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Sangwan S, Yadav N, Kumar R, Chauhan S, Dhanda V, Walia P, Duhan A. A score years’ update in the synthesis and biological evaluation of medicinally important 2-pyridones. Eur J Med Chem 2022; 232:114199. [DOI: 10.1016/j.ejmech.2022.114199] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/06/2022] [Accepted: 02/10/2022] [Indexed: 12/18/2022]
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2
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Takeuchi Y, Kawasaki S, Akagawa K, Kudo K. Iterative synthesis of nitrogen-containing polyketide via oxime intermediates. RSC Adv 2022; 12:5275-5279. [PMID: 35425541 PMCID: PMC8981394 DOI: 10.1039/d2ra00108j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 02/06/2022] [Indexed: 12/04/2022] Open
Abstract
Typical polyketides consist of C, H, and O atoms, whereas several types of N-containing polyketides are known to show intriguing properties. Because conventional synthetic approaches for such compounds focus on only specific structures, a more general method is desirable. Here, we have developed an iterative synthesis of nitrogen-containing polyketide. Chain elongation of carboxylic acid via decarboxylative Claisen condensation with malonic acid half thioester was iteratively performed to construct carbon frameworks. β-Keto groups formed by the chain elongation were appropriately converted to O-methyl oximes for incorporation of nitrogen atoms. Cyclization of the resulting oxime intermediates followed by reductive N–O cleavage afforded structurally diverse nitrogen-containing polyketides such as 2-pyridone, 4-aminopyrone, and 4-aminosalicylate. This method was finally applied to the synthesis of (R)-6-aminomellein, which is a nitrogen-substituted derivative of bioactive compound, (R)-6-methoxymellein. The versatility of the present method would enable the synthesis of diverse polyketides with nitrogen functional groups, which can be potentially utilized for the development of novel bioactive compounds. An iterative synthesis of nitrogen-containing polyketides has been developed. Structurally diverse polyketides with nitrogen functional groups were obtained by the uniform protocol.![]()
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Affiliation(s)
- Yuta Takeuchi
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 1538505, Japan
| | - Shun Kawasaki
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 1538505, Japan
| | - Kengo Akagawa
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 1538505, Japan
| | - Kazuaki Kudo
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 1538505, Japan
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Yadav N, Sangwan S, Kumar R, Chauhan S, Duhan A, Singh A, Arya RK. Comprehensive Overview of Progress in Functionalization of 2‐Pyridone and 2, 4 ‐Dihydroxy Pyridine: Key Constituents of Vital Natural Products. ChemistrySelect 2021. [DOI: 10.1002/slct.202102941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Neelam Yadav
- Department of Chemistry Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
| | - Sarita Sangwan
- Department of Chemistry Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
| | - Ravi Kumar
- Department of Chemistry Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
- MAP Section Department of Genetics and Plant Breeding Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
| | - Sonu Chauhan
- Department of Chemistry Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
| | - Anil Duhan
- Department of Chemistry Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
| | - Ajay Singh
- Department of Chemistry Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
| | - Rajesh K. Arya
- MAP Section Department of Genetics and Plant Breeding Chaudhary Charan Singh Haryana Agricultural University Hisar Haryana India 125004
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Pejler G. Novel Insight into the in vivo Function of Mast Cell Chymase: Lessons from Knockouts and Inhibitors. J Innate Immun 2020; 12:357-372. [PMID: 32498069 DOI: 10.1159/000506985] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 03/03/2020] [Indexed: 12/14/2022] Open
Abstract
Mast cells are now recognized as key players in diverse pathologies, but the mechanisms by which they contribute in such settings are only partially understood. Mast cells are packed with secretory granules, and when they undergo degranulation in response to activation the contents of the granules are expelled to the extracellular milieu. Chymases, neutral serine proteases, are the major constituents of the mast cell granules and are hence released in large amounts upon mast cell activation. Following their release, chymases can cleave one or several of a myriad of potential substrates, and the cleavage of many of these could potentially have a profound impact on the respective pathology. Indeed, chymases have recently been implicated in several pathological contexts, in particular through studies using chymase inhibitors and by the use of chymase-deficient animals. In many cases, chymase has been shown to account for mast cell-dependent detrimental effects in the respective conditions and is therefore emerging as a promising drug target. On the other hand, chymase has been shown to have protective roles in other pathological settings. More unexpectedly, chymase has also been shown to control certain homeostatic processes. Here, these findings are reviewed.
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Affiliation(s)
- Gunnar Pejler
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden, .,Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden,
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Ladraa S, Chioua M, Belfaitah A. A Simple and Ecofriendly One-Pot Synthesis of Highly Substituted 3-Cyanopyridine-Quinoline Hybridsviaa Triphenyphosphine-Catalyzed Multicomponent Reaction Under Mild Conditions. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2631] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Souheila Ladraa
- Laboratoire des Produits Naturels d'Origine Végétale et de Synthèse Organique, Faculté des Sciences Exactes, Campus de Chaabat Ersas; Université des frères Mentouri-Constantine; Constantine 25000 Algeria
| | - Mourad Chioua
- Instituto de Quimica Organica General; Spanish National Research Council; CSIC at C/Serrano, 117 28006 Madrid Spain
| | - Ali Belfaitah
- Laboratoire des Produits Naturels d'Origine Végétale et de Synthèse Organique, Faculté des Sciences Exactes, Campus de Chaabat Ersas; Université des frères Mentouri-Constantine; Constantine 25000 Algeria
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Nagaraju V, Purnachander D, Mangina NSVMR, Suresh S, Sridhar B, Karunakar GV. Reaction of β-enaminones and acetylene dicarboxylates: synthesis of substituted 1,2-dihydropyridinones. Org Biomol Chem 2015; 13:3011-23. [DOI: 10.1039/c4ob01578a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of dihydropyridinones was achieved by reaction of β-enaminones with acetylene dicarboxylates without using transition metal/catalyst.
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Affiliation(s)
- Vemu Nagaraju
- Crop Protection Chemicals Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Dalovai Purnachander
- Crop Protection Chemicals Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
- Academy of Scientific and Innovative Research
| | - N. S. V. M. Rao Mangina
- Crop Protection Chemicals Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
- Academy of Scientific and Innovative Research
| | - Surisetti Suresh
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | | | - Galla V. Karunakar
- Crop Protection Chemicals Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
- Academy of Scientific and Innovative Research
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Fei X, Yuan Y, Lee YM, Jeong KW, Seo SY. Synthesis, Biological Evaluation of SPF-32629A-Based 2- and 4-Pyridone Analogs as Chymase Inhibitors. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.8.2547] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Patel BH, Mason AM, Barrett AGM. Synthesis of 6-Substituted-4-Hydroxy-2-pyridinones via Intramolecular Ketene Trapping of Functionalized Enamine-Dioxinones. Org Lett 2011; 13:5156-9. [DOI: 10.1021/ol202028t] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bhavesh H. Patel
- Department of Chemistry, Imperial College, London SW7 2AZ, U.K., and GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage, Herts SG1 2NY, U.K
| | - Andrew M. Mason
- Department of Chemistry, Imperial College, London SW7 2AZ, U.K., and GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage, Herts SG1 2NY, U.K
| | - Anthony G. M. Barrett
- Department of Chemistry, Imperial College, London SW7 2AZ, U.K., and GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage, Herts SG1 2NY, U.K
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SPF32629A and SPF32629B: enantioselective synthesis, determination of absolute configuration, cytotoxicity and antibacterial evaluation. Eur J Med Chem 2011; 46:1803-12. [PMID: 21397370 DOI: 10.1016/j.ejmech.2011.02.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Revised: 02/14/2011] [Accepted: 02/15/2011] [Indexed: 11/23/2022]
Abstract
We report herein an efficient enantioselective synthesis of SPF32629A and SPF32629B through one-pot enantioselective reduction and protecting-group-free regioselective O-acylation strategy. The absolute configuration of the enantiomerically pure isomers was established by Mosher ester analysis. The inhibitory potencies of the synthesized compounds were assayed in vitro against a panel of microorganisms and against A549 human lung adenocarcinoma cell line. Compounds 2, 11 and 12 displayed moderate to potent antibacterial activity against all the tested strains and compounds 7, 8, 2, 11 and 12 exhibited significant cytotoxicity in a dose-dependent manner with an IC50 values ranging from 2.92 to 4.14 μg/ml and 8-11 μM.
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The first total synthesis of potent human chymase inhibitor SPF32629B via regioselective bromination and O-acylation strategy. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.03.091] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Vegi SR, Boovanahalli SK, Sharma AP, Mukkanti K. The first total synthesis of novel human chymase inhibitor SPF32629A. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.08.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Abstract
Mast cells (MCs) are traditionally thought of as a nuisance for its host, for example, by causing many of the symptoms associated with allergic reactions. In addition, recent research has put focus on MCs for displaying harmful effects during various autoimmune disorders. On the other hand, MCs can also be beneficial for its host, for example, by contributing to the defense against insults such as bacteria, parasites, and snake venom toxins. When the MC is challenged by an external stimulus, it may respond by degranulation. In this process, a number of powerful preformed inflammatory "mediators" are released, including cytokines, histamine, serglycin proteoglycans, and several MC-specific proteases: chymases, tryptases, and carboxypeptidase A. Although the exact effector mechanism(s) by which MCs carry out their either beneficial or harmful effects in vivo are in large parts unknown, it is reasonable to assume that these mediators may contribute in profound ways. Among the various MC mediators, the exact biological function of the MC proteases has for a long time been relatively obscure. However, recent progress involving successful genetic targeting of several MC protease genes has generated powerful tools, which will enable us to unravel the role of the MC proteases both in normal physiology as well as in pathological settings. This chapter summarizes the current knowledge of the biology of the MC proteases.
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Affiliation(s)
- Gunnar Pejler
- Department of Anatomy, Physiology and Biochemistry, The Biomedical Centre, Swedish University of Agricultural Sciences, Uppsala, Sweden
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