical Sciences; University of Copenhagen; Universitetsparken 2 2100 Copenhagen Denmark
| | - Florence Mongin
- Univ Rennes, CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; 35000 Rennes France
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4
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Demmer CS, Rombach D, Liu N, Nielsen B, Pickering DS, Bunch L. Revisiting the Quinoxalinedione Scaffold in the Construction of New Ligands for the Ionotropic Glutamate Receptors. ACS Chem Neurosci 2017; 8:2477-2495. [PMID: 28872835 DOI: 10.1021/acschemneuro.7b00243] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
More than two decades ago, the quinoxalinedione scaffold was shown to act as an α-amino acid bioisoster. Following extensive structure-activity relationship (SAR) studies, the antagonists DNQX, CNQX, and NBQX in the ionotropic glutamate receptor field were identified. In this work, we revisit the quinoxalinedione scaffold and explore the incorporation of an acid functionality in the 6-position. The SAR studies disclose that by this strategy it was possible to tune in iGluR selectivity among the AMPA, NMDA, and KA receptors, and to some extent also obtain full receptor subtype selectivity. Highlights of the study of 44 new analogues are compound 2m being a high affinity ligand for native AMPA receptors (IC50= 0.48 μM), analogues 2e,f,h,k,v all displayed selectivity for native NMDA receptors, and compounds 2s,t,u are selective ligand for the GluK1 receptor. Most interestingly, compound 2w was shown to be a GluK3-preferring ligand with full selectivity over native AMPA, KA and NMDA receptors.
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Affiliation(s)
- Charles S. Demmer
- Department of Drug Design and Pharmacology,
Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen OE, Denmark
| | - David Rombach
- Department of Drug Design and Pharmacology,
Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen OE, Denmark
| | - Na Liu
- Department of Drug Design and Pharmacology,
Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen OE, Denmark
| | - Birgitte Nielsen
- Department of Drug Design and Pharmacology,
Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen OE, Denmark
| | - Darryl S. Pickering
- Department of Drug Design and Pharmacology,
Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen OE, Denmark
| | - Lennart Bunch
- Department of Drug Design and Pharmacology,
Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen OE, Denmark
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5
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Demmer CS, Aillard P, Febvay J, Retailleau P, Voituriez A, Marinetti A. Photochemical [2+2] Cyclization of Helical Phosphinamides in Solution and in the Solid State. CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201700148] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Charles S. Demmer
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Université Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Paul Aillard
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Université Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Julie Febvay
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Université Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Université Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Arnaud Voituriez
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Université Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Angela Marinetti
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Université Paris-Sud; Université Paris-Saclay; 1, av. de la Terrasse 91198 Gif-sur-Yvette France
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7
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Evano G, Blanchard N, Compain G, Coste A, Demmer CS, Gati W, Guissart C, Heimburger J, Henry N, Jouvin K, Karthikeyan G, Laouiti A, Lecomte M, Martin-Mingot A, Métayer B, Michelet B, Nitelet A, Theunissen C, Thibaudeau S, Wang J, Zarca M, Zhang C. A Journey in the Chemistry of Ynamides: From Synthesis to Applications. CHEM LETT 2016. [DOI: 10.1246/cl.160260] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Gwilherm Evano
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB)
| | | | | | - Alexis Coste
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines
| | - Charles S. Demmer
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB)
| | - Wafa Gati
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines
| | - Céline Guissart
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB)
| | - Jérémy Heimburger
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines
| | - Nicolas Henry
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB)
| | - Kévin Jouvin
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines
| | - Ganesan Karthikeyan
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines
| | - Anouar Laouiti
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines
| | - Morgan Lecomte
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB)
| | | | - Benoît Métayer
- Superacid Group in “Organic Synthesis” Team, Université de Poitiers
| | - Bastien Michelet
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB)
| | - Antoine Nitelet
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB)
| | - Cédric Theunissen
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB)
| | | | - Jianjun Wang
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB)
| | - Maxence Zarca
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB)
| | - Chunyang Zhang
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB)
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8
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Affiliation(s)
- Charles S. Demmer
- Laboratoire
de Chimie Organique,
Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Emeline Benoit
- Laboratoire
de Chimie Organique,
Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Gwilherm Evano
- Laboratoire
de Chimie Organique,
Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
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Krogsgaard-Larsen N, Storgaard M, Møller C, Demmer CS, Hansen J, Han L, Monrad RN, Nielsen B, Tapken D, Pickering DS, Kastrup JS, Frydenvang K, Bunch L. Structure–Activity Relationship Study of Ionotropic Glutamate Receptor Antagonist (2S,3R)-3-(3-Carboxyphenyl)pyrrolidine-2-carboxylic Acid. J Med Chem 2015. [DOI: 10.1021/acs.jmedchem.5b00750] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Niels Krogsgaard-Larsen
- Chemical Neuroscience Group, ‡Biostructural Research
Group, §Medicinal
Chemistry Group, ∥Molecular, Cellular Pharmacology Group, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark
| | - Morten Storgaard
- Chemical Neuroscience Group, ‡Biostructural Research
Group, §Medicinal
Chemistry Group, ∥Molecular, Cellular Pharmacology Group, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark
| | - Charlotte Møller
- Chemical Neuroscience Group, ‡Biostructural Research
Group, §Medicinal
Chemistry Group, ∥Molecular, Cellular Pharmacology Group, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark
| | - Charles S. Demmer
- Chemical Neuroscience Group, ‡Biostructural Research
Group, §Medicinal
Chemistry Group, ∥Molecular, Cellular Pharmacology Group, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark
| | - Jeanette Hansen
- Chemical Neuroscience Group, ‡Biostructural Research
Group, §Medicinal
Chemistry Group, ∥Molecular, Cellular Pharmacology Group, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark
| | - Liwei Han
- Chemical Neuroscience Group, ‡Biostructural Research
Group, §Medicinal
Chemistry Group, ∥Molecular, Cellular Pharmacology Group, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark
| | - Rune N. Monrad
- Chemical Neuroscience Group, ‡Biostructural Research
Group, §Medicinal
Chemistry Group, ∥Molecular, Cellular Pharmacology Group, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark
| | - Birgitte Nielsen
- Chemical Neuroscience Group, ‡Biostructural Research
Group, §Medicinal
Chemistry Group, ∥Molecular, Cellular Pharmacology Group, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark
| | - Daniel Tapken
- Chemical Neuroscience Group, ‡Biostructural Research
Group, §Medicinal
Chemistry Group, ∥Molecular, Cellular Pharmacology Group, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark
| | - Darryl S. Pickering
- Chemical Neuroscience Group, ‡Biostructural Research
Group, §Medicinal
Chemistry Group, ∥Molecular, Cellular Pharmacology Group, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark
| | - Jette S. Kastrup
- Chemical Neuroscience Group, ‡Biostructural Research
Group, §Medicinal
Chemistry Group, ∥Molecular, Cellular Pharmacology Group, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark
| | - Karla Frydenvang
- Chemical Neuroscience Group, ‡Biostructural Research
Group, §Medicinal
Chemistry Group, ∥Molecular, Cellular Pharmacology Group, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark
| | - Lennart Bunch
- Chemical Neuroscience Group, ‡Biostructural Research
Group, §Medicinal
Chemistry Group, ∥Molecular, Cellular Pharmacology Group, Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Denmark
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Demmer CS, Møller C, Brown PMGE, Han L, Pickering DS, Nielsen B, Bowie D, Frydenvang K, Kastrup JS, Bunch L. Binding mode of an α-amino acid-linked quinoxaline-2,3-dione analogue at glutamate receptor subtype GluK1. ACS Chem Neurosci 2015; 6:845-54. [PMID: 25856736 DOI: 10.1021/acschemneuro.5b00038] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Two α-amino acid-functionalized quinoxalines, 1a (CNG-10301) and 1b (CNG-10300), of a quinoxaline moiety coupled to an amino acid moiety were designed, synthesized, and characterized pharmacologically. While 1a displayed low affinity at native AMPA, KA, and NMDA receptors, and at homomeric GluK1,3 receptors, the affinity for GluK2 was in the midmicromolar range (Ki = 136 μM), 1b displayed low to midmicromolar range binding affinity at all the iGluRs (Ki = 9-126 μM). In functional experiments (outside-out patches excised from transfected HEK293T cells), 100 μM 1a partially blocked GluK1 (33% peak response), while GluK2 was unaffected (96% peak response). Furthermore, 1a was shown not to be an agonist at GluK1 and GluK2 at 100 μM. On the other hand, 100 μM 1b fully antagonized GluK1 (8% peak response) but only partially blocked GluK2 (33% peak response). An X-ray structure at 2.3 Å resolution of 1b in the GluK1-LBD (ligand-binding domain) disclosed an unexpected binding mode compared to the predictions made during the design phase; the quinoxaline moiety remains to act as an amino acid bioisostere, but the amino acid moiety is oriented into a new area within the GluK1 receptor. The structure of the GluK1-LBD with 1b showed a large variation in domain openings of the three molecules from 25° to 49°, demonstrating that the GluK1-LBD is capable of undergoing major domain movements.
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Abstract
The benzoxazole heterocycle is often found in ligands targeting a plethora of receptors and enzymes. By analysis of published X-ray structures, this review aims at highlighting key interactions which the benzoxazole may engage in with its host protein. Furthermore, bioavailability, metabolism and the use of benzoxazole as a bioisostere are discussed. The review is extended to cover structure-activity relationship studies of 2-substituted benzoxazoles, 2-substituted oxazolopyridines, and in perspective, application of the recently published novel heterocycle oxazolopyrazine in medicinal chemistry studies.
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Affiliation(s)
- Charles S Demmer
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Lennart Bunch
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
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Demmer CS, Hansen JC, Kehler J, Bunch L. New Palladium-Catalyzed Domino Reaction with Intramolecular Ring Closure of anN-(2-Chloro-3-heteroaryl)arylamide: First Synthesis of Oxazolo[4,5-b]pyrazines. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300845] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Huynh THV, Demmer CS, Abrahamsen B, Marcher E, Frykman M, Jensen AA, Bunch L. Structure-activity-relationship study of N-acyl-N-phenylpiperazines as potential inhibitors of the Excitatory Amino Acid Transporters (EAATs): improving the potency of a micromolar screening Hit is not truism. SpringerPlus 2013; 2:112. [PMID: 25530930 PMCID: PMC4225009 DOI: 10.1186/2193-1801-2-112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Accepted: 02/28/2013] [Indexed: 11/10/2022]
Abstract
Abstract
The excitatory amino acid transporters (EAATs) are transmembrane proteins responsible for the uptake of (S)-glutamate from the synaptic cleft. To date, five subtypes EAAT1-5 have been identified for which selective inhibitors have been discovered for EAAT1 and EAAT2. By screening of a commercially available compound library consisting of 4,000 compounds, N-acyl-N-phenylpiperazine analog (±)-
exo
-1 was identified to be a non-selective inhibitor at EAAT1-3 displaying IC50 values in the mid-micromolar range (10 μ M, 40 μ M and 30 μ M at EAAT1, 2 and 3, respectively). Subsequently, we designed and synthesized a series of analogs to explore the structure-activity-relationship of this scaffold in the search for analogs characterized by increased inhibitory potency and/or EAAT subtype selectivity. Despite extensive efforts, all analogs of (±)-
exo
-1 proved to be either inactive or to have least 3-fold lower inhibitory potency than the lead, and furthermore none of the active analogs displayed selectivity for a particular subtype amongst the EAAT1-3. On the basis of our findings, we speculate that (±)-
exo
-1 binds to a recess (deepening) on the EAAT proteins than a well-defined pocket.
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14
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Demmer CS, Krogsgaard-Larsen N, Bunch L. Review on modern advances of chemical methods for the introduction of a phosphonic acid group. Chem Rev 2011; 111:7981-8006. [PMID: 22010799 DOI: 10.1021/cr2002646] [Citation(s) in RCA: 404] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Charles S Demmer
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
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