Search Results - "Johnston, Victor K"
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Pharmacological characterization of MK-0974 [N-[(3R,6S)-6-(2,3-difluorophenyl)-2-oxo-1-(2,2,2-trifluoroethyl)azepan-3-yl]-4-(2-oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin-1-yl)piperidine-1-carboxamide], a potent and orally active calcitonin gene-related peptide receptor antagonist for the treatment of migraine
Published in The Journal of pharmacology and experimental therapeutics (01-02-2008)“…Calcitonin gene-related peptide (CGRP) is a potent neuropeptide that plays a key role in the pathophysiology of migraine headache. CGRP levels in the cranial…”
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Potent, Orally Bioavailable Calcitonin Gene-Related Peptide Receptor Antagonists for the Treatment of Migraine: Discovery of N-[(3R,6S)-6-(2,3-Difluorophenyl)-2-oxo-1- (2,2,2-trifluoroethyl)azepan-3-yl]-4- (2-oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin- 1-yl)piperidine-1-carboxamide (MK-0974)
Published in Journal of medicinal chemistry (15-11-2007)“…Calcitonin gene-related peptide (CGRP) has been implicated in the pathogenesis of migraine. Herein we describe optimization of CGRP receptor antagonists based…”
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Identification and Biological Characterization of Heterocyclic Inhibitors of the Hepatitis C Virus RNA-dependent RNA Polymerase
Published in The Journal of biological chemistry (11-10-2002)“…The hepatitis C virus (HCV) NS5B protein encodes an RNA-dependent RNA polymerase (RdRp), the primary catalytic enzyme of the HCV replicase complex. We…”
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Resistance Profile of a Hepatitis C Virus RNA-Dependent RNA Polymerase Benzothiadiazine Inhibitor
Published in Antimicrobial Agents and Chemotherapy (01-11-2003)“…Classifications Services AAC Citing Articles Google Scholar PubMed Related Content Social Bookmarking CiteULike Delicious Digg Facebook Google+ Mendeley Reddit…”
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Arresting Initiation of Hepatitis C Virus RNA Synthesis Using Heterocyclic Derivatives
Published in The Journal of biological chemistry (09-05-2003)“…The hepatitis C virus (HCV) NS5B protein encodes an RNA-dependent RNA polymerase (RdRp), the primary catalytic enzyme of the HCV replicase complex. Recently,…”
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An efficient, asymmetric solid-phase synthesis of benzothiadiazine-substituted tetramic acids: Potent inhibitors of the hepatitis C virus RNA-dependent RNA polymerase
Published in Bioorganic & medicinal chemistry letters (15-04-2006)“…Solid-phase synthesis and SAR are described for a series of benzothiadiazine-substituted tetramic acid inhibitors of the hepatitis C virus RNA-dependent RNA…”
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3-(1,1-Dioxo-2H-(1,2,4)-benzothiadiazin-3-yl)-4-hydroxy-2(1H)-quinolinones, Potent Inhibitors of Hepatitis C Virus RNA-Dependent RNA Polymerase
Published in Journal of medicinal chemistry (09-02-2006)“…Recently, we disclosed a new class of HCV polymerase inhibitors discovered through high-throughput screening (HTS) of the GlaxoSmithKline proprietary compound…”
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Substituted benzothiadizine inhibitors of Hepatitis C virus polymerase
Published in Bioorganic & medicinal chemistry letters (01-08-2009)“…The optimisation of benzothiadiazine HCV polymerase inhibitors 2 with improved potency is reported. The synthesis and optimisation of HCV NS5B polymerase…”
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Synthesis and biological activity of heteroaryl 3-(1,1-dioxo-2H-(1,2,4)-benzothiadizin-3-yl)-4-hydroxy-2(1H)-quinolinone derivatives as hepatitis C virus NS5B polymerase inhibitors
Published in Bioorganic & medicinal chemistry letters (01-08-2009)“…Modification of the benzo rings of 3-(1,1-dioxo-2H-(1,2,4)-benzothiadiazin-3-yl)-4-hydroxy-2(1H)-quinolinones into heteroaromatic systems was investigated to…”
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The discovery of highly potent CGRP receptor antagonists
Published in Bioorganic & medicinal chemistry letters (2009)“…Rational modification of a previously identified spirohydantoin lead structure has identified a series of potent spiroazaoxindole CGRP receptor antagonists…”
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Potent benzimidazolone-based CGRP receptor antagonists
Published in Bioorganic & medicinal chemistry (01-12-2008)“…The previously disclosed spirohydantoin-based CGRP receptor antagonists were optimized for potency through modification of the benzimidazolone substituents…”
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The identification of potent, orally bioavailable tricyclic CGRP receptor antagonists
Published in Bioorganic & medicinal chemistry letters (15-08-2009)“…A series of tricyclic CGRP receptor antagonists was optimized in order to improve oral bioavailability. Attenuation of polar surface area and incorporation of…”
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Kinetic profile of a heterocyclic HCV replicon RNA synthesis inhibitor
Published in Biochemical and biophysical research communications (21-11-2003)“…Recently, a benzo-1,2,4-thiadiazine was shown to be a potent, specific inhibitor of the hepatitis C virus (HCV) RNA polymerase [J. Biol. Chem. 277 (2002)…”
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Enzymatic activities of the GB virus-B RNA-dependent RNA polymerase
Published in Virology (New York, N.Y.) (01-08-2003)“…The GB virus-B (GBV-B) nonstructural protein 5B (NS5B) encodes an RNA-dependent RNA polymerase (RdRp) with greater than 50% sequence similarity to the…”
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Intracellular hepatitis C virus RNA-dependent RNA polymerase activity
Published in Journal of virological methods (01-10-2003)“…Hepatitis C virus (HCV) infection represents a significant health concern in over 170 million individuals worldwide. Recently, Huh7 cell-based hepatitis C…”
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