1
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Krasnov VI, Os’kina IA, Tikhonov AY. Reaction of 5,5′-Diaryl-1,1′-dihydroxy-2,2′-biimidazoles with Trimethyl Phosphite. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2022. [DOI: 10.1134/s1070428022010092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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2
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Highly efficient and metal-free synthesis of tri- and tetrasubstituted imidazole catalyzed by 3-picolinic acid. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.10.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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3
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Perez C, Soler D, Soliva R, Guallar V. FragPELE: Dynamic Ligand Growing within a Binding Site. A Novel Tool for Hit-To-Lead Drug Design. J Chem Inf Model 2020; 60:1728-1736. [PMID: 32027130 DOI: 10.1021/acs.jcim.9b00938] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The early stages of drug discovery rely on hit-to-lead programs, where initial hits undergo partial optimization to improve binding affinities for their biological target. This is an expensive and time-consuming process, requiring multiple iterations of trial and error designs, an ideal scenario for applying computer simulation. However, most state-of-the-art modeling techniques fail to provide a fast and reliable answer to the Induced-Fit protein-ligand problem. To aid in this matter, we present FragPELE, a new tool for in silico hit-to-lead drug design, capable of growing a fragment from a bound core while exploring the protein-ligand conformational space. We tested the ability of FragPELE to predict crystallographic data, even in cases where cryptic sub-pockets open because of the presence of particular R-groups. Additionally, we evaluated the potential of the software on growing and scoring five congeneric series from the 2015 FEP+ dataset, comparing them to FEP+, SP and Induced-Fit Glide, and MMGBSA simulations. Results show that FragPELE could be useful not only for finding new cavities and novel binding modes in cases where standard docking tools cannot but also to rank ligand activities in a reasonable amount of time and with acceptable precision.
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Affiliation(s)
- Carles Perez
- Life Sciences Department, Barcelona Supercomputing Center (BSC), Barcelona 08034, Spain
| | - Daniel Soler
- Nostrum Biodiscovery, Carrer Jordi Girona 29, Nexus II D128, 08034 Barcelona, Spain
| | - Robert Soliva
- Nostrum Biodiscovery, Carrer Jordi Girona 29, Nexus II D128, 08034 Barcelona, Spain
| | - Victor Guallar
- Life Sciences Department, Barcelona Supercomputing Center (BSC), Barcelona 08034, Spain.,ICREA: Institució Catalana de Recerca i Estudis Avançats, Passeig Lluís Companys 23, 08010 Barcelona, Spain
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4
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de Toledo I, Grigolo TA, Bennett JM, Elkins JM, Pilli RA. Modular Synthesis of Di- and Trisubstituted Imidazoles from Ketones and Aldehydes: A Route to Kinase Inhibitors. J Org Chem 2019; 84:14187-14201. [PMID: 31460764 PMCID: PMC6829625 DOI: 10.1021/acs.joc.9b01844] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
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A one-pot and modular approach to
the synthesis of 2,4(5)-disubstituted
imidazoles was developed based on ketone oxidation, employing catalytic
HBr and DMSO, followed by imidazole condensation with aldehydes. This
methodology afforded twenty-nine disubstituted NH-imidazoles (23%–85% yield). A three-step synthesis of 20
kinase inhibitors was achieved by employing this oxidation–condensation
protocol, followed by bromination and Suzuki coupling in the imidazole
ring to yield trisubstituted NH-imidazoles (23%–69%,
three steps). This approach was also employed in the synthesis of
known inhibitor GSK3037619A.
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Affiliation(s)
- Ian de Toledo
- Department of Organic Chemistry, Institute of Chemistry , University of Campinas, UNICAMP , Campinas , São Paulo 13083-970 , Brazil
| | - Thiago A Grigolo
- Department of Organic Chemistry, Institute of Chemistry , University of Campinas, UNICAMP , Campinas , São Paulo 13083-970 , Brazil
| | - James M Bennett
- Structural Genomics Consortium, Nuffield Department of Medicine , University of Oxford , Old Road Campus Research Building, Roosevelt Drive , Oxford OX3 7DQ , United Kingdom
| | - Jonathan M Elkins
- Structural Genomics Consortium, Nuffield Department of Medicine , University of Oxford , Old Road Campus Research Building, Roosevelt Drive , Oxford OX3 7DQ , United Kingdom.,Structural Genomics Consortium, Departamento de Genética e Evolução , Instituto de Biologia, UNICAMP , Campinas , São Paulo 13083-886 , Brazil
| | - Ronaldo A Pilli
- Department of Organic Chemistry, Institute of Chemistry , University of Campinas, UNICAMP , Campinas , São Paulo 13083-970 , Brazil
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5
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Abdolmaleki A, Ghasemi JB. Inhibition activity prediction for a dataset of candidates' drug by combining fuzzy logic with MLR/ANN QSAR models. Chem Biol Drug Des 2019; 93:1139-1157. [PMID: 31343121 DOI: 10.1111/cbdd.13511] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 02/03/2019] [Accepted: 02/16/2019] [Indexed: 11/28/2022]
Abstract
A hybrid of artificial intelligence simple and low computational cost QSAR was used. Approximately 90 pyridinylimidazole-based drug candidates with a range of potencies against p38R MAP kinase were investigated. To obtain more flexibility and effective capability of handling and processing information about the real world, in this case, the fuzzy set theory was introduced into the QSAR. An integration of multiple linear regression and artificial neural network with adaptive neuro-fuzzy inference systems (ANFIS) was developed to predict the inhibition activity. The algorithm of ANFIS was applied to identify the suitable variables and then to find the optimal descriptors. The gradient descent with momentum backpropagation ANN was used to establish the nonlinear multivariate relationships between the chemical structural parameters and biological response. A comparison between the result of the proposed linear and nonlinear regression showed the superiority of QSAR modeling by ANFIS-ANN method over the MLR. The results demonstrated that the ANFIS could be applied successfully as a feature selection. The appearance of Diam, Homo, and LogP descriptors in the model showed the importance of the steric, electronic, and thermodynamic interactions between a drug and its target site in the distribution of a compound within a biosystem and its interaction with competing for binding sites.
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Affiliation(s)
- Azizeh Abdolmaleki
- Department of Chemistry, Tuyserkan Branch, Islamic Azad University, Tuyserkan, Iran
| | - Jahan B Ghasemi
- Drug Design in Silico Lab., Chemistry Faculty, University of Tehran, Tehran, Iran
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6
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Abstract
A modular and efficient synthesis of highly twisted N-acylimidazoles is reported. These twist amides were characterized via X-ray crystallography, NMR spectroscopy, IR spectroscopy, and DFT calculations. Modification of the substituent proximal to the amide revealed a maximum torsional angle of 88.6° in the solid state, which may be the most twisted amide reported for a nonbicyclic system to date. Reactivity and stability studies indicate that these twisted N-acylimidazoles may be valuable, namely as acyl transfer reagents.
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Affiliation(s)
- Elizabeth A. Stone
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Brandon Q. Mercado
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
| | - Scott J. Miller
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520-8107, United States
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7
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Rossi R, Angelici G, Casotti G, Manzini C, Lessi M. Catalytic Synthesis of 1,2,4,5‐Tetrasubstituted 1
H
‐Imidazole Derivatives: State of the Art. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801381] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Renzo Rossi
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Gaetano Angelici
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Gianluca Casotti
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Chiara Manzini
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Marco Lessi
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
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8
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Georgey HH, Manhi FM, Mahmoud WR, Mohamed NA, Berrino E, Supuran CT. 1,2,4-Trisubstituted imidazolinones with dual carbonic anhydrase and p38 mitogen-activated protein kinase inhibitory activity. Bioorg Chem 2018; 82:109-116. [PMID: 30312865 DOI: 10.1016/j.bioorg.2018.09.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 09/13/2018] [Accepted: 09/30/2018] [Indexed: 01/03/2023]
Abstract
Various 1,2,4 trisubstituted imidazolin-5-one derivatives were synthesized and evaluated for their inhibitory activity against p38 mitogen-activated protein kinase (p38MAPK) and carbonic anhydrase (CA) enzymes aiming to explore potential dual inhibitors. Results revealed that compounds 3c, 3g, 3h, 4a, 6c and 6d were the most effective derivatives against p38αMAPK (IC50 = 0.14, 0.14, 0.056, 0.14, 0.13 and 0.14 μM, respectively) compared to sorafenib (IC50 = 1.58 μM) as standard drug. On the other hand, compound 4a revealed the best inhibitory activity against all the tested carbonic anhydrase isoforms CA I, II, IV and IX with Ki values of 95.0, 0.83, 6.90 and 12.4 nM, respectively compared to acetazolamide with Ki values 250, 12.1, 74 and 12.8 nM, respectively. Therefore, compound 4a can be considered as a potent dual p38αMAPK/CA inhibitor.
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Affiliation(s)
- Hanan H Georgey
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, El-Kasr El-Eini Street, P.O. Box 11562, Cairo, Egypt
| | - Fatma M Manhi
- National Organization for Drug Control And Research (NODCAR), Giza, Egypt
| | - Walaa R Mahmoud
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, El-Kasr El-Eini Street, P.O. Box 11562, Cairo, Egypt.
| | - Nehad A Mohamed
- National Organization for Drug Control And Research (NODCAR), Giza, Egypt
| | - Emanuela Berrino
- Università degli Studi di Firenze, Department NEUROFARBA, Pharmaceutical and Nutraceutical Chemistry Section, University of Florence, via Ugo Schiff 6, I-50019 Sesto Fiorentino, Firenze, Italy
| | - Claudiu T Supuran
- Università degli Studi di Firenze, Department NEUROFARBA, Pharmaceutical and Nutraceutical Chemistry Section, University of Florence, via Ugo Schiff 6, I-50019 Sesto Fiorentino, Firenze, Italy
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9
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Nikolaenkova EB, Os’kina IA, Tikhonov AY. Synthesis of 2-(3,4,5-trimethoxybenzoyl)-4(5)-phenyl-1H-imidazole. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2018. [DOI: 10.1134/s1070428017120193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Khorasanizadeh M, Eskian M, Gelfand EW, Rezaei N. Mitogen-activated protein kinases as therapeutic targets for asthma. Pharmacol Ther 2017; 174:112-126. [DOI: 10.1016/j.pharmthera.2017.02.024] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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11
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Carlino L, Rastelli G. Dual Kinase-Bromodomain Inhibitors in Anticancer Drug Discovery: A Structural and Pharmacological Perspective. J Med Chem 2016; 59:9305-9320. [DOI: 10.1021/acs.jmedchem.6b00438] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Luca Carlino
- Department
of Life Sciences, University of Modena and Reggio Emilia, Modena 41125, Italy
| | - Giulio Rastelli
- Department
of Life Sciences, University of Modena and Reggio Emilia, Modena 41125, Italy
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12
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Khalafi-Nezhad A, Shekouhy M, Sharghi H, Aboonajmi J, Zare A. A new more atom-efficient multi-component approach to tetrasubstituted imidazoles: one-pot condensation of nitriles, amines and benzoin. RSC Adv 2016. [DOI: 10.1039/c6ra11171h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new more atom-efficient multi-component approach for the synthesis of tetrasubstituted imidazoles via the one-pot condensation of nitriles, primary amines and benzoin has been described.
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Affiliation(s)
- Ali Khalafi-Nezhad
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | - Mohsen Shekouhy
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | - Hashem Sharghi
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | - Jasem Aboonajmi
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
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13
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Boudreau MA, Fishovitz J, Llarrull LI, Xiao Q, Mobashery S. Phosphorylation of BlaR1 in Manifestation of Antibiotic Resistance in Methicillin-Resistant Staphylococcus aureus and Its Abrogation by Small Molecules. ACS Infect Dis 2015; 1:454-9. [PMID: 27623311 DOI: 10.1021/acsinfecdis.5b00086] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA), an important human pathogen, has evolved an inducible mechanism for resistance to β-lactam antibiotics. We report herein that the integral membrane protein BlaR1, the β-lactam sensor/signal transducer protein, is phosphorylated on exposure to β-lactam antibiotics. This event is critical to the onset of the induction of antibiotic resistance. Furthermore, we document that BlaR1 phosphorylation and the antibiotic-resistance phenotype are both reversed in the presence of synthetic protein kinase inhibitors of our design, restoring susceptibility of the organism to a penicillin, resurrecting it from obsolescence in treatment of these intransigent bacteria.
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Affiliation(s)
- Marc A. Boudreau
- Department of Chemistry and
Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jennifer Fishovitz
- Department of Chemistry and
Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Leticia I. Llarrull
- Department of Chemistry and
Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Qiaobin Xiao
- Department of Chemistry and
Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Shahriar Mobashery
- Department of Chemistry and
Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
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14
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Astolfi A, Iraci N, Manfroni G, Barreca ML, Cecchetti V. A Comprehensive Structural Overview of p38α MAPK in Complex with Type I Inhibitors. ChemMedChem 2015; 10:957-69. [PMID: 26012502 DOI: 10.1002/cmdc.201500030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 03/05/2015] [Indexed: 12/12/2022]
Abstract
p38α mitogen-activated protein kinase (MAPK) is a well-recognized therapeutic target for the treatment of autoimmune and inflammatory diseases. Over the past two decades, tremendous efforts have been focused on the discovery and development of small-molecule p38α MAPK inhibitors, although currently no drugs targeting this protein are clinically available. Therefore, the identification of novel chemotypes that are able to inhibit p38α MAPK function is still of great therapeutic significance. With the objective to support drug discovery programs aimed at identifying new immunomodulators acting on p38α MAPK, herein we present a complete overview of the available crystal structures of this protein in complex with ATP-site type I inhibitors. The 85 available complexes are classified by chemotype and experimental binding mode, and the ligand-protein interactions are discussed using the most representative inhibitors. The type and frequency of key inhibitor features are analyzed to give a final summary of the chemical requirements of promising p38α MAPK inhibitors. The proposed pharmacophore can be exploited to enhance the opportunities to identify novel type I inhibitors of p38α MAPK.
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Affiliation(s)
- Andrea Astolfi
- Department of Pharmaceutical Sciences, University of Perugia, Via A. Fabretti 48, 06123 Perugia (Italy)
| | - Nunzio Iraci
- Department of Pharmaceutical Sciences, University of Perugia, Via A. Fabretti 48, 06123 Perugia (Italy)
| | - Giuseppe Manfroni
- Department of Pharmaceutical Sciences, University of Perugia, Via A. Fabretti 48, 06123 Perugia (Italy)
| | - Maria Letizia Barreca
- Department of Pharmaceutical Sciences, University of Perugia, Via A. Fabretti 48, 06123 Perugia (Italy).
| | - Violetta Cecchetti
- Department of Pharmaceutical Sciences, University of Perugia, Via A. Fabretti 48, 06123 Perugia (Italy)
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15
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Jayabharathi J, Ramanathan P, Thanikachalam V, Karunakaran C. Optical and theoretical studies on Fe3O4–imidazole nanocomposite and clusters. NEW J CHEM 2015. [DOI: 10.1039/c4nj02068e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The larger surface curvature of nanocrystals reduces steric hindrance between surface binding molecules and provides a larger number of unsaturated dangling bonds on the nanocrystal surface.
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16
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Kour G, Gupta M, Vishwanathan B, Thirunavukkarasu K. Iron nanotube-silica composite (ZVI-S-PCAT modified silica composite) preparation, characterization and application as a recyclable catalytic system for 5-membered ring organic transformations. Dalton Trans 2015; 44:14975-90. [DOI: 10.1039/c5dt02028j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ZVI-S-PCAT modified silica composite is a successful catalytic framework for synthesizing 5-membered heterocylic rings and a future sensor material.
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Affiliation(s)
- Gurpreet Kour
- Department of Chemistry
- University of Jammu
- Jammu 180006
- India
| | - Monika Gupta
- Department of Chemistry
- University of Jammu
- Jammu 180006
- India
| | - B. Vishwanathan
- National Centre for Catalysis Research
- Indian Institute of Technology-Madras
- Chennai 600036
- India
| | - K. Thirunavukkarasu
- National Centre for Catalysis Research
- Indian Institute of Technology-Madras
- Chennai 600036
- India
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17
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Jayabharathi J, Ramanathan P, Thanikachalam V. Synthesis and optical properties of phenanthromidazole derivatives for organic electroluminescent devices. NEW J CHEM 2015. [DOI: 10.1039/c4nj01515k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The external quantum efficiency roll-off may be due to triplet–triplet annihilation (TTA) and triplet–polaron annihilation (TPA).
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18
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Jayabharathi J, Arunpandiyan A, Thanikachalam V, Ramanathan P. Photoinduced Electron Transfer from Phenanthrimidazole to Magnetic Nanoparticles. J Fluoresc 2015; 25:137-45. [DOI: 10.1007/s10895-014-1490-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 12/02/2014] [Indexed: 10/24/2022]
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19
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Deletion of serum amyloid A3 improves high fat high sucrose diet-induced adipose tissue inflammation and hyperlipidemia in female mice. PLoS One 2014; 9:e108564. [PMID: 25251243 PMCID: PMC4177399 DOI: 10.1371/journal.pone.0108564] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 08/22/2014] [Indexed: 12/17/2022] Open
Abstract
Serum amyloid A (SAA) increases in response to acute inflammatory stimuli and is modestly and chronically elevated in obesity. SAA3, an inducible form of SAA, is highly expressed in adipose tissue in obese mice where it promotes monocyte chemotaxis, providing a mechanism for the macrophage accumulation that occurs with adipose tissue expansion in obesity. Humans do not express functional SAA3 protein, but instead express SAA1 and SAA2 in hepatic as well as extrahepatic tissues, making it difficult to distinguish between liver and adipose tissue-specific SAA effects. SAA3 does not circulate in plasma, but may exert local effects that impact systemic inflammation. We tested the hypothesis that SAA3 contributes to chronic systemic inflammation and adipose tissue macrophage accumulation in obesity using mice deficient for Saa3 (Saa3(-/-)). Mice were rendered obese by feeding a pro-inflammatory high fat, high sucrose diet with added cholesterol (HFHSC). Both male and female Saa3(-/-) mice gained less weight on the HFHSC diet compared to Saa3(+/+) littermate controls, with no differences in body composition or resting metabolism. Female Saa3(-/-) mice, but not males, had reduced HFHSC diet-induced adipose tissue inflammation and macrophage content. Both male and female Saa3(-/-) mice had reduced liver Saa1 and Saa2 expression in association with reduced plasma SAA. Additionally, female Saa3(-/-) mice, but not males, showed improved plasma cholesterol, triglycerides, and lipoprotein profiles, with no changes in glucose metabolism. Taken together, these results suggest that the absence of Saa3 attenuates liver-specific SAA (i.e., SAA1/2) secretion into plasma and blunts weight gain induced by an obesogenic diet. Furthermore, adipose tissue-specific inflammation and macrophage accumulation are attenuated in female Saa3(-/-) mice, suggesting a novel sexually dimorphic role for this protein. These results also suggest that Saa3 influences liver-specific SAA1/2 expression, and that SAA3 could play a larger role in the acute phase response than previously thought.
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20
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Sharma GVM, Ramesh A, Singh A, Srikanth G, Jayaram V, Duscharla D, Jun JH, Ummanni R, Malhotra SV. Imidazole derivatives show anticancer potential by inducing apoptosis and cellular senescence. MEDCHEMCOMM 2014. [DOI: 10.1039/c4md00277f] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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He L, Dai R, Zhang XR, Gao SY, He YY, Wang LB, Gao X, Yang LQ. Ligand-based 3D pharmacophore design, virtual screening and molecular docking for novel p38 MAPK inhibitors. Med Chem Res 2014. [DOI: 10.1007/s00044-014-1158-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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22
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Seerden JPG, Leusink-Ionescu G, Woudenberg-Vrenken T, Dros B, Molema G, Kamps JAAM, Kellogg RM. Synthesis and structure-activity relationships of 4-fluorophenyl-imidazole p38α MAPK, CK1δ and JAK2 kinase inhibitors. Bioorg Med Chem Lett 2014; 24:3412-8. [PMID: 24930833 DOI: 10.1016/j.bmcl.2014.05.080] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 05/20/2014] [Accepted: 05/22/2014] [Indexed: 01/11/2023]
Abstract
The synthesis and structure-activity relationships of novel 4-(4'-fluorophenyl)imidazoles as selective p38α MAPK, CK1δ and JAK2 inhibitors with improved water solubility are described. Microwave-assisted multicomponent reactions afforded 4-fluorophenyl-2,5-disubstituted imidazoles. Carboxylate and phosphonate groups were introduced via 'click' reactions. The kinase selectivity was influenced by the heteroaryl group at imidazole C-5 and the position of a carboxylic acid or tetrazole at imidazole C-2. For example, pyrimidines 15 and 34 inhibited p38α MAPK with IC50=250 nM and 96 nM, respectively. Pyridine 3 gave CK1δ inhibition with IC50=89 nM and pyridin-2-one 31 gave JAK2 inhibition with IC50=62 nM.
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Affiliation(s)
| | | | - Titia Woudenberg-Vrenken
- Laboratory for Endothelial Biomedicine & Vascular Drug Targeting Research, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen 9713 GZ, The Netherlands
| | - Bas Dros
- Syncom B.V., Kadijk 3, Groningen 9747 AT, The Netherlands
| | - Grietje Molema
- Laboratory for Endothelial Biomedicine & Vascular Drug Targeting Research, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen 9713 GZ, The Netherlands
| | - Jan A A M Kamps
- Laboratory for Endothelial Biomedicine & Vascular Drug Targeting Research, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen 9713 GZ, The Netherlands
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23
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Krementsov DN, Noubade R, Dragon JA, Otsu K, Rincon M, Teuscher C. Sex-specific control of central nervous system autoimmunity by p38 mitogen-activated protein kinase signaling in myeloid cells. Ann Neurol 2014; 75:50-66. [PMID: 24027119 DOI: 10.1002/ana.24020] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 08/02/2013] [Accepted: 08/27/2013] [Indexed: 01/12/2023]
Abstract
OBJECTIVE Multiple sclerosis (MS) is a chronic inflammatory demyelinating disease of the central nervous system (CNS), characterized by a global increasing incidence driven by relapsing-remitting disease in females. Investigators have described p38 mitogen-activated protein kinase (MAPK) as a key regulator of inflammatory responses in autoimmunity, but its role in the sexual dimorphism in MS or MS models remains unexplored. METHODS Toward this end, we used experimental autoimmune encephalomyelitis (EAE), the principal animal model of MS, combined with pharmacologic and genetic inhibition of p38 MAPK activity and transcriptomic analyses. RESULTS Pharmacologic inhibition of p38 MAPK selectively ameliorated EAE in female mice. Conditional deletion studies demonstrated that p38α signaling in macrophages/myeloid cells, but not T cells or dendritic cells, mediated this sexual dimorphism, which was dependent on the presence of adult sex hormones. Analysis of CNS inflammatory infiltrates showed that female but not male mice lacking p38α in myeloid cells exhibited reduced immune cell activation compared with controls, whereas peripheral T-cell priming was unaffected in both sexes. Transcriptomic analyses of myeloid cells revealed differences in p38α-controlled transcripts comprising female- and male-specific gene modules, with greater p38α dependence of proinflammatory gene expression in females. INTERPRETATION Our findings demonstrate a key role for p38α in myeloid cells in CNS autoimmunity and uncover important molecular mechanisms underlying sex differences in disease pathogenesis. Taken together, our results suggest that the p38 MAPK signaling pathway represents a novel target for much needed disease-modifying therapies for MS.
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Affiliation(s)
- Dimitry N Krementsov
- Department of Medicine, Immunobiology Program, University of Vermont, Burlington, VT
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Seerden JPG, Leusink-Ionescu G, Leguijt R, Saccavini C, Gelens E, Dros B, Woudenberg-Vrenken T, Molema G, Kamps JA, Kellogg RM. Syntheses and structure–activity relationships for some triazolyl p38α MAPK inhibitors. Bioorg Med Chem Lett 2014; 24:1352-7. [DOI: 10.1016/j.bmcl.2014.01.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 01/15/2014] [Indexed: 12/19/2022]
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25
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Thanikachalam V, Arunpandiyan A, Jayabharathi J, Karunakaran C, Ramanathan P. Nano rutile TiO2 catalysed synthesis of (E)-4-(2-(1-(4-chlorophenyl)-1H-phenanthro[9,10-d]imidazol-2-yl)vinyl)-N,N-dimethylaniline and its interaction with super paramagnetic nanoparticles. RSC Adv 2014. [DOI: 10.1039/c4ra10686e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The synthesis of (E)-4-(2-(1-(4-chlorophenyl)-1H-phenanthro[9,10-d]imidazol-2-yl)vinyl)-N,N-dimethylaniline (CPPIVI) has been carried out using TiO2 (R) as catalyst under solvent free conditions and characterized by NMR spectral studies.
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Affiliation(s)
- V. Thanikachalam
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
| | - A. Arunpandiyan
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
| | - J. Jayabharathi
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
| | - C. Karunakaran
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
| | - P. Ramanathan
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
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Selig R, Goettert M, Schattel V, Schollmeyer D, Albrecht W, Laufer S. A Frozen Analogue Approach to Aminopyridinylimidazoles Leading to Novel and Promising p38 MAP Kinase Inhibitors. J Med Chem 2012; 55:8429-39. [DOI: 10.1021/jm300852w] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Roland Selig
- Department of Medicinal Chemistry, University of Tuebingen, Auf der Morgenstelle 8, 72076
Tuebingen, Germany
| | - Marcia Goettert
- Department of Medicinal Chemistry, University of Tuebingen, Auf der Morgenstelle 8, 72076
Tuebingen, Germany
| | - Verena Schattel
- Department of Medicinal Chemistry, University of Tuebingen, Auf der Morgenstelle 8, 72076
Tuebingen, Germany
| | - Dieter Schollmeyer
- Department
of Organic Chemistry, University of Mainz, Duesbergweg 10-14, 55099 Mainz, Germany
| | - Wolfgang Albrecht
- c-a-i-r biosciences GmbH, Paul-Ehrlich-Strasse 15, 72076 Tuebingen, Germany
| | - Stefan Laufer
- Department of Medicinal Chemistry, University of Tuebingen, Auf der Morgenstelle 8, 72076
Tuebingen, Germany
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28
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Synthesis and biological activity of pyridopyridazin-6-one p38α MAP kinase inhibitors. Part 2. Bioorg Med Chem Lett 2012; 22:5979-83. [DOI: 10.1016/j.bmcl.2012.07.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 07/03/2012] [Accepted: 07/06/2012] [Indexed: 11/22/2022]
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29
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Ul-Haq Z, Khan W, Zia SR, Iqbal S. Structure-based 3D-QSAR models and dynamics analysis of novel N-benzyl pyridinone as p38α MAP kinase inhibitors for anticytokine activity. J Mol Graph Model 2012; 36:48-61. [PMID: 22534481 DOI: 10.1016/j.jmgm.2012.02.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2011] [Revised: 02/10/2012] [Accepted: 02/14/2012] [Indexed: 10/28/2022]
Abstract
A novel series of anticytokine N-benzyl pyridinone derivatives that targets p38α MAP kinase has been analyzed by utilizing a combination of molecular modeling techniques. Statistically significant structure-based 3D-QSAR models were generated for both CoMFA and CoMSIA, and validated through acceptable predictive ability to support both internal and external set of compounds. Structural changes within the protein key backbone residues (Met109 and Gly110), DFG loop position, and side chain movements (Lys53 and Asn114) as resulted by different substituents on these inhibitors were also examined by molecular dynamics simulation. The protocol applied in this study could be helpful to rationalize potent compounds with better inhibitory activity and selectivity profiles against p38α MAP kinase.
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Affiliation(s)
- Zaheer Ul-Haq
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center, for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan.
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30
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Ambure PS, Gangwal RP, Sangamwar AT. 3D-QSAR and molecular docking analysis of biphenyl amide derivatives as p38α mitogen-activated protein kinase inhibitors. Mol Divers 2012; 16:377-88. [DOI: 10.1007/s11030-011-9353-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Accepted: 12/22/2011] [Indexed: 11/29/2022]
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31
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Selig R, Schollmeyer D, Albrecht W, Laufer S. The application of Stille cross-coupling reactions with multiple nitrogen containing heterocycles. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.09.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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32
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Duffy JP, Harrington EM, Salituro FG, Cochran JE, Green J, Gao H, Bemis GW, Evindar G, Galullo VP, Ford PJ, Germann UA, Wilson KP, Bellon SF, Chen G, Taslimi P, Jones P, Huang C, Pazhanisamy S, Wang YM, Murcko MA, Su MS. The Discovery of VX-745: A Novel and Selective p38α Kinase Inhibitor. ACS Med Chem Lett 2011; 2:758-63. [PMID: 24900264 DOI: 10.1021/ml2001455] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2011] [Accepted: 07/28/2011] [Indexed: 01/24/2023] Open
Abstract
The synthesis of novel, selective, orally active 2,5-disubstituted 6H-pyrimido[1,6-b]pyridazin-6-one p38α inhibitors is described. Application of structural information from enzyme-ligand complexes guided the selection of screening compounds, leading to the identification of a novel class of p38α inhibitors containing a previously unreported bicyclic heterocycle core. Advancing the SAR of this series led to the eventual discovery of 5-(2,6-dichlorophenyl)-2-(2,4-difluorophenylthio)-6H-pyrimido[1,6-b]pyridazin-6-one (VX-745). VX-745 displays excellent enzyme activity and selectivity, has a favorable pharmacokinetic profile, and demonstrates good in vivo activity in models of inflammation.
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Affiliation(s)
- John P. Duffy
- Vertex Pharmaceuticals, 130 Waverly Street, Cambridge, Massachusetts 02139-4242, United States
| | | | | | - John E. Cochran
- Vertex Pharmaceuticals, 130 Waverly Street, Cambridge, Massachusetts 02139-4242, United States
| | - Jeremy Green
- Vertex Pharmaceuticals, 130 Waverly Street, Cambridge, Massachusetts 02139-4242, United States
| | - Huai Gao
- Vertex Pharmaceuticals, 130 Waverly Street, Cambridge, Massachusetts 02139-4242, United States
| | - Guy W. Bemis
- Vertex Pharmaceuticals, 130 Waverly Street, Cambridge, Massachusetts 02139-4242, United States
| | | | | | - Pamella J. Ford
- Vertex Pharmaceuticals, 130 Waverly Street, Cambridge, Massachusetts 02139-4242, United States
| | - Ursula A. Germann
- Vertex Pharmaceuticals, 130 Waverly Street, Cambridge, Massachusetts 02139-4242, United States
| | | | | | | | | | - Peter Jones
- Vertex Pharmaceuticals, 130 Waverly Street, Cambridge, Massachusetts 02139-4242, United States
| | - Cassey Huang
- Vertex Pharmaceuticals, 130 Waverly Street, Cambridge, Massachusetts 02139-4242, United States
| | - S. Pazhanisamy
- Vertex Pharmaceuticals, 130 Waverly Street, Cambridge, Massachusetts 02139-4242, United States
| | | | - Mark A. Murcko
- Vertex Pharmaceuticals, 130 Waverly Street, Cambridge, Massachusetts 02139-4242, United States
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Barbosa MLDC, Fumian MM, Miranda ALPD, Barreiro EJ, Lima LM. Therapeutic approaches for tumor necrosis factor inhibition. BRAZ J PHARM SCI 2011. [DOI: 10.1590/s1984-82502011000300002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Tumor necrosis factor (TNF) consists of an inflammatory cytokine essential for homeostasis and organism defense. Despite its physiological relevance, both increased biosynthesis and release of TNF lead to the exacerbation of inflammatory and oxidative responses, which are related to the pathogenesis of a host of diseases of an inflammatory, autoimmune and/or infectious nature. In this context, effective therapeutic approaches for the modulation of TNF have been the focus of research efforts. Approximately one million individuals worldwide have been treated with biotechnological inhibitors of this cytokine, the so-called anti-TNF biopharmaceuticals. However, given the high risk of infection and the limitations related to cost and administration routes, new therapeutic approaches aimed at biological targets that directly or indirectly modulate the production and/or activation of TNF appear promising alternatives for the discovery of new anti-inflammatory and immunomodulatory orally active drugs and are therefore discussed in this paper.
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Affiliation(s)
| | | | | | - Eliezer J. Barreiro
- Federal University of Rio de Janeiro; Federal University of Rio de Janeiro; Federal University of Rio de Janeiro
| | - Lídia Moreira Lima
- Federal University of Rio de Janeiro; Federal University of Rio de Janeiro; Federal University of Rio de Janeiro
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34
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A simple and efficient method for the synthesis of highly substituted imidazoles using 3-aroylquinoxalin-2(1H)-ones. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.06.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Tynebor RM, Chen MH, Natarajan SR, O’Neill EA, Thompson JE, Fitzgerald CE, O’Keefe SJ, Doherty JB. Synthesis and biological activity of pyridopyridazin-6-one p38 MAP kinase inhibitors. Part 1. Bioorg Med Chem Lett 2011; 21:411-6. [DOI: 10.1016/j.bmcl.2010.10.128] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Revised: 10/21/2010] [Accepted: 10/25/2010] [Indexed: 10/18/2022]
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36
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A novel and an efficient catalyst for one-pot synthesis of 2,4,5-trisubstituted imidazoles by using microwave irradiation under solvent-free conditions. J CHEM SCI 2010. [DOI: 10.1007/s12039-010-0051-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Wang X, Sathunuru R, Melendez V, Kozar MP, Lin AJ. Facile synthesis of 2,4-diamino-6-alkyl- or 6-aryl-pyrimidine derivatives. J Heterocycl Chem 2010. [DOI: 10.1002/jhet.419] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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38
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Serry AM, Luik S, Laufer S, Abadi AH. One-Pot Synthesis of 4,6-Diaryl-2-oxo(imino)-1,2-dihydropyridine-3-carbonitrile; a New Scaffold for p38α MAP Kinase Inhibition. ACTA ACUST UNITED AC 2010; 12:559-65. [DOI: 10.1021/cc1000488] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Aya M. Serry
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt, and Department of Pharmaceutical and Medicinal Chemistry, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Sabine Luik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt, and Department of Pharmaceutical and Medicinal Chemistry, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Stefan Laufer
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt, and Department of Pharmaceutical and Medicinal Chemistry, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Ashraf H. Abadi
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt, and Department of Pharmaceutical and Medicinal Chemistry, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
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39
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Krishnamoorthy R, Lam SQ, Manley CM, Herr RJ. Palladium-catalyzed preparation of Weinreb amides from boronic acids and N-methyl-N-methoxycarbamoyl chloride. J Org Chem 2010; 75:1251-8. [PMID: 20088577 DOI: 10.1021/jo902647h] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A simple protocol for the synthesis of Weinreb benzamides and alpha,beta-unsaturated Weinreb amides through a palladium-catalyzed cross-coupling reaction between organoboronic acids and N-methoxy-N-methylcarbamoyl chloride has been developed. The method is also applicable to the use of potassium organotrifluoroborates.
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Affiliation(s)
- Ravi Krishnamoorthy
- Medicinal Chemistry Department, Albany Molecular Research, Inc., 26 Corporate Circle, P.O. Box 15098, Albany, New York 12212-5098, USA
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40
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Bellina F, Rossi R. Regioselective Functionalization of the Imidazole Ring via Transition Metal-Catalyzed CN and CC Bond Forming Reactions. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000144] [Citation(s) in RCA: 123] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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Tynebor RM, Chen MH, Natarajan SR, O’Neill EA, Thompson JE, Fitzgerald CE, O’Keefe SJ, Doherty JB. Synthesis and biological activity of 2H-quinolizin-2-one based p38α MAP kinase inhibitors. Bioorg Med Chem Lett 2010; 20:2765-9. [DOI: 10.1016/j.bmcl.2010.03.069] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2010] [Revised: 03/16/2010] [Accepted: 03/17/2010] [Indexed: 10/19/2022]
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42
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Amide-based inhibitors of p38α MAP kinase. Part 1: Discovery of novel N-pyridyl amide lead molecules. Bioorg Med Chem Lett 2010; 20:2556-9. [DOI: 10.1016/j.bmcl.2010.02.088] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2010] [Revised: 02/23/2010] [Accepted: 02/24/2010] [Indexed: 11/21/2022]
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43
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Discovery of substituted biphenyl imidazoles as potent, bioavailable bombesin receptor subtype-3 agonists. Bioorg Med Chem Lett 2010; 20:1913-7. [DOI: 10.1016/j.bmcl.2010.01.154] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2010] [Revised: 01/21/2010] [Accepted: 01/27/2010] [Indexed: 11/22/2022]
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44
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Peifer C, Abadleh M, Bischof J, Hauser D, Schattel V, Hirner H, Knippschild U, Laufer S. 3,4-Diaryl-isoxazoles and -imidazoles as potent dual inhibitors of p38alpha mitogen activated protein kinase and casein kinase 1delta. J Med Chem 2009; 52:7618-30. [PMID: 19591487 DOI: 10.1021/jm9005127] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this study, we report on the discovery of isoxazole 1 as a potent dual inhibitor of p38alpha (IC(50) = 0.45 microM) and CK1delta (IC(50) = 0.23 microM). Because only a few effective small molecule inhibitors of CK1 have been described so far, we aimed to develop this structural class toward specific agents. Molecular modeling studies comparing p38alpha/CK1delta suggested an optimization strategy leading to design, synthesis, biological characterization, and SAR of highly potent compounds including 9 (IC(50) p38alpha = 0.006 microM; IC(50) CK1delta = 1.6 microM), 13 (IC(50) p38alpha = 2.52 microM; IC(50) CK1delta = 0.033 microM), 17 (IC(50) p38alpha = 0.019 microM; IC(50) CK1delta = 0.004 microM; IC(50) CK1epsilon = 0.073 microM), and 18 (CKP138) (IC(50) p38alpha = 0.041 microM; IC(50) CK1delta = 0.005 microM; IC(50) CK1epsilon = 0.447 microM) possessing differentiated specificity. Selected compounds were profiled over 76 kinases and evaluation of their cellular efficacy showed 18 (CKP138) to be a highly potent and dual-specific inhibitor of CK1delta and p38alpha.
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Affiliation(s)
- Christian Peifer
- Department of Pharmacy, Eberhard-Karls-University, Auf der Morgenstelle 8, D-72076 Tuebingen, Germany.
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45
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Lumeras W, Caturla F, Vidal L, Esteve C, Balagué C, Orellana A, Domínguez M, Roca R, Huerta JM, Godessart N, Vidal B. Design, Synthesis, and Structure−Activity Relationships of Aminopyridine N-Oxides, a Novel Scaffold for the Potent and Selective Inhibition of p38 Mitogen Activated Protein Kinase. J Med Chem 2009; 52:5531-45. [DOI: 10.1021/jm9008604] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Ramón Roca
- Department of Computational and Structural Drug Discovery
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46
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Burnette BL, Selness S, Devraj R, Jungbluth G, Kurumbail R, Stillwell L, Anderson G, Mnich S, Hirsch J, Compton R, De Ciechi P, Hope H, Hepperle M, Keith RH, Naing W, Shieh H, Portanova J, Zhang Y, Zhang J, Leimgruber RM, Monahan J. SD0006: a potent, selective and orally available inhibitor of p38 kinase. Pharmacology 2009; 84:42-60. [PMID: 19590255 DOI: 10.1159/000227286] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2008] [Accepted: 04/27/2009] [Indexed: 02/06/2023]
Abstract
SD0006 is a diarylpyrazole that was prepared as an inhibitor of p38 kinase-alpha (p38alpha). In vitro, SD0006 was selective for p38alpha kinase over 50 other kinases screened (including p38gamma and p38delta with modest selectivity over p38beta). Crystal structures with p38alpha show binding at the ATP site with additional residue interactions outside the ATP pocket unique to p38alpha that can confer advantages over other ATP competitive inhibitors. Direct correlation between inhibition of p38alpha activity and that of lipopolysaccharide-stimulated TNFalpha release was established in cellular models and in vivo, including a phase 1 clinical trial. Potency (IC(50)) for inhibiting tumor necrosis factor-alpha (TNFalpha) release, in vitro and in vivo, was <200 nmol/l. In vivo, SD0006 was effective in the rat streptococcal-cell-wall-induced arthritis model, with dramatic protective effects on paw joint integrity and bone density as shown by radiographic analysis. In the murine collagen-induced arthritis model, equivalence was demonstrated to anti-TNFalpha treatment. SD0006 also demonstrated good oral anti-inflammatory efficacy with excellent cross-species correlation between the rat, cynomolgus monkey, and human. SD0006 suppressed expression of multiple proinflammatory proteins at both the transcriptional and translational levels. These properties suggest SD0006 could provide broader therapeutic efficacy than cytokine-targeted monotherapeutics.
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Affiliation(s)
- Barry L Burnette
- Pfizer Global Research and Development, Pfizer, Chesterfield, Mo. 63017, USA.
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47
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Kamenecka T, Habel J, Duckett D, Chen W, Ling YY, Frackowiak B, Jiang R, Shin Y, Song X, LoGrasso P. Structure-activity relationships and X-ray structures describing the selectivity of aminopyrazole inhibitors for c-Jun N-terminal kinase 3 (JNK3) over p38. J Biol Chem 2009; 284:12853-61. [PMID: 19261605 DOI: 10.1074/jbc.m809430200] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
c-Jun N-terminal kinase 3alpha1 (JNK3alpha1) is a mitogen-activated protein kinase family member expressed primarily in the brain that phosphorylates protein transcription factors, including c-Jun and activating transcription factor-2 (ATF-2) upon activation by a variety of stress-based stimuli. In this study, we set out to design JNK3-selective inhibitors that had >1000-fold selectivity over p38, another closely related mitogen-activated protein kinase family member. To do this we employed traditional medicinal chemistry principles coupled with structure-based drug design. Inhibitors from the aminopyrazole class, such as SR-3576, were found to be very potent JNK3 inhibitors (IC(50) = 7 nm) with >2800-fold selectivity over p38 (p38 IC(50) > 20 microm) and had cell-based potency of approximately 1 microm. In contrast, indazole-based inhibitors exemplified by SR-3737 were potent inhibitors of both JNK3 (IC(50) = 12 nm) and p38 (IC(50) = 3 nm). These selectivity differences between the indazole class and the aminopyrazole class came despite nearly identical binding (root mean square deviation = 0.33 A) of these two compound classes to JNK3. The structural features within the compounds giving rise to the selectivity in the aminopyrazole class include the highly planar nature of the pyrazole, N-linked phenyl structures, which better occupied the smaller active site of JNK3 compared with the larger active site of p38.
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Affiliation(s)
- Ted Kamenecka
- Department of Molecular Therapeutics and Translational Research Institute, The Scripps Research Institute, Jupiter, FL 33458, USA
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48
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Koch P, Schollmeyer D, Laufer S. 4-[5-(4-Fluoro-phen-yl)-1H-imidazol-4-yl]pyridine. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o573. [PMID: 21582228 PMCID: PMC2968498 DOI: 10.1107/s1600536809005650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2009] [Accepted: 02/17/2009] [Indexed: 11/25/2022]
Abstract
In the title compound, C(14)H(10)FN(3), the imidazole ring makes dihedral angles of 28.2 (1) and 36.60 (9)° with the pyridine ring and the 4-fluoro-phenyl ring, respectively. The pyridine ring forms a dihedral angle of 44.68 (9)° with the 4-fluoro-phenyl ring. Inter-molecular N-H⋯N hydrogen bonds are observed in the crystal structure.
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Affiliation(s)
- Pierre Koch
- Institute of Pharmacy, Department of Pharmaceutical and Medicinal Chemistry, Eberhard-Karls-University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Dieter Schollmeyer
- Department of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55099 Mainz, Germany
| | - Stefan Laufer
- Institute of Pharmacy, Department of Pharmaceutical and Medicinal Chemistry, Eberhard-Karls-University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
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Discovery of potent inhibitors of interleukin-2 inducible T-cell kinase (ITK) through structure-based drug design. Bioorg Med Chem Lett 2009; 19:773-7. [DOI: 10.1016/j.bmcl.2008.12.028] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2008] [Revised: 12/03/2008] [Accepted: 12/04/2008] [Indexed: 11/21/2022]
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Lavoie JP, Thompson D, Hamilton E, Debrue M, David F, Hickey G. Effects of a MAPK p38 inhibitor on lung function and airway inflammation in equine recurrent airway obstruction. Equine Vet J 2009; 40:577-83. [PMID: 19031513 DOI: 10.2746/042516408x284646] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
REASONS FOR PERFORMING STUDY It has been suggested that many of the beneficial effects of corticosteroids are mediated through mitogen-activated protein kinase (MAPK) p38 inhibition. OBJECTIVE To investigate the efficacy of the MAPK p38 inhibitor compound MRL-EQ1 to either prevent (Phase 1) or treat (Phase 2) recurrent airway obstruction (RAO) in horses. METHODS MRL-EQ1 was administered i.v. at a dosage of 0.75-1.5 mg/kg bwt q. 12 h. In Phase 1, susceptible horses in clinical remission were divided into 2 groups (n = 5/group), based on historical values of respiratory mechanics. All horses were entered in the study in pairs (one control, one treated horse) and exposed to the same environmental challenge (stabling, mouldy hay and dusty conditions). The treatment group received MRL-EQ1 for 14 days while the control horses were untreated during the same period. In Phase 2, affected horses were ranked by severity of respiratory dysfunction and split randomly into either dexamethasone or MRL-EQ1 treatment groups (n = 5/group). Bronchoalveolar lavage fluid, respiratory mechanic measurements, MRL-EQ1 plasma concentration and tumour necrosis factor (TNF) whole blood activity were evaluated sequentially. RESULTS In Phase 1, MRL-EQ1 did not prevent the occurrence of clinical signs and pulmonary inflammation. However, treatment was associated with a reduction in severity and a delay in the onset of signs and a reduction in pulmonary neutrophilia. In Phase 2, plasma concentrations achieved resulted in ex vivo suppression of lipopolysaccharide-induced TNF production in equine blood. MRL-EQ1 did not improve airway inflammation or lung function and was associated in a dose dependent manner with behavioural (depression, excitability) and blood changes (neutrophilia, increased serum muscle enzyme concentrations). CONCLUSIONS Inhibition of p38 in the horse was partially effective in reducing clinical signs and airway inflammation when administered prior to, but not during clinical exacerbation in RAO. POTENTIAL RELEVANCE Inhibitors of p38 MAPK with a better toxicity profile may be effective in the prevention or treatment of RAO.
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Affiliation(s)
- J P Lavoie
- Faculté de médecine vétérinaire, Université de Montréal, C.P 5000, Saint-Hyacinthe, Quebec J2S 7C6, Canada
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