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Niaz L, Saddique FA, Aslam S, Ahmad M, Mohsin NUA. Recent synthetic methodologies for pyridopyrazines: An update. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1786123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Liaba Niaz
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | | | - Sana Aslam
- Department of Chemistry, Government College Women University, Faisalabad, Pakistan
| | - Matloob Ahmad
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Noor ul Amin Mohsin
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
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Benso B, Bustos D, Zarraga MO, Gonzalez W, Caballero J, Brauchi S. Chalcone derivatives as non-canonical ligands of TRPV1. Int J Biochem Cell Biol 2019; 112:18-23. [PMID: 31026506 DOI: 10.1016/j.biocel.2019.04.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 04/18/2019] [Accepted: 04/22/2019] [Indexed: 10/27/2022]
Abstract
Transient receptor potential vanilloid 1 (TRPV1) is a polymodal cation channel activated by heat, voltage, and ligands. Also known as the capsaicin receptor, TRPV1 is expressed in numerous tissues by different cell types, including peripheral sensory fibers where acts as a thermal and chemical detector in nociceptive pathways. TRPV1 channels are able to bind a wide range of ligands, including a number of vanilloid derivatives all modulating channel's activity. When expressed by sensory neurons, activation of TRPV1 channels by heat (>40 °C), capsaicin (sub-micromolar), or acid environment (pH < 6), causes depolarization leading to burning pain sensation in mammals. Naturally occurring chalcones (1,3-diaryl-2-propen-1-ones) have been reported as effective inhibitors of TRPV1. Their relatively simple chemical structure and the possibility for handy chemical modification make them attractive ligands for the treatment of peripheral pain. By taking advantage of the structural information available, here we discuss pharmacological properties of chalcones and their putative mechanism of binding to TRPV1 channels.
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Affiliation(s)
- Bruna Benso
- School of Dentistry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, RM, Chile; Department of Physiology, Faculty of Medicine, Universidad Austral de Chile, Valdivia, Chile; Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Valdivia, Chile
| | - Daniel Bustos
- Center for Bioinformatics and Molecular Simulation (CBSM), Universidad de Talca, Talca, Chile
| | - Miguel O Zarraga
- Department of Organic Chemistry, Faculty of Chemical Sciences, Universidad de Concepcion, Concepcion, Chile
| | - Wendy Gonzalez
- Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Valdivia, Chile; Center for Bioinformatics and Molecular Simulation (CBSM), Universidad de Talca, Talca, Chile
| | - Julio Caballero
- Center for Bioinformatics and Molecular Simulation (CBSM), Universidad de Talca, Talca, Chile
| | - Sebastian Brauchi
- Department of Physiology, Faculty of Medicine, Universidad Austral de Chile, Valdivia, Chile; Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Valdivia, Chile.
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Sikine M, Mague JT, Kandri Rodi Y, Essassi EM, Ouzidan Y. 7-Bromo-2,3-bis[(prop-2-yn-1-yl)sulfanyl]pyrido[2,3- b]pyrazine. IUCRDATA 2016. [DOI: 10.1107/s2414314616018812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
In the title compound, C13H8BrN3S2, one propynyl substituent lies approximately in the plane of the pyridopyrazine ring system, while the other is twisted away from this plane. In the crystal, offset π–π stacking interactions between the pyridine and pyrazine rings with a centroid–centroid distance of 3.740 (1) Å stack the molecules along thea-axis direction. At the conclusion of the initial refinement, a significant residual peak remained in the difference map. This suggested an alternate location for the Br atom but at a very low occupancy. Further refinement with Br disordered over two sites yielded a population ratio for the two Br sites of 97:3. As the refined location of the minor Br site leads to unequal C—C—Br angles, we feel that the results indicate a `whole molecule' disorder rather than the presence of a minor amount of an isomer. Unfortunately, the very low amount of the second component of the disorder prevented the location of any of its other atoms.
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Clarke SL, McGlacken GP. Methyl fluorosulfonyldifluoroacetate (MFSDA): An Underutilised Reagent for Trifluoromethylation. Chemistry 2016; 23:1219-1230. [PMID: 27430725 DOI: 10.1002/chem.201602511] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Indexed: 11/09/2022]
Abstract
The introduction of fluorine groups to pharmaceutical compounds can have a dramatic effect on the lipophilicity and metabolic stability of the molecule in vivo. Around 20 % of drugs contain at least one fluorine atom. The trifluoromethyl group is known to have beneficial effects and can dramatically affect the biological activity when substituted for a methyl group, for example. In any case, the direct and late-stage introduction of a trifluoromethyl group is a powerful transformation in the tool box of the medicinal chemist. The use of methyl fluorosulfonyldifluoroacetate (MFSDA) as a relatively inexpensive reagent for trifluoromethylation was first reported in 1989; however, in our opinion it has been somewhat underutilised. Herein, a comprehensive review of trifluoromethylation using MFSDA is reported, which we hope will further expose readers to this useful reagent.
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Affiliation(s)
- Sarah L Clarke
- Department of Chemistry and Analytical and Biological Chemistry Research Facility (ABCRF), University College Cork, College Road, Cork, Ireland
| | - Gerard P McGlacken
- Department of Chemistry and Analytical and Biological Chemistry Research Facility (ABCRF), University College Cork, College Road, Cork, Ireland
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Novel scaffolds for modulation of TRPV1 identified with pharmacophore modeling and virtual screening. Future Med Chem 2015; 7:243-56. [PMID: 25826358 PMCID: PMC6422283 DOI: 10.4155/fmc.14.168] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Aim The transient receptor potential vanilloid type 1 (TRPV1) is responsible for pain perception in the peripheral nervous system (PNS). TRPV1 is thus considered a versatile target for development of non-opioid analgesics. Results Pharmacophore-based clustering of a publicly available data set of TRPV1 antagonists revealed a set of models, which were validated with data sets of inactive compounds, decoys and known drug candidates. The top ranked pharmacophore models were subsequently used for virtual screening. Based on a unique in-house protocol, a set of compounds was selected and biologically tested for modulation of TRPV1 in a voltage-clamp model. Conclusion Pharmacophore models extracted from large public data sets are a valuable source for identification of novel scaffolds for TRPV1 receptor modulation.
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Bardasov IN, Alekseeva AU, Ershov OV, Belikov MY. Four component DHARMA-synthesis of some densely functionalized 1,8-naphthyridines. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.08.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Zhang CP, Chen QY, Guo Y, Xiao JC, Gu YC. Difluoromethylation and trifluoromethylation reagents derived from tetrafluoroethane β-sultone: Synthesis, reactivity and applications. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2013.11.010] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Cleator E, Scott JP, Avalle P, Bio MM, Brewer SE, Davies AJ, Gibb AD, Sheen FJ, Stewart GW, Wallace DJ, Wilson. RD. Process Development and Multikilogram-Scale Synthesis of a TRPV1 Antagonist. Org Process Res Dev 2013. [DOI: 10.1021/op400304h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Ed Cleator
- Global Process Chemistry, Merck Sharp and Dohme Research Laboratories, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU, U.K
| | - Jeremy P. Scott
- Global Process Chemistry, Merck Sharp and Dohme Research Laboratories, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU, U.K
| | - Paulo Avalle
- Global Process Chemistry, Merck Sharp and Dohme Research Laboratories, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU, U.K
| | - Matthew M. Bio
- Global Process Chemistry, Merck Sharp and Dohme Research Laboratories, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU, U.K
| | - Sarah E. Brewer
- Global Process Chemistry, Merck Sharp and Dohme Research Laboratories, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU, U.K
| | - Antony J. Davies
- Global Process Chemistry, Merck Sharp and Dohme Research Laboratories, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU, U.K
| | - Andrew D. Gibb
- Global Process Chemistry, Merck Sharp and Dohme Research Laboratories, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU, U.K
| | - Faye J. Sheen
- Global Process Chemistry, Merck Sharp and Dohme Research Laboratories, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU, U.K
| | - Gavin W. Stewart
- Global Process Chemistry, Merck Sharp and Dohme Research Laboratories, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU, U.K
| | - Debra J. Wallace
- Global Process Chemistry, Merck Sharp and Dohme Research Laboratories, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU, U.K
| | - Robert D. Wilson.
- Global Process Chemistry, Merck Sharp and Dohme Research Laboratories, Hertford Road, Hoddesdon, Hertfordshire EN11 9BU, U.K
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Kim NJ, Li FN, Lee JH, Park SG, Kim K, Lim C, Han YT, Yun H, Jung JW, Park HG, Kim HD, Woo BY, Shin SS, Kim SY, Choi JK, Jeong YS, Park Y, Park YH, Kim DD, Choi S, Suh YG. Heterocycle-linked Phenylbenzyl Amides as Novel TRPV1 Antagonists and Their TRPV1 Binding Modes: Constraint-Induced Enhancement of In Vitro and In Vivo Activities. Chem Asian J 2012. [DOI: 10.1002/asia.201200730] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nam-Jung Kim
- College of Pharmacy, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea
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Three-dimensional quantitative structure–activity relationship (3D-QSAR) analysis and molecular docking-based combined in silico rational approach to design potent and novel TRPV1 antagonists. Med Chem Res 2012. [DOI: 10.1007/s00044-012-0226-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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