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Gergely M, Kollár L. Aminothiazoles and aminothiadiazoles as nucleophiles in aminocarbonylation of iodobenzene derivatives. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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2
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Structural features of subtype-selective EP receptor modulators. Drug Discov Today 2016; 22:57-71. [PMID: 27506873 DOI: 10.1016/j.drudis.2016.08.003] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 06/20/2016] [Accepted: 08/01/2016] [Indexed: 12/11/2022]
Abstract
Prostaglandin E2 is a potent endogenous molecule that binds to four different G-protein-coupled receptors: EP1-4. Each of these receptors is a valuable drug target, with distinct tissue localisation and signalling pathways. We review the structural features of EP modulators required for subtype-selective activity, as well as the structural requirements for improved pharmacokinetic parameters. Novel EP receptor subtype selective agonists and antagonists appear to be valuable drug candidates in the therapy of many pathophysiological states, including ulcerative colitis, glaucoma, bone healing, B cell lymphoma, neurological diseases, among others, which have been studied in vitro, in vivo and in early phase clinical trials.
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Lee ECY, Futatsugi K, Arcari JT, Bahnck K, Coffey SB, Derksen DR, Kalgutkar AS, Loria PM, Sharma R. Optimization of amide-based EP3 receptor antagonists. Bioorg Med Chem Lett 2016; 26:2670-5. [PMID: 27107947 DOI: 10.1016/j.bmcl.2016.04.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 04/04/2016] [Accepted: 04/05/2016] [Indexed: 11/17/2022]
Abstract
Prostaglandin E receptor subtype 3 (EP3) antagonism may treat a variety of symptoms from inflammation to cardiovascular and metabolic diseases. Previously, most EP3 antagonists were large acidic ligands that mimic the substrate, prostaglandin E2 (PGE2). This manuscript describes the optimization of a neutral small molecule amide series with improved lipophilic efficiency (LipE) also known as lipophilic ligand efficiency (LLE) ((a) Nat. Rev. Drug Disc.2007, 6, 881; (b) Annu. Rep. Med. Chem.2010, 45, 380).
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Affiliation(s)
- Esther C Y Lee
- Worldwide Medicinal Chemistry, Pfizer Worldwide Research & Development, Cambridge, MA 02139, United States.
| | - Kentaro Futatsugi
- Worldwide Medicinal Chemistry, Pfizer Worldwide Research & Development, Cambridge, MA 02139, United States
| | - Joel T Arcari
- Worldwide Medicinal Chemistry, Pfizer Worldwide Research & Development, Groton, CT 06340, United States
| | - Kevin Bahnck
- Worldwide Medicinal Chemistry, Pfizer Worldwide Research & Development, Groton, CT 06340, United States
| | - Steven B Coffey
- Worldwide Medicinal Chemistry, Pfizer Worldwide Research & Development, Groton, CT 06340, United States
| | - David R Derksen
- Pharmacokinetics, Dynamics, and Metabolism, Pfizer Worldwide Research & Development, Groton, CT 06340, United States
| | - Amit S Kalgutkar
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Worldwide Research & Development, Cambridge, MA 02139, United States
| | - Paula M Loria
- Pharmacokinetics, Dynamics, and Metabolism, Pfizer Worldwide Research & Development, Groton, CT 06340, United States
| | - Raman Sharma
- Pharmacokinetics, Dynamics, and Metabolism, Pfizer Worldwide Research & Development, Groton, CT 06340, United States
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Niu P, Kang J, Tian X, Song L, Liu H, Wu J, Yu W, Chang J. Synthesis of 2-amino-1,3,4-oxadiazoles and 2-amino-1,3,4-thiadiazoles via sequential condensation and I2-mediated oxidative C–O/C–S bond formation. J Org Chem 2015; 80:1018-24. [PMID: 25506709 DOI: 10.1021/jo502518c] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
2-Amino-substituted 1,3,4-oxadiazoles and 1,3,4-thiadiazoles were synthesized via condensation of semicarbazide/thiosemicarbazide and the corresponding aldehydes followed by I2-mediated oxidative C–O/C–S bond formation. This transition-metal-free sequential synthesis process is compatible with aromatic, aliphatic, and cinnamic aldehydes, providing facile access to a variety of diazole derivatives bearing a 2-amino substituent in an efficient and scalable fashion.
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Haider S, Alam MS, Hamid H. 1,3,4-Thiadiazoles: A potent multi targeted pharmacological scaffold. Eur J Med Chem 2015; 92:156-77. [DOI: 10.1016/j.ejmech.2014.12.035] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 12/15/2014] [Accepted: 12/20/2014] [Indexed: 11/30/2022]
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Fascio ML, Errea MI, D'Accorso NB. Imidazothiazole and related heterocyclic systems. Synthesis, chemical and biological properties. Eur J Med Chem 2014; 90:666-83. [PMID: 25499987 DOI: 10.1016/j.ejmech.2014.12.012] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 12/04/2014] [Accepted: 12/06/2014] [Indexed: 10/24/2022]
Abstract
Fused heterobicyclic systems have gained much importance in the field of medicinal chemistry because of their broad spectrum of physiological activities. Among the heterocyclic rings containing bridgehead nitrogen atom, imidazothiazoles derivatives are especially attractive because of their different biological activities. Since many imidazothiazoles derivatives are effective for treating several diseases, is interesting to analyze the behavior of some isosteric related heterocycles, such as pirrolothiazoles, imidazothiadiazoles and imidazotriazoles. In this context, this review summarizes the current knowledge about the syntheses and biological behavior of these families of heterocycles. Traditional synthetic methodologies as well as alternative synthetic procedures are described. Among these last methodologies, the use of multicomponent reaction, novel and efficient coupling reagents, and environmental friendly strategies, like microwave assistance and solvent-free condition in ionic liquids are also summarized. This review includes the biological assessments, docking research and studies of mechanism of action performed in order to obtain the compounds leading to the development of new drugs.
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Affiliation(s)
- Mirta L Fascio
- CIHIDECAR-CONICET-Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2 - Ciudad Universitaria, 1428 Buenos Aires, Argentina
| | - María Inés Errea
- Departamento de Ingeniería Química, Instituto Tecnológico de Buenos Aires, Av. Eduardo Madero 399, 1106 Buenos Aires, Argentina
| | - Norma Beatriz D'Accorso
- CIHIDECAR-CONICET-Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2 - Ciudad Universitaria, 1428 Buenos Aires, Argentina.
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Hu Y, Li CY, Wang XM, Yang YH, Zhu HL. 1,3,4-Thiadiazole: synthesis, reactions, and applications in medicinal, agricultural, and materials chemistry. Chem Rev 2014; 114:5572-610. [PMID: 24716666 DOI: 10.1021/cr400131u] [Citation(s) in RCA: 328] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yang Hu
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University , Nanjing 210093, People's Republic of China
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Matulková I, Cihelka J, Pojarová M, Fejfarová K, Dušek M, Císařová I, Vaněk P, Kroupa J, Němec P, Tesařová N, Němec I. Molecular crystals of 2-amino-1,3,4-thiadiazole with inorganic oxyacids – crystal engineering, phase transformations and NLO properties. CrystEngComm 2014. [DOI: 10.1039/c3ce42306a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Synthetic methods, chemistry, and the anticonvulsant activity of thiadiazoles. INTERNATIONAL JOURNAL OF MEDICINAL CHEMISTRY 2013; 2013:348948. [PMID: 25405032 PMCID: PMC4207456 DOI: 10.1155/2013/348948] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Revised: 02/08/2013] [Accepted: 02/12/2013] [Indexed: 11/18/2022]
Abstract
The chemistry of heterocyclic compounds has been an interesting field of study for a long time. Heterocyclic nucleus 1,3,4-thiadiazole constitutes an important class of compounds for new drug development. The synthesis of novel thiadiazole derivatives and investigation of their chemical and biological behavior have gained more importance in recent decades. The search for antiepileptic compounds with more selective activity and lower toxicity continues to be an active area of intensive investigation in medicinal chemistry. During the recent years, there has been intense investigation of different classes of thiadiazole compounds, many of which possess extensive pharmacological activities, namely, antimicrobial activity, anticonvulsant, antifungal antidiabetic, anti-inflammatory, antioxidant, and antituberculosis activities, and so forth. The resistance towards available drugs is rapidly becoming a major worldwide problem. The need to design new compounds to deal with this resistance has become one of the most important areas of research today. Thiadiazole is a versatile moiety that exhibits a wide variety of biological activities. Thiadiazole moiety acts as "hydrogen binding domain" and "two-electron donor system." It also acts as a constrained pharmacophore. On the basis of the reported literature, we study here thiadiazole compounds and their synthetic methods chemistry and anticonvulsant activity.
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Copin C, Henry N, Buron F, Routier S. Synthesis of 2,6-Disubstituted Imidazo[2,1-b][1,3,4]thiadiazoles through Cyclization and Suzuki-Miyaura Cross-Coupling Reactions. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200237] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Morales-Ramos ÁI, Li YH, Hilfiker M, Mecom JS, Eidam P, Shi D, Tseng PS, Brooks C, Zhang D, Wang N, Jaworski JP, Morrow D, Fries H, Edwards R, Jin J. Structure-activity relationship studies of novel 3-oxazolidinedione-6-naphthyl-2-pyridinones as potent and orally bioavailable EP3 receptor antagonists. Bioorg Med Chem Lett 2011; 21:2806-11. [PMID: 21514150 DOI: 10.1016/j.bmcl.2011.03.107] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2011] [Revised: 03/25/2011] [Accepted: 03/29/2011] [Indexed: 01/27/2023]
Abstract
Multiple regions of the 3-oxazolidinedione-6-naphthyl-pyridinone series identified via high throughput screening were explored. SAR studies of these regions including the left-hand side oxazolidinedione moiety, α-substituent on the oxazolidinedione ring, central pyridinone core, and substituents on the central pyridinone core led to the discovery of potent EP(3) receptor antagonists such as compound 29 which possesses outstanding rat pharmacokinetic properties. Synthesis and SAR of these novel compounds and DMPK properties of representative compounds are discussed.
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Inhibitors of Leishmania GDP-mannose pyrophosphorylase identified by high-throughput screening of small-molecule chemical library. Antimicrob Agents Chemother 2010; 54:1712-9. [PMID: 20160053 DOI: 10.1128/aac.01634-09] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The current treatment for leishmaniasis is based on chemotherapy, which relies on a handful of drugs with serious limitations, such as high cost, toxicity, and a lack of efficacy in regions of endemicity. Therefore, the development of new, effective, and affordable antileishmanial drugs is a global health priority. Leishmania synthesizes a range of mannose-rich glycoconjugates that are essential for parasite virulence and survival. A prerequisite for glycoconjugate biosynthesis is the conversion of monosaccharides to the activated mannose donor, GDP-mannose, the product of a reaction catalyzed by GDP-mannose pyrophosphorylase (GDP-MP). The deletion of the gene encoding GDP-MP in Leishmania led to a total loss of virulence, indicating that the enzyme is an ideal drug target. We developed a phosphate sensor-based high-throughput screening assay to quantify the activity of GDP-MP and screened a library containing approximately 80,000 lead-like compounds for GDP-MP inhibitors. On the basis of their GDP-MP inhibitory properties and chemical structures, the activities of 20 compounds which were not toxic to mammalian cells were tested against ex vivo amastigotes and in macrophage amastigote assays. The most potent compound identified in the primary screen (compound 3), a quinoline derivative, demonstrated dose-dependent activity in both assays (50% inhibitory concentration = 21.9 microM in the macrophage assay) and was shown to be nontoxic to human fibroblasts. In order to elucidate signs of an early structure-activity relationship (SAR) for this class of compounds, we obtained and tested analogues of compound 3 and undertook limited medicinal chemistry optimization, which included the use of a number of SAR probes of the piperazinyl aryl substituent of compound 3. We have identified novel candidate compounds for the design and synthesis of antileishmanial therapeutics.
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3-(2-Aminocarbonylphenyl)propanoic acid analogs as potent and selective EP3 receptor antagonists. Part 1: Discovery and exploration of the carboxyamide side chain. Bioorg Med Chem 2010; 18:80-90. [DOI: 10.1016/j.bmc.2009.11.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2009] [Revised: 11/05/2009] [Accepted: 11/06/2009] [Indexed: 11/23/2022]
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