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Mushtaque M, Avecilla F, Alsukaibi AKD, Pingale SS, Kamble KM, Rizvi MMA. Molecular structure and biological activities of 4-thiazolidinone derivatives: a combined theoretical and experimental study. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2022.2134371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Md. Mushtaque
- Department of Chemistry, Samastipur College, Lalit Narayan Mithila University, Darbhanga, Bihar, India
| | - Fernando Avecilla
- Grupo NanoToxGen, Centro de Investigacións Científicas, Avanzadas (CICA), Departamento de Química, Facultade de Ciencias, Universidade da Coruña, Coruña, Spain
| | | | - Subash S. Pingale
- Department of Chemistry, Savitribai Phule Pune University, Pune, India
| | - Kirtee M. Kamble
- Department of Chemistry, Savitribai Phule Pune University, Pune, India
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2
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Synthesis of 2-iminothiazolidin-4-ones using guanine functionalized SBA-16 as a solid base catalyst. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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3
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Kaminskyy D, Kryshchyshyn A, Lesyk R. 5-Ene-4-thiazolidinones - An efficient tool in medicinal chemistry. Eur J Med Chem 2017; 140:542-594. [PMID: 28987611 PMCID: PMC7111298 DOI: 10.1016/j.ejmech.2017.09.031] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 07/14/2017] [Accepted: 09/17/2017] [Indexed: 02/02/2023]
Abstract
The presented review is an attempt to summarize a huge volume of data on 5-ene-4-thiazolidinones being a widely studied class of small molecules used in modern organic and medicinal chemistry. The manuscript covers approaches to the synthesis of 5-ene-4-thiazolidinone derivatives: modification of the C5 position of the basic core; synthesis of the target compounds in the one-pot or multistage reactions or transformation of other related heterocycles. The most prominent pharmacological profiles of 5-ene derivatives of different 4-thiazolidinone subtypes belonging to hit-, lead-compounds, drug-candidates and drugs as well as the most studied targets have been discussed. Currently target compounds (especially 5-en-rhodanines) are assigned as frequent hitters or pan-assay interference compounds (PAINS) within high-throughput screening campaigns. Nevertheless, the crucial impact of the presence/nature of C5 substituent (namely 5-ene) on the pharmacological effects of 5-ene-4-thiazolidinones was confirmed by the numerous listed findings from the original articles. The main directions for active 5-ene-4-thiazolidinones optimization have been shown: i) complication of the fragment in the C5 position; ii) introduction of the substituents in the N3 position (especially fragments with carboxylic group or its derivatives); iii) annealing in complex heterocyclic systems; iv) combination with other pharmacologically attractive fragments within hybrid pharmacophore approach. Moreover, the utilization of 5-ene-4-thiazolidinones in the synthesis of complex compounds with potent pharmacological application is described. The chemical transformations cover mainly the reactions which involve the exocyclic double bond in C5 position of the main core and correspond to the abovementioned direction of the 5-ene-4-thiazolidinone modification.
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Affiliation(s)
- Danylo Kaminskyy
- Department of Pharmaceutical, Organic and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, Pekarska 69, Lviv-10, 79010, Ukraine
| | - Anna Kryshchyshyn
- Department of Pharmaceutical, Organic and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, Pekarska 69, Lviv-10, 79010, Ukraine
| | - Roman Lesyk
- Department of Pharmaceutical, Organic and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, Pekarska 69, Lviv-10, 79010, Ukraine.
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Mushtaque M, Avecilla F, Pingale SS, Kamble KM, Yab Z, Rizvi MMA. Computational and experimental studies of 4-thiazolidinone-cyclopropyl hybrid. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.06.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lozynskyi A, Zasidko V, Atamanyuk D, Kaminskyy D, Derkach H, Karpenko O, Ogurtsov V, Kutsyk R, Lesyk R. Synthesis, antioxidant and antimicrobial activities of novel thiopyrano[2,3-d]thiazoles based on aroylacrylic acids. Mol Divers 2017; 21:427-436. [PMID: 28424934 DOI: 10.1007/s11030-017-9737-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 04/04/2017] [Indexed: 10/19/2022]
Abstract
Here it is described the synthesis, antioxidant and antimicrobial activity determination of novel rel-([Formula: see text])-6-benzoyl-7-phenyl-2-oxo-3,5,6,7-tetrahydro-2H-thiopyrano[2,3-d]thiazole-5-carboxylic acids. The target compounds were obtained in good yields from 5-arylidene-4-thioxo-2-thiazolidinones and [Formula: see text]-aroylacrylic acids via regio- and diastereoselective hetero-Diels-Alder reaction. The stereochemistry of the cycloaddition was confirmed by NMR spectra. The antioxidant and antimicrobial activity screening identified 7 compounds (3c, 3e, 3f, 3g, 3k, 3l, 3p) with a high level of free radical scavenging (43-77% DPPH assay), and compounds with significant influence on Staphylococcus aureus, Bacillus subtilis and Candida albicans (MIC 3.13-6.25 [Formula: see text]), but slight effect on Escherichia coli.
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Affiliation(s)
- Andrii Lozynskyi
- Department of Pharmaceutical, Organic and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, 69 Pekarska, Lviv, 79010, Ukraine
| | - Viktoria Zasidko
- Department of Microbiology, Virology and Immunology, Ivano-Frankivsk National Medical University, 2 Halytska, Ivano-Frankivsk, 76018, Ukraine
| | - Dmytro Atamanyuk
- Department of Pharmaceutical, Organic and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, 69 Pekarska, Lviv, 79010, Ukraine
| | - Danylo Kaminskyy
- Department of Pharmaceutical, Organic and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, 69 Pekarska, Lviv, 79010, Ukraine
| | - Halyna Derkach
- Department of Chemistry, Ivano-Frankivsk National Medical University, 2 Halytska, Ivano-Frankivsk, 76018, Ukraine
| | | | - Volodymyr Ogurtsov
- Department of General, Bioinorganic, Physical and Colloidal Chemistry, Danylo Halytsky Lviv National Medical University, 69 Pekarska, Lviv, 79010, Ukraine
| | - Roman Kutsyk
- Department of Microbiology, Virology and Immunology, Ivano-Frankivsk National Medical University, 2 Halytska, Ivano-Frankivsk, 76018, Ukraine
| | - Roman Lesyk
- Department of Pharmaceutical, Organic and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, 69 Pekarska, Lviv, 79010, Ukraine.
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El Ajlaoui R, Rakib EM, Mojahidi S, Saadi M, El Ammari L. Crystal structure of (E)-3-allyl-2-sulfanyl-idene-5-[(thio-phen-2-yl)methyl-idene]thia-zolidin-4-one. ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS 2015; 71:o433-4. [PMID: 26090212 PMCID: PMC4459307 DOI: 10.1107/s2056989015010166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 05/26/2015] [Indexed: 05/28/2023]
Abstract
Molecules of the title compound, C11H9NOS3, are built up by one thiophene and one 2-thioxathiazolidin-4-one ring which are connected by a methylene bridge. In addition, there is an allyl substituent attached to nitrogen. The two rings are almost coplanar, making a dihedral angle between them of 0.76 (11)°. The allyl group is oriented perpendicular to the mean plane through both ring systems. The crystal structure exhibits inversion dimers in which molecules are linked by pairs of C—H⋯O hydrogen bonds. Additional π–π interactions between neighboring thiophene and 2-thioxathiazolidin-4-one rings [intercentroid distance = 3.694 (2) Å] lead to the formation of a three-dimensional network.
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Affiliation(s)
- Rahhal El Ajlaoui
- Laboratoire de Chimie Organique et Analytique, Université Sultan Moulay Slimane, Faculté des Sciences et Techniques, Béni-Mellal, BP 523, Morocco
| | - El Mostapha Rakib
- Laboratoire de Chimie Organique et Analytique, Université Sultan Moulay Slimane, Faculté des Sciences et Techniques, Béni-Mellal, BP 523, Morocco
| | - Souad Mojahidi
- Laboratoire de Chimie Organique et Analytique, Université Sultan Moulay Slimane, Faculté des Sciences et Techniques, Béni-Mellal, BP 523, Morocco
| | - Mohamed Saadi
- Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V, Avenue Ibn Battouta, BP. 1014, Rabat, Morocco
| | - Lahcen El Ammari
- Laboratoire de Chimie du Solide Appliquée, Faculté des Sciences, Université Mohammed V, Avenue Ibn Battouta, BP. 1014, Rabat, Morocco
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Kosurkar UB, Dadmal TL, Kumbhare RM, Sridhar B. An Environmentally Benign Water Promoted Catalyst Free Highly Efficient, One-pot Synthesis of 2-Imino-4-thiazolidinone. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1812] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Umesh B. Kosurkar
- Fluoroorganic Division; Indian Institute of Chemical Technology, CSIR; Hyderabad 500 607 India
| | - Tulshiram L. Dadmal
- Fluoroorganic Division; Indian Institute of Chemical Technology, CSIR; Hyderabad 500 607 India
| | - Ravindra M. Kumbhare
- Fluoroorganic Division; Indian Institute of Chemical Technology, CSIR; Hyderabad 500 607 India
| | - Balasubramanian Sridhar
- Laboratory of X-ray Crystallography; Indian Institute of Chemical Technology, CSIR; Hyderabad 500 607 India
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Hanusek J, Kammel R. Ring Transformation of the S-(2-Oxo-2,3-dihydro-1-benzofuran-3-yl)isothiuronium Bromides to 5-(2-Hydroxyphenyl)-2-imino-1,3-thiazolidin-4-ones. HETEROCYCLES 2014. [DOI: 10.3987/com-14-12967] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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A new application of rhodanine as a green sulfur transferring agent for a clean functional group interconversion of amide to thioamide using reusable MCM-41 mesoporous silica. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.02.045] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Coulibaly WK, Paquin L, Bénié A, Bekro YA, Durieux E, Meijer L, Le Guével R, Corlu A, Bazureau JP. Synthesis of New N,N'-Bis(5-arylidene-4-oxo-4,5-dihydrothiazolin-2-yl)piperazine Derivatives Under Microwave Irradiation and Preliminary Biological Evaluation. Sci Pharm 2012; 80:825-36. [PMID: 23264934 PMCID: PMC3528043 DOI: 10.3797/scipharm.1206-04] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Accepted: 09/16/2012] [Indexed: 12/02/2022] Open
Abstract
New N,N’-bis(5-arylidene-4-oxo-4,5-dihydrothiazoline-2-yl)diamine derivatives 5 were prepared in two steps from rhodanine and piperazine, or 1,4-bis(3-amino-propyl)piperazine, under microwave reaction conditions with retention of configuration. Some of these compounds were tested for in vitro antiproliferative activities and for their kinase inhibitory potencies towards six kinases (CDK5/p25, GSK3α/β, DYRK1A, DYRK2, CLK1, and CLK2). The compound 5d showed nanomolar activity towards DYRK1A kinase (IC50 = 0.041 μM).
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Affiliation(s)
- Wacothon Karime Coulibaly
- Université de Rennes 1, Institut des Sciences Chimiques de Rennes (ISCR), UMR CNRS 6226, groupe Ingénièrie Chimique et Molécules pour le Vivant (ICMV), Bât. 10A, campus de Beaulieu, Avenue du Général Leclerc, CS 74205, 35042 Rennes Cedex, France. ; Université d'Abobo-Adjamé, Laboratoire de Chimie Bioorganique et de Subtances Naturelles (LCBSN), BP 802, Abidjan 02, République de la Côte d'Ivoire
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11
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Mushtaque M, Avecilla F, Azam A. Synthesis, characterization and structure optimization of a series of thiazolidinone derivatives as Entamoeba histolytica inhibitors. Eur J Med Chem 2012; 55:439-48. [DOI: 10.1016/j.ejmech.2012.06.052] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Revised: 06/23/2012] [Accepted: 06/27/2012] [Indexed: 12/24/2022]
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12
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Hamama WS, Ismail MA, Soliman MS, Shaaban S, Zoorob HH. Synthesis and CharacterizationviaMolecular Quantum Parameters of 2H-Thiazolo[3,2-a]pyrimidine-3,5,7(6H)-trione. J Heterocycl Chem 2012. [DOI: 10.1002/jhet.746] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wafaa S. Hamama
- Chemistry Department, Faculty of Science; Mansoura University; Egypt
| | - Mohamed A. Ismail
- Chemistry Department, Faculty of Science; Mansoura University; Egypt
| | | | - Saad Shaaban
- Chemistry Department, Faculty of Science; Mansoura University; Egypt
| | - Hanafi H. Zoorob
- Chemistry Department, Faculty of Science; Mansoura University; Egypt
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Mukhopadhyay C, Ray S. Synthesis of 2-amino-5-alkylidenethiazol-4-ones from ketones, rhodanine, and amines with the aid of re-usable heterogeneous silica-pyridine based catalyst. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.08.032] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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14
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Hamama WS, Ismail MA, Soliman M, Shaaban S, Zoorob HH. Behavior of 2-iminothiazolidin-4-one with different reagents. J Heterocycl Chem 2011. [DOI: 10.1002/jhet.628] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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15
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Insuasty B, Insuasty A, Tigreros A, Quiroga J, Abonia R, Nogueras M, Cobo J, Derita M, Zacchino S. Synthesis and antifungal evaluation of novel dicyanoderivatives of rhodanine. J Heterocycl Chem 2010. [DOI: 10.1002/jhet.565] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Insuasty B, Gutiérrez A, Quiroga J, Abonia R, Nogueras M, Cobo J, Svetaz L, Raimondi M, Zacchino S. Fungicide activity of 5-(4-chlorobenzylidene)-(Z)-2-dimethylamino-1,3-thiazol-4-one against Cryptococcus neoformans. Arch Pharm (Weinheim) 2010; 343:48-53. [PMID: 19927310 DOI: 10.1002/ardp.200900187] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The present work describes the synthesis and antifungal evaluation of new 5-arylidene-(Z)-2-dimethylamino-1,3-thiazol-4-ones 4a-f, obtained by the reaction of aromatic aldehydes 1 and rhodanine 2 followed by treatment with DMF. All compounds were tested against a panel of yeasts, hialohyphomycetes, and dermatophytes using the microbroth dilution method. Compounds 4a and 4c showed antifungal activity, with compound 4a being the most active one. Compound 4a demonstrated to be fungicidal rather than fungistatic and selective activity against Cryptococcus neoformans and dermatophytes. MIC(100), MIC(80), and MIC(50) of 4a were determined against a panel of clinical isolates of C. neoformans showing ranges of MICs between 2 and 16 microg/mL.
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Affiliation(s)
- Braulio Insuasty
- Department of Biology and Chemistry, Universidad Tecnológica del Chocó, Quibdó, Colombia.
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Prusakiewicz JJ, Duggan KC, Rouzer CA, Marnett LJ. Differential sensitivity and mechanism of inhibition of COX-2 oxygenation of arachidonic acid and 2-arachidonoylglycerol by ibuprofen and mefenamic acid. Biochemistry 2009; 48:7353-5. [PMID: 19603831 PMCID: PMC2720641 DOI: 10.1021/bi900999z] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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Ibuprofen and mefenamic acid are weak, competitive inhibitors of cyclooxygenase-2 (COX-2) oxygenation of arachidonic acid (AA) but potent, noncompetitive inhibitors of 2-arachidonoylglycerol (2-AG) oxygenation. The slow, tight-binding inhibitor, indomethacin, is a potent inhibitor of 2-AG and AA oxygenation whereas the rapidly reversible inhibitor, 2′-des-methylindomethacin, is a potent inhibitor of 2-AG oxygenation but a poor inhibitor of AA oxygenation. These observations are consistent with a model in which inhibitors bind in one subunit of COX-2 and inhibit 2-AG binding in the other subunit of the homodimeric protein. In contrast, ibuprofen and mefenamate must bind in both subunits to inhibit AA binding.
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Affiliation(s)
- Jeffery J Prusakiewicz
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-0146, USA
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Váňa J, Hanusek J, Růžička A, Sedlák M. Efficient synthesis of 5-(2-hydroxyethyl)-2-phenylimino- 1,3-thiazolidin-4-ones and 5-(2-hydroxyethyl)-2-phenylamino-4,5-dihydro-1,3-thiazol-4-ones. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.118] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Rand Doyen J, Yucer N, Lichtenberger LM, Kulmacz RJ. Phospholipid actions on PGHS-1 and -2 cyclooxygenase kinetics. Prostaglandins Other Lipid Mediat 2007; 85:134-43. [PMID: 18201917 DOI: 10.1016/j.prostaglandins.2007.12.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2007] [Revised: 11/10/2007] [Accepted: 12/03/2007] [Indexed: 10/22/2022]
Abstract
Cyclooxygenase (COX) catalysis by prostaglandin H synthase (PGHS) is a key control step for regulation of prostanoid biosynthesis. Both PGHS isoforms are integral membrane proteins and their substrate fatty acids readily partition into membranes, but the impact of phospholipids and lipid membranes on COX catalysis and the actions of COX inhibitors are not well understood. We have characterized the COX kinetics and ibuprofen inhibition of the purified PGHS isoforms in the presence of phosphatidylcholine (PC) with varying acyl chain structure and physical state. PC was found to directly inhibit COX activity, with non-competitive inhibition by PC monomers binding away from the COX active site and competitive inhibition by micellar/bilayer forms of PC due to sequestration of the arachidonate substrate. Competitive inhibition by native membranes was observed in a comparison of COX kinetics in sheep seminal vesicle microsomes before and after solubilization of PGHS-1. PC liposomes significantly increase the inhibitory potency of ibuprofen against both PGHS isoforms without changing the reversible character of ibuprofen action or requiring binding of PGHS to the liposomes. These results suggest a useful conceptual framework for analyzing the complex interactions among the PGHS proteins, substrates, inhibitors and phospholipid.
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Affiliation(s)
- J Rand Doyen
- Department of Integrative Biology & Pharmacology, University of Texas Health Science Center at Houston, Houston, TX 77030, United States
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A practical access to novel 2-amino-5-arylidene-1,3-thiazol-4(5H)-ones via sulfur/nitrogen displacement under solvent-free microwave irradiation. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.06.078] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Moghaddam FM, Hojabri L. A novel synthesis of some 2-imino-4-thiazolidinone derivatives. J Heterocycl Chem 2007. [DOI: 10.1002/jhet.5570440106] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Ehmann DE, Demeritt JE, Hull KG, Fisher SL. Biochemical characterization of an inhibitor of Escherichia coli UDP-N-acetylmuramyl-l-alanine ligase. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2004; 1698:167-74. [PMID: 15134649 DOI: 10.1016/j.bbapap.2003.11.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2003] [Accepted: 11/07/2003] [Indexed: 11/24/2022]
Abstract
UDP-N-acetylmuramyl-l-alanine ligase (MurC) is an essential bacterial enzyme involved in peptidoglycan biosynthesis and a target for the discovery of novel antibacterial agents. As a result of a high-throughput screen (HTS) against a chemical library for inhibitors of MurC, a series of benzofuran acyl-sulfonamides was identified as potential leads. One of these compounds, Compound A, inhibited Escherichia coli MurC with an IC(50) of 2.3 microM. Compound A exhibited time-dependent, partially reversible inhibition of E. coli MurC. Kinetic studies revealed a mode of inhibition consistent with the compound acting competitively with the MurC substrates ATP and UDP-N-acetyl-muramic acid (UNAM) with a K(i) of 4.5 microM against ATP and 6.3 microM against UNAM. Fluorescence binding experiments yielded a K(d) of 3.1 microM for the compound binding to MurC. Compound A also exhibited high-affinity binding to bovine serum albumin (BSA) as evidenced by a severe reduction in MurC inhibition upon addition of BSA. This finding is consistent with the high lipophilicity of the compound. Advancement of this compound series for further drug development will require reduction of albumin binding.
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Affiliation(s)
- David E Ehmann
- Department of Biochemistry, Infection Discovery, Cancer and Infection Research Area, AstraZeneca R&D Boston, 35 Gatehouse Drive, Waltham, MA 02451, USA.
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Blanchet J, Zhu J. Reeve's synthesis of 2-imino-4-thiazolidinone from alkyl (aryl) trichloromethylcarbinol revisited, a three-component process from aldehyde, chloroform and thiourea. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.04.055] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ouellet M, Falgueyret JP, Percival MD. Detergents profoundly affect inhibitor potencies against both cyclo-oxygenase isoforms. Biochem J 2004; 377:675-84. [PMID: 14510637 PMCID: PMC1223887 DOI: 10.1042/bj20030969] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2003] [Revised: 09/19/2003] [Accepted: 09/26/2003] [Indexed: 11/17/2022]
Abstract
The sensitivity of Coxs (cyclo-oxygenases) to inhibition is known to be highly dependent on assay conditions. In the present study, the inhibitor sensitivities of purified Cox-1 and -2 were determined in a colorimetric assay using the reducing agent N, N, N ', N '-tetramethyl- p -phenylenediamine. With the detergent genapol X-100 (2 mM) present, the potencies of nimesulide, ibuprofen, flufenamic acid, niflumic acid and naproxen were increased over 100-fold against Cox-2 and titration curve shapes changed, so that maximal inhibition now approached 100%. Indomethacin, diclofenac and flosulide were not changed in potency. Similar effects of genapol were observed with inhibitors of Cox-1. DuP-697 and two analogues became more than 10-fold less potent against Cox-2 with genapol present. Tween-20, Triton X-100 and phosphatidylcholine, but not octylglucoside, gave qualitatively similar effects as genapol. Similar detergent-dependent changes in inhibitor potency were also observed using a [(14)C]arachidonic acid HPLC assay. The increases in potency of ibuprofen, flufenamic acid, isoxicam and niflumic acid towards Cox-2 and ibuprofen towards Cox-1 were accompanied by a change from time-independent to time-dependent inhibition. The interactions of Cox inhibitors has been described in terms of multiple binding step mechanisms. The genapol-dependent increase in inhibitor potency for ketoprofen was associated with an increase in the rate constant for the conversion of the initial enzyme-inhibitor complex to a second, more tightly bound form. The loss of potency for some inhibitors is probably due to inhibitor partitioning into detergent micelles. The present study identifies detergents as another factor that must be considered when determining inhibitor potencies against both Cox isoforms.
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Affiliation(s)
- Marc Ouellet
- Department of Biochemistry and Molecular Biology, Merck Frosst Centre for Therapeutic Research, Pointe-Claire-Dorval, Quebec, Canada
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