1
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Yang X, Tian X, Sun N, Hu B, Shen Z, Hu X, Jin L. Geometry-Constrained N, N, O-Nickel Catalyzed α-Alkylation of Unactivated Amides via a Borrowing Hydrogen Strategy. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Xue Yang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Xiaoyu Tian
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Nan Sun
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Baoxiang Hu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Zhenlu Shen
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Xinquan Hu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Liqun Jin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, The Chinese Academy of Sciences, Lanzhou 730000, P. R. China
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2
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Chan SW, Shafi T, Ford RC. Kite-Shaped Molecules Block SARS-CoV-2 Cell Entry at a Post-Attachment Step. Viruses 2021; 13:v13112306. [PMID: 34835112 PMCID: PMC8619434 DOI: 10.3390/v13112306] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/02/2021] [Accepted: 11/15/2021] [Indexed: 12/13/2022] Open
Abstract
Anti-viral small molecules are currently lacking for treating coronavirus infection. The long development timescales for such drugs are a major problem, but could be shortened by repurposing existing drugs. We therefore screened a small library of FDA-approved compounds for potential severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) antivirals using a pseudovirus system that allows a sensitive read-out of infectivity. A group of structurally-related compounds, showing moderate inhibitory activity with IC50 values in the 2–5 μM range, were identified. Further studies demonstrated that these “kite-shaped” molecules were surprisingly specific for SARS-CoV-1 and SARS-CoV-2 and that they acted early in the entry steps of the viral infectious cycle, but did not affect virus attachment to the cells. Moreover, the compounds were able to prevent infection in both kidney- and lung-derived human cell lines. The structural homology of the hits allowed the production of a well-defined pharmacophore that was found to be highly accurate in predicting the anti-viral activity of the compounds in the screen. We discuss the prospects of repurposing these existing drugs for treating current and future coronavirus outbreaks.
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3
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Chan S, Shafi T, Ford RC. Kite-shaped molecules block SARS-CoV-2 cell entry at a post-attachment step.. [DOI: 10.1101/2021.05.29.446272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
ABSTRACTAnti-viral small molecules are currently lacking for treating coronavirus infection. The long development timescales for such drugs are a major problem, but could be shortened by repurposing existing drugs. We therefore screened a small library of FDA-approved compounds for potential severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) antivirals using a pseudovirus system that allows a sensitive read-out of infectivity. A group of structurally-related compounds, showing moderate inhibitory activity with IC50values in the 1-5µM range, were identified. Further studies demonstrated that these ‘kite-shaped’ molecules were surprisingly specific for SARS-CoV and SARS-CoV-2 and that they acted early in the entry steps of the viral infectious cycle, but did not affect virus attachment to the cells. Moreover the compounds were able to prevent infection in both kidney- and lung-derived human cell lines. The structural homology of the hits allowed the production of a well-defined pharmacophore that was found to be highly accurate in predicting the anti-viral activity of the compounds in the screen. We discuss the prospects of repurposing these existing drugs for treating current and future coronavirus outbreaks.
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4
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Zhang W, Yang C, Zhang ZP, Li X, Cheng JP. Visible-Light-Triggered Cyanoalkylation of para-Quinone Methides and Its Application to the Synthesis of GPR40 Agonists. Org Lett 2019; 21:4137-4142. [DOI: 10.1021/acs.orglett.9b01325] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wei Zhang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Chen Yang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Zhi-Pei Zhang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Xin Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Jin-Pei Cheng
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
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5
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Bell M, Krentz T, Keith Nelson J, Schadler L, Wu K, Breneman C, Zhao S, Hillborg H, Benicewicz B. Investigation of dielectric breakdown in silica-epoxy nanocomposites using designed interfaces. J Colloid Interface Sci 2017; 495:130-139. [PMID: 28193511 DOI: 10.1016/j.jcis.2017.02.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 01/30/2017] [Accepted: 02/02/2017] [Indexed: 11/16/2022]
Abstract
Adding nano-sized fillers to epoxy has proven to be an effective method for improving dielectric breakdown strength (DBS). Evidence suggests that dispersion state, as well as chemistry at the filler-matrix interface can play a crucial role in property enhancement. Herein we investigate the contribution of both filler dispersion and surface chemistry on the AC dielectric breakdown strength of silica-epoxy nanocomposites. Ligand engineering was used to synthesize bimodal ligands onto 15nm silica nanoparticles consisting of long epoxy compatible, poly(glycidyl methacrylate) (PGMA) chains, and short, π-conjugated, electroactive surface ligands. Surface initiated RAFT polymerization was used to synthesize multiple graft densities of PGMA chains, ultimately controlling the dispersion of the filler. Thiophene, anthracene, and terthiophene were employed as π-conjugated surface ligands that act as electron traps to mitigate avalanche breakdown. Investigation of the synthesized multifunctional nanoparticles was effective in defining the maximum particle spacing or free space length (Lf) that still leads to property enhancement, as well as giving insight into the effects of varying the electronic nature of the molecules at the interface on breakdown strength. Optimization of the investigated variables was shown to increase the AC dielectric breakdown strength of epoxy composites as much as 34% with only 2wt% silica loading.
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Affiliation(s)
- Michael Bell
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29205, United States.
| | - Timothy Krentz
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, United States.
| | - J Keith Nelson
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, United States.
| | - Linda Schadler
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, United States.
| | - Ke Wu
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, United States.
| | - Curt Breneman
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, United States.
| | - Su Zhao
- ABB AB, Corporate Research, Västerås SE-721 78, Sweden.
| | | | - Brian Benicewicz
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29205, United States.
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6
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Zhao JL, Jiang XK, Wu C, Wang CZ, Zeng X, Redshaw C, Yamato T. An Unprecedented Photochemical Reaction for Anthracene-Containing Derivatives. Chemphyschem 2016; 17:3217-3222. [PMID: 27447866 DOI: 10.1002/cphc.201600783] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Indexed: 01/06/2023]
Abstract
A series of anthracene-containing derivatives have been synthesised and characterised. The photochemical behaviour of these derivatives have been investigated by 1 H NMR spectroscopy. An unprecedented photolysis reaction for anthracene-containing derivatives was observed in the case of anthracenes directly armed with a -CH2 O-R group upon UV irradiation. The photolysis reaction process has been demonstrated to occur in three steps. Firstly, the anthracene-containing derivatives are converted into the corresponding endoperoxide intermediate upon UV irradiation in the presence of air; then, the endoperoxide intermediate is decomposed to the corresponding starting compound and 9-anthraldehyde; finally, 9-anthraldehyde is further oxidised to anthraquinone. Additionally, the photolysis reaction of anthracene-containing derivatives is significantly promoted in the presence of a thiacalix[4]arene platform.
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Affiliation(s)
- Jiang-Lin Zhao
- Department of Applied Chemistry, Faculty of Science and Engineering, Saga University, Honjo-machi 1, Saga, 840-8502, Japan
| | - Xue-Kai Jiang
- Department of Applied Chemistry, Faculty of Science and Engineering, Saga University, Honjo-machi 1, Saga, 840-8502, Japan
| | - Chong Wu
- Department of Applied Chemistry, Faculty of Science and Engineering, Saga University, Honjo-machi 1, Saga, 840-8502, Japan
| | - Chuan-Zeng Wang
- Department of Applied Chemistry, Faculty of Science and Engineering, Saga University, Honjo-machi 1, Saga, 840-8502, Japan
| | - Xi Zeng
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, Guizhou, 550025, China
| | - Carl Redshaw
- Department of Chemistry, The University of Hull, Cottingham Road, Hull, Yorkshire, HU6 7RX, UK
| | - Takehiko Yamato
- Department of Applied Chemistry, Faculty of Science and Engineering, Saga University, Honjo-machi 1, Saga, 840-8502, Japan.
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7
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Kiss R, Keserű GM. Structure-based discovery and binding site analysis of histamine receptor ligands. Expert Opin Drug Discov 2016; 11:1165-1185. [DOI: 10.1080/17460441.2016.1245288] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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8
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Kuhne S, Kooistra AJ, Bosma R, Bortolato A, Wijtmans M, Vischer HF, Mason JS, de Graaf C, de Esch IJP, Leurs R. Identification of Ligand Binding Hot Spots of the Histamine H1 Receptor following Structure-Based Fragment Optimization. J Med Chem 2016; 59:9047-9061. [DOI: 10.1021/acs.jmedchem.6b00981] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Sebastiaan Kuhne
- Amsterdam
Institute for Molecules, Medicines and Systems (AIMMS), Division of
Medicinal Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Albert J. Kooistra
- Amsterdam
Institute for Molecules, Medicines and Systems (AIMMS), Division of
Medicinal Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Reggie Bosma
- Amsterdam
Institute for Molecules, Medicines and Systems (AIMMS), Division of
Medicinal Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Andrea Bortolato
- Heptares Therapeutics Ltd., BioPark,
Broadwater Road, Welwyn Garden City, Herts AL7 3AX, U.K
| | - Maikel Wijtmans
- Amsterdam
Institute for Molecules, Medicines and Systems (AIMMS), Division of
Medicinal Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Henry F. Vischer
- Amsterdam
Institute for Molecules, Medicines and Systems (AIMMS), Division of
Medicinal Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Jonathan S. Mason
- Heptares Therapeutics Ltd., BioPark,
Broadwater Road, Welwyn Garden City, Herts AL7 3AX, U.K
| | - Chris de Graaf
- Amsterdam
Institute for Molecules, Medicines and Systems (AIMMS), Division of
Medicinal Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Iwan J. P. de Esch
- Amsterdam
Institute for Molecules, Medicines and Systems (AIMMS), Division of
Medicinal Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Rob Leurs
- Amsterdam
Institute for Molecules, Medicines and Systems (AIMMS), Division of
Medicinal Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
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9
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Aparici-Espert I, Francés-Monerris A, Rodríguez-Muñiz GM, Roca-Sanjuán D, Lhiaubet-Vallet V, Miranda MA. A Combined Experimental and Theoretical Approach to the Photogeneration of 5,6-Dihydropyrimidin-5-yl Radicals in Nonaqueous Media. J Org Chem 2016; 81:4031-8. [DOI: 10.1021/acs.joc.6b00314] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Isabel Aparici-Espert
- Instituto
Universitario Mixto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Avda de los Naranjos s/n, 46022 València, Spain
| | | | - Gemma M. Rodríguez-Muñiz
- Instituto
Universitario Mixto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Avda de los Naranjos s/n, 46022 València, Spain
| | - Daniel Roca-Sanjuán
- Instituto
de Ciencia Molecular, Universitat de València, P.O. Box 22085, 46071 València, Spain
| | - Virginie Lhiaubet-Vallet
- Instituto
Universitario Mixto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Avda de los Naranjos s/n, 46022 València, Spain
| | - Miguel A. Miranda
- Instituto
Universitario Mixto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Avda de los Naranjos s/n, 46022 València, Spain
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10
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Kooistra AJ, Kuhne S, de Esch IJP, Leurs R, de Graaf C. A structural chemogenomics analysis of aminergic GPCRs: lessons for histamine receptor ligand design. Br J Pharmacol 2014; 170:101-26. [PMID: 23713847 DOI: 10.1111/bph.12248] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 04/26/2013] [Accepted: 05/03/2013] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND AND PURPOSE Chemogenomics focuses on the discovery of new connections between chemical and biological space leading to the discovery of new protein targets and biologically active molecules. G-protein coupled receptors (GPCRs) are a particularly interesting protein family for chemogenomics studies because there is an overwhelming amount of ligand binding affinity data available. The increasing number of aminergic GPCR crystal structures now for the first time allows the integration of chemogenomics studies with high-resolution structural analyses of GPCR-ligand complexes. EXPERIMENTAL APPROACH In this study, we have combined ligand affinity data, receptor mutagenesis studies, and amino acid sequence analyses to high-resolution structural analyses of (hist)aminergic GPCR-ligand interactions. This integrated structural chemogenomics analysis is used to more accurately describe the molecular and structural determinants of ligand affinity and selectivity in different key binding regions of the crystallized aminergic GPCRs, and histamine receptors in particular. KEY RESULTS Our investigations highlight interesting correlations and differences between ligand similarity and ligand binding site similarity of different aminergic receptors. Apparent discrepancies can be explained by combining detailed analysis of crystallized or predicted protein-ligand binding modes, receptor mutation studies, and ligand structure-selectivity relationships that identify local differences in essential pharmacophore features in the ligand binding sites of different receptors. CONCLUSIONS AND IMPLICATIONS We have performed structural chemogenomics studies that identify links between (hist)aminergic receptor ligands and their binding sites and binding modes. This knowledge can be used to identify structure-selectivity relationships that increase our understanding of ligand binding to (hist)aminergic receptors and hence can be used in future GPCR ligand discovery and design.
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Affiliation(s)
- A J Kooistra
- Faculty of Sciences, Amsterdam Institute for Molecules, Medicines and Systems, VU University Amsterdam, The Netherlands
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11
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Prasad P, Khan I, Kondaiah P, Chakravarty AR. Mitochondria‐Targeting Oxidovanadium(IV) Complex as a Near‐IR Light Photocytotoxic Agent. Chemistry 2013; 19:17445-55. [DOI: 10.1002/chem.201303487] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Indexed: 01/08/2023]
Affiliation(s)
- Puja Prasad
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, Karnataka (India), Fax: (+91) 80‐23600683
| | - Imran Khan
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore‐560012, Karnataka (India), Fax: (+91) 80‐23600999
| | - Paturu Kondaiah
- Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore‐560012, Karnataka (India), Fax: (+91) 80‐23600999
| | - Akhil R. Chakravarty
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, Karnataka (India), Fax: (+91) 80‐23600683
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12
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Ito A, Stewart DJ, Knight TE, Fang Z, Brennaman MK, Meyer TJ. Excited-State Dynamics in Rigid Media: Evidence for Long-Range Energy Transfer. J Phys Chem B 2013; 117:3428-38. [DOI: 10.1021/jp400514r] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Akitaka Ito
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North
Carolina 27599, United States
| | - David J. Stewart
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North
Carolina 27599, United States
| | - Troy E. Knight
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North
Carolina 27599, United States
| | - Zhen Fang
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North
Carolina 27599, United States
| | - M. Kyle Brennaman
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North
Carolina 27599, United States
| | - Thomas J. Meyer
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North
Carolina 27599, United States
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13
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Homology modeling of the human 5-HT1A, 5-HT2A, D1, and D2 receptors: model refinement with molecular dynamics simulations and docking evaluation. J Mol Model 2012; 18:3639-55. [DOI: 10.1007/s00894-012-1368-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Accepted: 01/23/2012] [Indexed: 12/22/2022]
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14
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Aminomethyltetrazoles as potential inhibitors of the γ-aminobutyric acid transporters mGAT1–mGAT4: Synthesis and biological evaluation. Bioorg Med Chem 2011; 19:6492-504. [DOI: 10.1016/j.bmc.2011.08.039] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 08/18/2011] [Accepted: 08/19/2011] [Indexed: 11/21/2022]
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15
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Pecic S, Makkar P, Chaudhary S, Reddy BV, Navarro HA, Harding WW. Affinity of aporphines for the human 5-HT2A receptor: insights from homology modeling and molecular docking studies. Bioorg Med Chem 2010; 18:5562-75. [PMID: 20621490 DOI: 10.1016/j.bmc.2010.06.043] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2010] [Revised: 06/08/2010] [Accepted: 06/14/2010] [Indexed: 11/29/2022]
Abstract
Analogs of nantenine were docked into a modeled structure of the human 5-HT(2A) receptor using ICM Pro, GLIDE, and GOLD docking methods. The resultant docking scores were used to correlate with observed in vitro apparent affinity (K(e)) data. The GOLD docking algorithm when used with a homology model of 5-HT(2A), based on a bovine rhodopsin template and built by the program MODELLER, gives results which are most in agreement with the in vitro results. Further analysis of the docking poses among members of a C1 alkyl series of nantenine analogs, indicate that they bind to the receptor in a similar orientation, but differently than nantenine. Besides an important interaction between the protonated nitrogen of the C1 alkyl analogs and residue Asp155, we identified Ser242, Phe234, and Gly238 as key residues responsible for the affinity of these compounds for the 5-HT(2A) receptor. Specifically, the ability of some of these analogs to establish a H-bond with Ser242 and hydrophobic interactions with Phe234 and Gly238 appears to explain their enhanced affinity as compared to nantenine.
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Affiliation(s)
- Stevan Pecic
- Department of Chemistry, Hunter College, City University of New York, 695 Park Avenue, New York, NY 10065, USA
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16
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McRobb FM, Capuano B, Crosby IT, Chalmers DK, Yuriev E. Homology Modeling and Docking Evaluation of Aminergic G Protein-Coupled Receptors. J Chem Inf Model 2010; 50:626-37. [DOI: 10.1021/ci900444q] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Fiona M. McRobb
- Medicinal Chemistry and Drug Action, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC 3052 Australia
| | - Ben Capuano
- Medicinal Chemistry and Drug Action, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC 3052 Australia
| | - Ian T. Crosby
- Medicinal Chemistry and Drug Action, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC 3052 Australia
| | - David K. Chalmers
- Medicinal Chemistry and Drug Action, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC 3052 Australia
| | - Elizabeth Yuriev
- Medicinal Chemistry and Drug Action, Monash Institute of Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, VIC 3052 Australia
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17
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9-Aminomethyl-9,10-dihydroanthracene (AMDA) analogs as structural probes for steric tolerance in 5-HT2A and H1 receptor binding sites. Bioorg Med Chem Lett 2009; 20:935-8. [PMID: 20045641 DOI: 10.1016/j.bmcl.2009.12.064] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2009] [Revised: 12/14/2009] [Accepted: 12/15/2009] [Indexed: 11/21/2022]
Abstract
Synthesis, radioligand binding and molecular modeling studies of several 9-aminomethyl-9,10-dihydroanthracene (AMDA) analogs were carried out to determine the extent of the steric tolerance associated with expansion of the tricyclic ring system and amine substitution at 5-HT(2A) and H(1) receptors. A mixture of (7,12-dihydrotetraphene-12-yl)methanamine and (6,11-dihydrotetracene-11-yl)methanamine in a 75-25% ratio was found to have an apparent K(i) of 10nM at the 5-HT(2A) receptor. A substantial binding affinity for (7,12-dihydrotetraphene-3-methoxy-12-yl)methanamine at the 5-HT(2A) receptor (K(i)=21 nM) was also observed. Interestingly, this compound was found to have 100-fold selectivity for 5-HT(2A) over the H(1) receptor (K(i)=2500 nM). N-Phenylalkyl-AMDA derivatives, in which the length of the alkyl chain varied from methylene to n-butylene, were found to have only weak affinity for both 5-HT(2A) and H(1) receptors (K(i)=223 to 964 nM). Our results show that large rigid annulated AMDA analogs can be sterically accommodated within the proposed 5-HT(2A) binding site.
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