Syrian Hamsters As a Clinically Relevant Model
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Efficient Synthesis of Pyrazolopyridines Containing a Chromane Backbone Through Domino Reaction
Efficient synthesis of pyrazolopyridines containing a chromane backbone through domino reaction Razieh Navari1, Saeed Balalaie*1,2, Saber Mehrparvar1, Fatemeh Darvish1, Frank Rominger3, Fatima Hamdan1 and Sattar Mirzaie1 Full Research Paper Open Access Address: Beilstein J. Org. Chem. 2019, 15, 874–880. 1Peptide Chemistry Research Center, K. N. Toosi University of doi:10.3762/bjoc.15.85 Technology, P. O. Box 15875-4416, Tehran, Iran, Tel: +98-21-23064226, Fax: +98-21-22889403, 2Medical Biology Received: 07 February 2019 Research Center, Kermanshah University of Medical Sciences, Accepted: 29 March 2019 Kermanshah, Iran and 3Organisch-Chemisches Institut der Published: 11 April 2019 Universitaet Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany Associate Editor: T. J. J. Müller Email: © 2019 Navari et al.; licensee Beilstein-Institut. Saeed Balalaie* - [email protected] License and terms: see end of document. * Corresponding author Keywords: chromane; domino reaction; fused heterocyclic skeletons; pyrazolopyridines Abstract An efficient approach for the synthesis of pyrazolopyridines containing the aminochromane motif through a base-catalyzed cycliza- tion reaction is reported. The synthesis was carried out through a three-component reaction of (arylhydrazono)methyl-4H-chromen- 4-one, malononitrile, primary amines in the presence of Et3N at room temperature. However, carrying out the reaction under the same conditions without base led to a fused chromanyl-cyanopyridine. High selectivity, high atom economy, and good to high yields in addition to mild reaction conditions are the advantages of this approach. Introduction The synthesis of new fused heterocyclic backbones has always Chromone derivatives have been found to exhibit a broad range been a major challenge in the field of organic synthesis [1-3]. -
Crystal Structure Analysis of Ethyl 6-(4-Methoxyphenyl)-1-Methyl-4-Methyl- Sulfanyl-3-Phenyl-1H-Pyrazolo[3,4-B]Pyridine-5-Carboxylate
research communications Crystal structure analysis of ethyl 6-(4-methoxy- phenyl)-1-methyl-4-methylsulfanyl-3-phenyl-1H- pyrazolo[3,4-b]pyridine-5-carboxylate ISSN 2056-9890 H. Surya Prakash Rao,a,b* Ramalingam Gunasundarib and Jayaraman Muthukumaranc‡ Received 4 June 2020 aDepartment of Chemistry and Biochemistry, School of Basic Sciences and Research, Sharda University, Greater Noida Accepted 30 June 2020 201306, India, bDepartment of Chemistry, Pondicherry University, Puducherry 605 014, India, and cDepartment of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida 201306, India. *Correspon- dence e-mail: [email protected] Edited by D. Chopra, Indian Institute of Science Education and Research Bhopal, India In the title compound, C24H23N3O3S, the dihedral angle between the fused ‡ Additional correspondence author, e-mail: pyrazole and pyridine rings is 1.76 (7) . The benzene and methoxy phenyl rings [email protected]. make dihedral angles of 44.8 (5) and 63.86 (5) , respectively, with the pyrazolo[3,4-b] pyridine moiety. An intramolecular short SÁÁÁO contact Keywords: crystal structure; pyrazolopyridine; [3.215 (2) A˚ ] is observed. The crystal packing features C—HÁÁÁ interactions. pyrazolo[3,4-b]pyridine; C—HÁÁÁ interactions. CCDC reference: 2005976 Supporting information: this article has 1. Chemical context supporting information at journals.iucr.org/e Pyrazolopyridines, in which a group of three nitrogen atoms is incorporated into a bicyclic heterocycle, are privileged medicinal scaffolds, often utilized in drug design and discovery regimes (Kumar et al., 2019). Owing to the possibilities of the easy synthesis of a literally unlimited number of a combina- torial library of small organic molecules with a pyrazolo- pyridine scaffold, there has been enormous interest in these molecules among medicinal chemists (Kumar et al. -
Identification of Compounds That Rescue Otic and Myelination
RESEARCH ARTICLE Identification of compounds that rescue otic and myelination defects in the zebrafish adgrg6 (gpr126) mutant Elvira Diamantopoulou1†, Sarah Baxendale1†, Antonio de la Vega de Leo´ n2, Anzar Asad1, Celia J Holdsworth1, Leila Abbas1, Valerie J Gillet2, Giselle R Wiggin3, Tanya T Whitfield1* 1Bateson Centre and Department of Biomedical Science, University of Sheffield, Sheffield, United Kingdom; 2Information School, University of Sheffield, Sheffield, United Kingdom; 3Sosei Heptares, Cambridge, United Kingdom Abstract Adgrg6 (Gpr126) is an adhesion class G protein-coupled receptor with a conserved role in myelination of the peripheral nervous system. In the zebrafish, mutation of adgrg6 also results in defects in the inner ear: otic tissue fails to down-regulate versican gene expression and morphogenesis is disrupted. We have designed a whole-animal screen that tests for rescue of both up- and down-regulated gene expression in mutant embryos, together with analysis of weak and strong alleles. From a screen of 3120 structurally diverse compounds, we have identified 68 that reduce versican b expression in the adgrg6 mutant ear, 41 of which also restore myelin basic protein gene expression in Schwann cells of mutant embryos. Nineteen compounds unable to rescue a strong adgrg6 allele provide candidates for molecules that may interact directly with the Adgrg6 receptor. Our pipeline provides a powerful approach for identifying compounds that modulate GPCR activity, with potential impact for future drug design. DOI: https://doi.org/10.7554/eLife.44889.001 *For correspondence: [email protected] †These authors contributed Introduction equally to this work Adgrg6 (Gpr126) is an adhesion (B2) class G protein-coupled receptor (aGPCR) with conserved roles in myelination of the vertebrate peripheral nervous system (PNS) (reviewed in Langenhan et al., Competing interest: See 2016; Patra et al., 2014). -
Molecular Mechanisms Driving Prostate Cancer Neuroendocrine Differentiation
Molecular mechanisms driving prostate cancer neuroendocrine differentiation Submitted by Joseph Edward Sutton Supervisory team: Dr Amy Poole (DoS) Dr Jennifer Fraser Dr Gary Hutchison A thesis submitted in partial fulfilment of the requirements of Edinburgh Napier University, for the award of Doctor of Philosophy. October 2019 School of Applied Sciences Edinburgh Napier University Edinburgh Declaration It is hereby declared that this thesis is the result of the author’s original research. It has been composed by the author and has not been previously submitted for examination which has led to the award of a degree. Signed: II Dedication This thesis is dedicated to my grandfather William ‘Harry’ Russell, who died of stomach cancer in 2014. Thank you for always encouraging me to achieve my ambitions, believing in me and for retaining your incredible positivity and sense of humour, even at the very end of your life. III Acknowledgements First of all, I would like to acknowledge my parents, who dedicated so much effort and energy into helping me to achieve my lifelong ambition of becoming a scientist. From taking me to the Natural History and Science Museums in London as a child, to tolerating my obsession with Jurassic Park and continuing to support me in both of your unique yet equally important ways, thank you. I would also like to thank my PhD supervisors Dr Amy Poole and Dr Jenny Fraser, not only for their excellent scientific guidance but also for their great banter and encouragement along the way. Thank you for seeing some potential in me, taking a chance on me and for helping me to continue my scientific journey. -
WO 2015/072852 Al 21 May 2015 (21.05.2015) P O P C T
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2015/072852 Al 21 May 2015 (21.05.2015) P O P C T (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every A61K 36/84 (2006.01) A61K 31/5513 (2006.01) kind of national protection available): AE, AG, AL, AM, A61K 31/045 (2006.01) A61P 31/22 (2006.01) AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, A61K 31/522 (2006.01) A61K 45/06 (2006.01) BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, (21) International Application Number: HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, PCT/NL20 14/050780 KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, (22) International Filing Date: MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, 13 November 2014 (13.1 1.2014) PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, (25) Filing Language: English TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (26) Publication Language: English (84) Designated States (unless otherwise indicated, for every (30) Priority Data: kind of regional protection available): ARIPO (BW, GH, 61/903,430 13 November 2013 (13. 11.2013) US GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, (71) Applicant: RJG DEVELOPMENTS B.V. -
(12) Patent Application Publication (10) Pub. No.: US 2006/0024365A1 Vaya Et Al
US 2006.0024.365A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2006/0024365A1 Vaya et al. (43) Pub. Date: Feb. 2, 2006 (54) NOVEL DOSAGE FORM (30) Foreign Application Priority Data (76) Inventors: Navin Vaya, Gujarat (IN); Rajesh Aug. 5, 2002 (IN)................................. 699/MUM/2002 Singh Karan, Gujarat (IN); Sunil Aug. 5, 2002 (IN). ... 697/MUM/2002 Sadanand, Gujarat (IN); Vinod Kumar Jan. 22, 2003 (IN)................................... 80/MUM/2003 Gupta, Gujarat (IN) Jan. 22, 2003 (IN)................................... 82/MUM/2003 Correspondence Address: Publication Classification HEDMAN & COSTIGAN P.C. (51) Int. Cl. 1185 AVENUE OF THE AMERICAS A6IK 9/22 (2006.01) NEW YORK, NY 10036 (US) (52) U.S. Cl. .............................................................. 424/468 (22) Filed: May 19, 2005 A dosage form comprising of a high dose, high Solubility active ingredient as modified release and a low dose active ingredient as immediate release where the weight ratio of Related U.S. Application Data immediate release active ingredient and modified release active ingredient is from 1:10 to 1:15000 and the weight of (63) Continuation-in-part of application No. 10/630,446, modified release active ingredient per unit is from 500 mg to filed on Jul. 29, 2003. 1500 mg, a process for preparing the dosage form. Patent Application Publication Feb. 2, 2006 Sheet 1 of 10 US 2006/0024.365A1 FIGURE 1 FIGURE 2 FIGURE 3 Patent Application Publication Feb. 2, 2006 Sheet 2 of 10 US 2006/0024.365A1 FIGURE 4 (a) 7 FIGURE 4 (b) Patent Application Publication Feb. 2, 2006 Sheet 3 of 10 US 2006/0024.365 A1 FIGURE 5 100 ov -- 60 40 20 C 2 4. -
Ion Channels
UC Davis UC Davis Previously Published Works Title THE CONCISE GUIDE TO PHARMACOLOGY 2019/20: Ion channels. Permalink https://escholarship.org/uc/item/1442g5hg Journal British journal of pharmacology, 176 Suppl 1(S1) ISSN 0007-1188 Authors Alexander, Stephen PH Mathie, Alistair Peters, John A et al. Publication Date 2019-12-01 DOI 10.1111/bph.14749 License https://creativecommons.org/licenses/by/4.0/ 4.0 Peer reviewed eScholarship.org Powered by the California Digital Library University of California S.P.H. Alexander et al. The Concise Guide to PHARMACOLOGY 2019/20: Ion channels. British Journal of Pharmacology (2019) 176, S142–S228 THE CONCISE GUIDE TO PHARMACOLOGY 2019/20: Ion channels Stephen PH Alexander1 , Alistair Mathie2 ,JohnAPeters3 , Emma L Veale2 , Jörg Striessnig4 , Eamonn Kelly5, Jane F Armstrong6 , Elena Faccenda6 ,SimonDHarding6 ,AdamJPawson6 , Joanna L Sharman6 , Christopher Southan6 , Jamie A Davies6 and CGTP Collaborators 1School of Life Sciences, University of Nottingham Medical School, Nottingham, NG7 2UH, UK 2Medway School of Pharmacy, The Universities of Greenwich and Kent at Medway, Anson Building, Central Avenue, Chatham Maritime, Chatham, Kent, ME4 4TB, UK 3Neuroscience Division, Medical Education Institute, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD1 9SY, UK 4Pharmacology and Toxicology, Institute of Pharmacy, University of Innsbruck, A-6020 Innsbruck, Austria 5School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, BS8 1TD, UK 6Centre for Discovery Brain Science, University of Edinburgh, Edinburgh, EH8 9XD, UK Abstract The Concise Guide to PHARMACOLOGY 2019/20 is the fourth in this series of biennial publications. The Concise Guide provides concise overviews of the key properties of nearly 1800 human drug targets with an emphasis on selective pharmacology (where available), plus links to the open access knowledgebase source of drug targets and their ligands (www.guidetopharmacology.org), which provides more detailed views of target and ligand properties. -
Zebrafish Behavioural Profiling Identifies GABA and Serotonin
ARTICLE https://doi.org/10.1038/s41467-019-11936-w OPEN Zebrafish behavioural profiling identifies GABA and serotonin receptor ligands related to sedation and paradoxical excitation Matthew N. McCarroll1,11, Leo Gendelev1,11, Reid Kinser1, Jack Taylor 1, Giancarlo Bruni 2,3, Douglas Myers-Turnbull 1, Cole Helsell1, Amanda Carbajal4, Capria Rinaldi1, Hye Jin Kang5, Jung Ho Gong6, Jason K. Sello6, Susumu Tomita7, Randall T. Peterson2,10, Michael J. Keiser 1,8 & David Kokel1,9 1234567890():,; Anesthetics are generally associated with sedation, but some anesthetics can also increase brain and motor activity—a phenomenon known as paradoxical excitation. Previous studies have identified GABAA receptors as the primary targets of most anesthetic drugs, but how these compounds produce paradoxical excitation is poorly understood. To identify and understand such compounds, we applied a behavior-based drug profiling approach. Here, we show that a subset of central nervous system depressants cause paradoxical excitation in zebrafish. Using this behavior as a readout, we screened thousands of compounds and identified dozens of hits that caused paradoxical excitation. Many hit compounds modulated human GABAA receptors, while others appeared to modulate different neuronal targets, including the human serotonin-6 receptor. Ligands at these receptors generally decreased neuronal activity, but paradoxically increased activity in the caudal hindbrain. Together, these studies identify ligands, targets, and neurons affecting sedation and paradoxical excitation in vivo in zebrafish. 1 Institute for Neurodegenerative Diseases, University of California, San Francisco, CA 94143, USA. 2 Cardiovascular Research Center and Division of Cardiology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA. -
Design, Synthesis, and Evaluation of Novel Gram-Positive Antibiotics Part 2
University of Wisconsin Milwaukee UWM Digital Commons Theses and Dissertations 12-1-2016 Part 1: Design, Synthesis, and Evaluation of Novel Gram-positive Antibiotics Part 2: Synthesis of Dihydrobenzofurans Via a New Transition Metal Catalyzed Reaction Part 3: Design, Synthesis, and Evaluation of Bz/gabaa Α6 Positive Allosteric Modulators Christopher Michael Witzigmann University of Wisconsin-Milwaukee Follow this and additional works at: https://dc.uwm.edu/etd Part of the Organic Chemistry Commons Recommended Citation Witzigmann, Christopher Michael, "Part 1: Design, Synthesis, and Evaluation of Novel Gram-positive Antibiotics Part 2: Synthesis of Dihydrobenzofurans Via a New Transition Metal Catalyzed Reaction Part 3: Design, Synthesis, and Evaluation of Bz/gabaa Α6 Positive Allosteric Modulators" (2016). Theses and Dissertations. 1429. https://dc.uwm.edu/etd/1429 This Dissertation is brought to you for free and open access by UWM Digital Commons. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of UWM Digital Commons. For more information, please contact [email protected]. PART 1: DESIGN, SYNTHESIS, AND EVALUATION OF NOVEL GRAM-POSITIVE ANTIBIOTICS PART 2: SYNTHESIS OF DIHYDROBENZOFURANS VIA A NEW TRANSITION METAL CATALYZED REACTION PART 3: DESIGN, SYNTHESIS, AND EVALUATION OF BZ/GABAA α6 POSITIVE ALLOSTERIC MODULATORS by Christopher Michael Witzigmann A Dissertation Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Chemistry at The University of Wisconsin-Milwaukee December 2016 ABSTRACT PART 1: DESIGN, SYNTHESIS, AND EVALUATION OF NOVEL GRAM-POSITIVE ANTIBIOTICS PART 2: SYNTHESIS OF DIHYDROBENZOFURANS VIA A NEW TRANSITION METAL CATALYZED REACTION PART 3: DESIGN, SYNTHESIS, AND EVALUATION OF BZ/GABAA α6 POSITIVE ALLOSTERIC MODULATORS by Christopher Michael Witzigmann The University of Wisconsin-Milwaukee, 2016 Under the Supervision of Distinguished Professor James M. -
Identifying Drugs That Bind Selectively to Intersubunit General Anesthetic Sites in the Α1β3γ2 GABAAR Transmembrane Domain
1521-0111/95/6/615–628$35.00 https://doi.org/10.1124/mol.118.114975 MOLECULAR PHARMACOLOGY Mol Pharmacol 95:615–628, June 2019 Copyright ª 2019 by The American Society for Pharmacology and Experimental Therapeutics Identifying Drugs that Bind Selectively to Intersubunit General Anesthetic Sites in the a1b3g2 GABAAR Transmembrane Domain Selwyn S. Jayakar, Xiaojuan Zhou, David C. Chiara, Carlos Jarava-Barrera, Pavel Y. Savechenkov, Karol S. Bruzik, Mariola Tortosa, Keith W. Miller, and Jonathan B. Cohen Department of Neurobiology, Harvard Medical School, Boston, Massachusetts (S.S.J., D.C.C., J.B.C.); Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, Massachusetts (X.Z., K.W.M.); Downloaded from Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, Chicago, Illinois (P.Y.S., K.S.B.); and the Departamento de Quimica Orgánica, Universidad Autónoma de Madrid, Madrid, Spain (C.J.-B., M.T.) Received October 19, 2018; accepted March 29, 2019 ABSTRACT molpharm.aspetjournals.org GABAA receptors (GABAARs) are targets for important classes [4-(tert-butyl)-propofol and 4-(hydroxyl(phenyl)methyl)-propofol] of clinical agents (e.g., anxiolytics, anticonvulsants, and gen- bind with ∼10-fold higher affinity to b2 sites. Similar to R-mTFD- eral anesthetics) that act as positive allosteric modulators MPAB and propofol, these drugs bind in the presence of GABA (PAMs). Previously, using photoreactive analogs of etomidate with similar affinity to the a1–b2 and g1–b2 sites. However, we ([3H]azietomidate) and mephobarbital [[3H]1-methyl-5-allyl-5-(m- discovered four compounds that bind with different affinities to trifluoromethyl-diazirynylphenyl)barbituric acid ([3H]R-mTFD-MPAB)], the two b2 interface sites. -
FAST, SOLVENT-FREE, and HIGHLY EFFICIENT SYNTHESIS of PYRAZOLO[3,4-B]PYRIDINES USING MICROWAVE IRRADIATION
HETEROCYCLES, Vol. 98, No. 10, 2019, pp. 1408 - 1422. © 2019 The Japan Institute of Heterocyclic Chemistry Received, 17th September, 2019, Accepted, 21st October, 2019, Published online, 1st November, 2019 DOI: 10.3987/COM-19-14158 FAST, SOLVENT-FREE, AND HIGHLY EFFICIENT SYNTHESIS OF PYRAZOLO[3,4-b]PYRIDINES USING MICROWAVE IRRADIATION AND KHSO4 AS A REUSABLE GREEN CATALYST Jinjing Qin, Zhenhua Li,* Xiaomeng Sun, Yi Jin, and Weike Su College of Pharmaceutical Sciences, Zhejiang University of Technology, 310014 Hangzhou, PR China; E-Mail: [email protected] Abstract – A simple, ecofriendly, and effective method was described for forming pyrazolo[3,4-b]pyridines from 5-aminopyrazoles and 3-formylchromones, in good to excellent yields, under microwave irradiation in solvent-free conditions using KHSO4 as a reusable catalyst. Some noteworthy features of this method were its cleanliness, short reaction time, easy work-up, and broad substrate tolerance. The catalyst was reused several times without losing activity. INTRODUCTION Over past decades, as an important subset of pyrazolopyridines, pyrazolo[3,4-b]pyridine has emerged as a multivalent scaffold that is used as a substructure for numerous pharmaceutically active compounds. Some important pyrazolo[3,4-b]pyridines have been described as anxiolytic drugs, including Etazolate and Tracazolate,1 a stimulator of soluble guanylate cyclase (sGC),2 inhibitor of glycogen synthase kinase-3 (GSK-3),3 inhibitor of a cyclin dependent kinase 1 (CDK1),4 an anticancer agent,5 and an antiviral (Figure 1).6 It is for these pharmacological properties, coupled with the pharmaceutical and fine chemical industries’ interest in synthetic processes, that greener and more efficient technology is sought for their syntheses. -
Pharmaceutical
Europaisches Patentamt o : European Patent Office 00 Publication number: A2 Office europeen des brevets EUROPEAN PATENT APPLICATION © Application number: 89300865.6 ©int.ci*A61K 31/50 (§) Date of filing: 30.01.89 <§) Priority: 09.02.88 US 153864 © Applicant: ICI AMERICAS INC. Concord Pike & New Murphy Road © Date of publication of application: Wilmington Delaware 19897(US) 16.08.89 Bulletin 89/33 @ Inventor: Resch, James Franklin @ Designated Contracting States: 208 Jaymar Boulevard AT BE CH DE ES FR GB GR IT LI LU NL SE Newark, DE 19702(US) © Representative: Smith, Stephen Collyer et al Imperial Chemical Industries PLC Legal Department: Patents Po Box 6 Bessemer Road Welwyn Garden City Herts, AL7 1HD(GB) © Pharmaceutical. © The invention relates to a method of using a compound of formula la V* .9 *-\^* la to antagonize the effects of benzodiazepine receptor agonists. 00 M 00 CM CO a. LU Xerox Copy Centre EP 0 328 282 A2 PHARMACEUTICAL BACKGROUND AND SUMMARY OF THE INVENTION The present invention comprises a method of using 4-amino-8-phenyl-N-propyl-3-cinnolinecarboxamide 5 to bind to benzodiazepine receptors, which method may be useful in the antagonism of certain pharmaco- logical effects of benzodiazepine agonists. This method may also be useful as a biochemical tool in characterizing the action of other chemical compounds. It is well know that compounds which are agonists at benzodiazepine receptors have utility as antianxiety agents and have sedative, muscle relaxant and anticonvulsant properties, as well. Such agents 10 include, for example, chlordiazepoxide, diazepam, lorazepam, prazepam, halazepam, oxazepam, chlorazapate, alprazolam, flurazepam, triazolam, temazepam and the like.