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Waterloo L, Hübner H, Fierro F, Pfeiffer T, Brox R, Löber S, Weikert D, Niv MY, Gmeiner P. Discovery of 2-Aminopyrimidines as Potent Agonists for the Bitter Taste Receptor TAS2R14. J Med Chem 2023; 66:3499-3521. [PMID: 36847646 DOI: 10.1021/acs.jmedchem.2c01997] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
The bitter taste receptor TAS2R14 is a G protein-coupled receptor that is found on the tongue as well as in the human airway smooth muscle and other extraoral tissues. Because its activation causes bronchodilatation, TAS2R14 is a potential target for the treatment of asthma or chronic obstructive pulmonary disease. Structural variations of flufenamic acid, a nonsteroidal anti-inflammatory drug, led us to 2-aminopyridines showing considerable efficacy and potency in an IP1accumulation assay. In combination with an exchange of the carboxylic moiety by a tetrazole unit, a set of promising new TAS2R14 agonists was developed. The most potent ligand 28.1 (EC50 = 72 nM) revealed a six-fold higher potency than flufenamic acid and a maximum efficacy of 129%. Besides its unprecedented TAS2R14 activation, 28.1 revealed marked selectivity over a panel of 24 non-bitter taste human G protein-coupled receptors.
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Affiliation(s)
- Lukas Waterloo
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, Erlangen 91058, Germany
| | - Harald Hübner
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, Erlangen 91058, Germany
| | - Fabrizio Fierro
- The Robert H. Smith Faculty of Agriculture, Food and Environment, Institute of Biochemistry, Food Science and Nutrition, The Hebrew University, Rehovot 7610001, Israel
| | - Tara Pfeiffer
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, Erlangen 91058, Germany
| | - Regine Brox
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, Erlangen 91058, Germany
| | - Stefan Löber
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, Erlangen 91058, Germany
| | - Dorothee Weikert
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, Erlangen 91058, Germany
| | - Masha Y Niv
- The Robert H. Smith Faculty of Agriculture, Food and Environment, Institute of Biochemistry, Food Science and Nutrition, The Hebrew University, Rehovot 7610001, Israel
| | - Peter Gmeiner
- Department of Chemistry and Pharmacy, Medicinal Chemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Str. 10, Erlangen 91058, Germany
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C H Bond activation of 2-isobutylthiazole at C5 position catalysed by Pd-N-heterocyclic carbene complexes. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121730] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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3
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Moseev TD, Varaksin MV, Gorlov DA, Charushin VN, Chupakhin ON. Recent advances in the functionalization of polyfluoro(aza)aromatics via C-C coupling strategies. Org Biomol Chem 2021; 19:4429-4459. [PMID: 33908555 DOI: 10.1039/d1ob00472g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyfluoro(aza)aromatic compounds are of interest in various fields of practical applications, such as medicinal and agrochemistry, materials science and advanced technologies. The C-C coupling reactions are known to be a promising synthetic tool to create challenging fluorinated molecules of diverse architectures. In this review, we have summarized the recent advances in the functionalization of polyfluoro(aza)aromatics via both transition metal-catalyzed and metal-free C-C coupling reactions for the period from 2006 to the beginning of 2021. Also, mechanistic features for chemical transformations of fluoroarene scaffolds and new opportunities for practical applications of the designed fluorinated molecules have been highlighted.
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Affiliation(s)
- Timofey D Moseev
- Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia.
| | - Mikhail V Varaksin
- Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia. and Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 22 S. Kovalevskaya Str., 620990 Ekaterinburg, Russia.
| | - Denis A Gorlov
- Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russia
| | - Valery N Charushin
- Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia. and Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 22 S. Kovalevskaya Str., 620990 Ekaterinburg, Russia.
| | - Oleg N Chupakhin
- Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia. and Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 22 S. Kovalevskaya Str., 620990 Ekaterinburg, Russia.
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Khan S, Buğday N, Yaşar S, Ullah N, Özdemir İ. Pd-N-heterocyclic carbene complex catalysed C–H bond activation of 2-isobutylthiazole at the C5 position with aryl bromides. NEW J CHEM 2021. [DOI: 10.1039/d1nj00514f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An effective and efficient catalytic system has been reported for the synthesis of C5-arylated 2-isobutylthiazoles.
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Affiliation(s)
- Siraj Khan
- Quaid-i-Azam University
- Faculty of Biological Sciences
- Department of Pharmacy
- Islamabad
- Pakistan
| | - Nesrin Buğday
- İnönü University
- Faculty of Science and art
- Department of Chemistry
- Malatya
- Turkey
| | - Sedat Yaşar
- İnönü University
- Faculty of Science and art
- Department of Chemistry
- Malatya
- Turkey
| | - Naseem Ullah
- Quaid-i-Azam University
- Faculty of Biological Sciences
- Department of Pharmacy
- Islamabad
- Pakistan
| | - İsmail Özdemir
- İnönü University
- Faculty of Science and art
- Department of Chemistry
- Malatya
- Turkey
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Impact of the functionalized tetrazole ring on the electrochemical behavior and biological activities of novel nickel (II) complexes with a series of tetrazole derivatives. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119436] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Colletto C, Panigrahi A, Fernández-Casado J, Larrosa I. Ag(I)-C-H Activation Enables Near-Room-Temperature Direct α-Arylation of Benzo[ b]thiophenes. J Am Chem Soc 2018; 140:9638-9643. [PMID: 29983049 PMCID: PMC6370252 DOI: 10.1021/jacs.8b05361] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
![]()
The
first example of near-room-temperature α-arylation of
benzo[b]thiophenes is reported. The discovery rests
on the observation of a switch in α-/β-regioselectivity
at different loadings of Pd2(dba)3·CHCl3 in the coupling between benzo[b]thiophene
and 4-iodotoluene. We show that this unprecedented regioselectivity
switch is driven by a Ag(I)-mediated C–H activation at the
α-C–H position, which becomes the dominant mode of reactivity
at low concentrations of Pd. Competition experiments, kinetic studies,
KIE, and D/H scrambling experiments have been carried out supporting
this mechanism.
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Affiliation(s)
- Chiara Colletto
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , U.K
| | - Adyasha Panigrahi
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , U.K
| | | | - Igor Larrosa
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , U.K
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