1
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Moynihan E, Mackey K, Blaskovich MAT, Reen FJ, McGlacken G. N-Alkyl-2-Quinolonopyrones Demonstrate Antimicrobial Activity against ESKAPE Pathogens Including Staphylococcus aureus. ACS Med Chem Lett 2022; 13:1358-1362. [PMID: 35978679 PMCID: PMC9377017 DOI: 10.1021/acsmedchemlett.2c00185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 07/08/2022] [Indexed: 11/28/2022] Open
Affiliation(s)
- Eoin Moynihan
- School of Chemistry and Analytical and Biological Chemistry Research Facility, University College Cork, Cork T12 YN60, Ireland
| | - Katrina Mackey
- School of Chemistry and Analytical and Biological Chemistry Research Facility, University College Cork, Cork T12 YN60, Ireland
| | - Mark A. T. Blaskovich
- Community for Open Antimicrobial Drug Discovery, Centre for Superbug Solutions, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - F. Jerry Reen
- School of Microbiology, University College Cork, Cork T12 K8AF, Ireland
| | - Gerard McGlacken
- School of Chemistry and Analytical and Biological Chemistry Research Facility, University College Cork, Cork T12 YN60, Ireland
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2
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Hickey A, Merz J, Al Mamari HH, Friedrich A, Marder TB, McGlacken GP. Iridium-Catalyzed Borylation of 6-Fluoroquinolines: Access to 6-Fluoroquinolones. J Org Chem 2022; 87:9977-9987. [PMID: 35839386 PMCID: PMC9368603 DOI: 10.1021/acs.joc.2c00973] [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] [Indexed: 11/28/2022]
Abstract
![]()
The Ir-catalyzed C–H borylation of fluoroquinolines
has
been realized. The quinoline boronic ester formed undergoes a range
of
important transformations of relevance to medicinal chemistry. Judicious
choice of the substituent at C4 on the quinoline facilitated the unmasking
of a fluoroquinolone—the core structure of many antibiotics.
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Affiliation(s)
- Aobha Hickey
- School of Chemistry & Analytical and Biological Chemistry Research Facility, University College Cork, Cork T12 YN60, Ireland
| | - Julia Merz
- Institute for Inorganic Chemistry, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Hamad H Al Mamari
- Institute for Inorganic Chemistry, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.,Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, Al Khoudh 123 Muscat, Sultanate of Oman
| | - Alexandra Friedrich
- Institute for Inorganic Chemistry, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Todd B Marder
- Institute for Inorganic Chemistry, and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Gerard P McGlacken
- School of Chemistry & Analytical and Biological Chemistry Research Facility, University College Cork, Cork T12 YN60, Ireland.,Synthesis and Solid State Pharmaceutical Centre, University College Cork, Cork T12 YN60, Ireland
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3
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Xu S, Nishimura K, Saito K, Hirano K, Miura M. Palladium-catalysed C–H arylation of benzophospholes with aryl halides. Chem Sci 2022; 13:10950-10960. [PMID: 36320684 PMCID: PMC9491221 DOI: 10.1039/d2sc04311d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 08/30/2022] [Indexed: 12/03/2022] Open
Abstract
A palladium-catalysed C–H arylation of benzophospholes with aryl halides has been developed. The reaction with aryl iodides and bromides proceeds well even under phosphine ligand-free Pd(OAc)2 catalysis whereas the Pd(PCy3)2 is effective for the coupling with less reactive aryl chlorides. The optimal conditions are also applicable to the double arylations with organic dihalides and annulation reaction with ortho-dihalogenated benzenes, making the corresponding benzophosphole-based acceptor–donor–acceptor-type molecules and highly condensed heteroacene-type molecules of potent interest in materials chemistry. Although there are many reports of catalytic C–H functionalisations of related benzoheteroles such as indoles, benzothiophenes, and benzofurans, this is the first successful example of the catalytic direct C–H transformation of benzophospholes, to the best of our knowledge. The preliminary optoelectronic properties of some newly synthesized benzophosphole derivatives are also investigated. A palladium-catalysed C–H arylation of benzophospholes with aryl halides has been developed to form the corresponding acceptor–donor–acceptor-type molecules and highly condensed heteroacene-type molecules of potent interest in material chemistry.![]()
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Affiliation(s)
- Shibo Xu
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University Suita Osaka 565-0871 Japan
| | - Kazutoshi Nishimura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita Osaka 565-0871 Japan
| | - Kosuke Saito
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita Osaka 565-0871 Japan
| | - Koji Hirano
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University Suita Osaka 565-0871 Japan
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita Osaka 565-0871 Japan
| | - Masahiro Miura
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University Suita Osaka 565-0871 Japan
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4
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Dobler D, Leitner M, Moor N, Reiser O. 2‐Pyrone – A Privileged Heterocycle and Widespread Motif in Nature. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101112] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Daniel Dobler
- Institut für Organische Chemie Universität Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Michael Leitner
- Institut für Organische Chemie Universität Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Natalija Moor
- Institut für Organische Chemie Universität Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Oliver Reiser
- Institut für Organische Chemie Universität Regensburg Universitätsstr. 31 93053 Regensburg Germany
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5
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Hickey A, Pardo LM, Reen FJ, McGlacken GP. Pyrones Identified as LuxR Signal Molecules in Photorhabdus and Their Synthetic Analogues Can Alter Multicellular Phenotypic Behavior of Bacillus atropheaus. ACS OMEGA 2021; 6:33141-33148. [PMID: 34901665 PMCID: PMC8655920 DOI: 10.1021/acsomega.1c05508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 11/10/2021] [Indexed: 06/14/2023]
Abstract
Individual bacteria communicate by the release and interpretation of small molecules, a phenomenon known as quorum sensing (QS). We hypothesized that QS compounds extruded by Photorhabdus could be interpreted by Bacillus-a form of interspecies communication. We interrogate the structure-activity relationship within the recently discovered pyrone QS network and reveal the exquisite structural features required for targeted phenotypic behavior. The interruption of QS is an exciting, nonbiocidal approach to tackling infection, and understanding its nuances can only be achieved by studies such as this.
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Affiliation(s)
- Aobha Hickey
- School
of Chemistry, Analytical and Biological Chemistry Research
Facility, School of Microbiology, Synthesis and Solid State Pharmaceutical Centre, University College Cork, Cork T12 YN60, Ireland
| | - Leticia M. Pardo
- School
of Chemistry, Analytical and Biological Chemistry Research
Facility, School of Microbiology, Synthesis and Solid State Pharmaceutical Centre, University College Cork, Cork T12 YN60, Ireland
| | - F. Jerry Reen
- School
of Chemistry, Analytical and Biological Chemistry Research
Facility, School of Microbiology, Synthesis and Solid State Pharmaceutical Centre, University College Cork, Cork T12 YN60, Ireland
| | - Gerard P. McGlacken
- School
of Chemistry, Analytical and Biological Chemistry Research
Facility, School of Microbiology, Synthesis and Solid State Pharmaceutical Centre, University College Cork, Cork T12 YN60, Ireland
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6
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Cheng D, Meng X, Wang D, Zhao X, Wang Y, Ji Z. A palladium-catalyzed cascade approach for the synthesis of 3,3a,4,6,7,8,9,9a-octahydro-1H-benzo[f]isoindole-1,5(2H)-diones. JOURNAL OF CHEMICAL RESEARCH 2021. [DOI: 10.1177/17475198211058653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A synthetic method for the preparation of 3,3a,4,6,7,8,9,9a-octahydro-1 H-benzo[ f]isoindole-1,5(2 H)-diones from 1,6-dienes and vinyl iodides is developed using PdCl2(PPh3)2 as the catalyst. The presented approach exhibits a good functional group tolerance and affords moderate yields of the products. A mechanism is also proposed.
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Affiliation(s)
- Dong Cheng
- Department of Chemical and Material Engineering, Chaohu College, Chaohu, PR China
| | - Xiangzhen Meng
- Department of Chemical and Material Engineering, Chaohu College, Chaohu, PR China
| | - Dan Wang
- Department of Chemical and Material Engineering, Chaohu College, Chaohu, PR China
| | - Xuan Zhao
- Department of Chemical and Material Engineering, Chaohu College, Chaohu, PR China
| | - Yusheng Wang
- Department of Chemical and Material Engineering, Chaohu College, Chaohu, PR China
| | - Zhiyu Ji
- Department of Chemical and Material Engineering, Chaohu College, Chaohu, PR China
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7
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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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8
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Mackey K, Jones DJ, Pardo LM, McGlacken GP. Quinoline Ligands Improve the Classic Direct C−H Functionalisation/Intramolecular Cyclisation of Diaryl Ethers to Dibenzofurans. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Katrina Mackey
- School of Chemistry University College Cork T12 YN60 Cork Ireland
- Analytical and Biological Chemistry Research Facility (ABCRF) University College Cork T12 YN60 Cork Ireland
| | - David J. Jones
- School of Chemistry University College Cork T12 YN60 Cork Ireland
- Analytical and Biological Chemistry Research Facility (ABCRF) University College Cork T12 YN60 Cork Ireland
| | - Leticia M. Pardo
- School of Chemistry University College Cork T12 YN60 Cork Ireland
- Analytical and Biological Chemistry Research Facility (ABCRF) University College Cork T12 YN60 Cork Ireland
| | - Gerard P. McGlacken
- School of Chemistry University College Cork T12 YN60 Cork Ireland
- Analytical and Biological Chemistry Research Facility (ABCRF) University College Cork T12 YN60 Cork Ireland
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9
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Katsina T, Papoulidou KE, Zografos AL. Umpolung-like Cross-coupling of Tosylhydrazones with 4-Hydroxy-2-pyridones under Palladium Catalysis. Org Lett 2019; 21:8110-8115. [DOI: 10.1021/acs.orglett.9b03119] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Tania Katsina
- Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
| | | | - Alexandros L. Zografos
- Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
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10
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Silva VLM, Silva AMS. Palladium-Catalysed Synthesis and Transformation of Quinolones. Molecules 2019; 24:E228. [PMID: 30634524 PMCID: PMC6359680 DOI: 10.3390/molecules24020228] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 12/31/2018] [Accepted: 01/04/2019] [Indexed: 11/16/2022] Open
Abstract
Palladium-catalysed reactions have had a large impact on synthetic organic chemistry and have found many applications in target-oriented synthesis. Their widespread use in organic synthesis is due to the mild conditions associated with the reactions together with their tolerance of a wide range of functional groups. Moreover, these types of reactions allow the rapid construction of complex molecules through multiple bond-forming reactions in a single step, the so-called tandem processes. Pd-catalysed reactions have been applied to the synthesis of a large number of natural products and bioactive compounds, some of them of complex molecular structures. This review article aims to present an overview of the most important Pd-catalysed reactions employed in the synthesis and transformations of quinolin-2(1H)-ones and quinolin-4(1H)-ones. These compounds are widely recognized by their diverse bioactivity, being privileged structures in medicinal chemistry and useful structural moieties for the development of new drug candidates. Furthermore, they hold significant interest due to their host⁻guest chemistry; applications in chemical, biochemical and environmental analyses and use in the development of new synthetic methods. In some cases, the quinolone formation step cannot be ascribed to a claimed Pd-catalysed reaction but this reaction is crucial to get the appropriate substrate for cyclization into the quinolone. Herein we present and discuss different economical, efficient and selective synthetic strategies to access quinolone-type compounds.
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Affiliation(s)
- Vera L M Silva
- Department of Chemistry QOPNA and LAQV-REQUIMTE, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Artur M S Silva
- Department of Chemistry QOPNA and LAQV-REQUIMTE, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
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11
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Obydennov DL, El-Tantawy AI, Sosnovskikh VY. Triacetic acid lactone as a bioprivileged molecule in organic synthesis. MENDELEEV COMMUNICATIONS 2019. [DOI: 10.1016/j.mencom.2019.01.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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12
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Shanahan RM, Hickey A, Reen FJ, O'Gara F, McGlacken GP. Synthesis of Benzofuroquinolines via Phosphine-Free Direct Arylation of 4-Phenoxyquinolines in Air. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800923] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Rachel M. Shanahan
- Analytical and Biological Research Facility (ABCRF) & School of Chemistry; University College Cork; Cork Ireland
| | - Aobha Hickey
- Analytical and Biological Research Facility (ABCRF) & School of Chemistry; University College Cork; Cork Ireland
| | - F. Jerry Reen
- School of Microbiology; University College Cork; Cork Ireland
| | - Fergal O'Gara
- BIOMERIT Research Centre; School of Microbiology; University College Cork; Cork Ireland
- School of Biomedical Sciences; Curtin Health Innovation Research Institute; Curtin University; 6102 Perth WA Australia
| | - Gerard P. McGlacken
- Analytical and Biological Research Facility (ABCRF) & School of Chemistry; University College Cork; Cork Ireland
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13
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Prendergast AM, McGlacken GP. Transition Metal Mediated C-H Activation of 2-Pyrones, 2-Pyridones, 2-Coumarins and 2-Quinolones. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800299] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Aisling M. Prendergast
- School of Chemistry and Analytical & Biological Chemistry Research Facility (ABCRF); University College Cork; Cork Ireland
| | - Gerard P. McGlacken
- School of Chemistry and Analytical & Biological Chemistry Research Facility (ABCRF); University College Cork; Cork Ireland
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14
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Xu LC, Zhou P, Li JZ, Hao WJ, Tu SJ, Jiang B. Thiazolium salt-catalyzed [3 + 2 + 1] cyclization for the synthesis of trisubstituted 2-pyrones using arylglyoxals as a carbonyl source. Org Chem Front 2018. [DOI: 10.1039/c7qo00899f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new thiazolium salt-catalyzed [3 + 2 + 1] cyclization of acetylenedicarboxylates with arylglyoxals has been developed, enabling organocatalytic umpolung to access trisubstituted 2-pyrones with good yields via C–C bond cleavage.
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Affiliation(s)
- Li-Chen Xu
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Peng Zhou
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Jia-Zhuo Li
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Wen-Juan Hao
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Bo Jiang
- School of Chemistry & Materials Science
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
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15
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Prendergast AM, Pardo LM, Fairlamb IJS, McGlacken GP. Access to Some C5-Cyclised 2-Pyrones and 2-Pyridones via Direct Arylation; Retention of Chloride as a Synthetic Handle. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700980] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Aisling M. Prendergast
- School of Chemistry and Analytical & Biological Chemistry Research Facility; University College Cork; Cork Ireland
| | - Leticia M. Pardo
- School of Chemistry and Analytical & Biological Chemistry Research Facility; University College Cork; Cork Ireland
| | - Ian J. S. Fairlamb
- Department of Chemistry; University of York; YO10 5DD York United Kingdom
| | - Gerard P. McGlacken
- School of Chemistry and Analytical & Biological Chemistry Research Facility; University College Cork; Cork Ireland
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16
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Muimhneacháin EÓ, Pardo LM, Bateman LM, Rao Khandavilli UB, Lawrence SE, McGlacken GP. Intramolecular Direct Arylation of 1,3-Diketone-Derived Enol Ethers in a Synthesis of Tricyclic Oxoisochromene Derivatives. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700062] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Eoin Ó Muimhneacháin
- Department of Chemistry and Analytical and Biological Chemistry Research Facility; University College Cork; College Road Cork Ireland
| | - Leticia M. Pardo
- Department of Chemistry and Analytical and Biological Chemistry Research Facility; University College Cork; College Road Cork Ireland
| | - Lorraine M. Bateman
- Department of Chemistry and Analytical and Biological Chemistry Research Facility; University College Cork; College Road Cork Ireland
| | - U. B. Rao Khandavilli
- Department of Chemistry and Analytical and Biological Chemistry Research Facility; University College Cork; College Road Cork Ireland
| | - Simon E. Lawrence
- Department of Chemistry and Analytical and Biological Chemistry Research Facility; University College Cork; College Road Cork Ireland
| | - Gerard P. McGlacken
- Department of Chemistry and Analytical and Biological Chemistry Research Facility; University College Cork; College Road Cork Ireland
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17
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Pastor-Cavada E, Pardo LM, Kandil D, Torres-Fuentes C, Clarke SL, Shaban H, McGlacken GP, Schellekens H. A Novel Non-Peptidic Agonist of the Ghrelin Receptor with Orexigenic Activity In vivo. Sci Rep 2016; 6:36456. [PMID: 27819353 PMCID: PMC5098229 DOI: 10.1038/srep36456] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 10/17/2016] [Indexed: 01/13/2023] Open
Abstract
Loss of appetite in the medically ill and ageing populations is a major health problem and a significant symptom in cachexia syndromes, which is the loss of muscle and fat mass. Ghrelin is a gut-derived hormone which can stimulate appetite. Herein we describe a novel, simple, non-peptidic, 2-pyridone which acts as a selective agonist for the ghrelin receptor (GHS-R1a). The small 2-pyridone demonstrated clear agonistic activity in both transfected human cells and mouse hypothalamic cells with endogenous GHS-R1a receptor expression. In vivo tests with the hit compound showed significant increased food intake following peripheral administration, which highlights the potent orexigenic effect of this novel GHS-R1a receptor ligand.
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Affiliation(s)
- Elena Pastor-Cavada
- Alimentary Pharmabiotic Centre (APC) Microbiome Institute, University College Cork, Cork, Ireland
| | - Leticia M Pardo
- Department of Chemistry and the Analytical and Biological Chemistry Research Facility (ABCRF), University College Cork, Cork, Ireland
| | - Dalia Kandil
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland
| | - Cristina Torres-Fuentes
- Alimentary Pharmabiotic Centre (APC) Microbiome Institute, University College Cork, Cork, Ireland
| | - Sarah L Clarke
- Department of Chemistry and the Analytical and Biological Chemistry Research Facility (ABCRF), University College Cork, Cork, Ireland
| | - Hamdy Shaban
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland
| | - Gerard P McGlacken
- Department of Chemistry and the Analytical and Biological Chemistry Research Facility (ABCRF), University College Cork, Cork, Ireland
| | - Harriet Schellekens
- Alimentary Pharmabiotic Centre (APC) Microbiome Institute, University College Cork, Cork, Ireland.,Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland
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18
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Guo S, Gong J, Zhu Z, Yu L, Wang Y, Huang L, Cai H. Copper-catalyzed Phosphorylation of Coumarins with Trialkyl Phosphites. CHEM LETT 2016. [DOI: 10.1246/cl.160305] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Mackey K, Pardo LM, Prendergast AM, Nolan MT, Bateman LM, McGlacken GP. Cyclization of 4-Phenoxy-2-coumarins and 2-Pyrones via a Double C–H Activation. Org Lett 2016; 18:2540-3. [DOI: 10.1021/acs.orglett.6b00751] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Katrina Mackey
- Department of Chemistry and Analytical & Biological Chemistry Research Facility, University College Cork, College Road, Cork, Ireland
| | - Leticia M. Pardo
- Department of Chemistry and Analytical & Biological Chemistry Research Facility, University College Cork, College Road, Cork, Ireland
| | - Aisling M. Prendergast
- Department of Chemistry and Analytical & Biological Chemistry Research Facility, University College Cork, College Road, Cork, Ireland
| | - Marie-T. Nolan
- Department of Chemistry and Analytical & Biological Chemistry Research Facility, University College Cork, College Road, Cork, Ireland
| | - Lorraine M. Bateman
- Department of Chemistry and Analytical & Biological Chemistry Research Facility, University College Cork, College Road, Cork, Ireland
| | - Gerard P. McGlacken
- Department of Chemistry and Analytical & Biological Chemistry Research Facility, University College Cork, College Road, Cork, Ireland
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20
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Pérez JM, Cano R, McGlacken GP, Ramón DJ. Palladium(ii) oxide impregnated on magnetite as a catalyst for the synthesis of 4-arylcoumarins via a Heck-arylation/cyclization process. RSC Adv 2016. [DOI: 10.1039/c6ra01731b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Heck-arylation/cyclization was achieved using heterogeneous palladium(ii) oxide impregnated on magnetite catalyst (2.5 mol%) with a lower catalyst loading than that reported for similar processes.
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Affiliation(s)
- Juana M. Pérez
- Instituto de Síntesis Orgánica (ISO) and Departamento de Química Orgánica
- Facultad de Ciencias
- Universidad de Alicante
- E-03080-Alicante
- Spain
| | - Rafael Cano
- Department of Chemistry and Analytical & Biological Chemistry Research Facility (ABCRF)
- University College Cork
- Ireland
| | - Gerard P. McGlacken
- Department of Chemistry and Analytical & Biological Chemistry Research Facility (ABCRF)
- University College Cork
- Ireland
| | - Diego J. Ramón
- Instituto de Síntesis Orgánica (ISO) and Departamento de Química Orgánica
- Facultad de Ciencias
- Universidad de Alicante
- E-03080-Alicante
- Spain
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22
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Ruch AA, Handa S, Kong F, Nesterov VN, Pahls DR, Cundari TR, Slaughter LM. Competing amination and C–H arylation pathways in Pd/xantphos-catalyzed transformations of binaphthyl triflates: switchable routes to chiral amines and helicene derivatives. Org Biomol Chem 2016; 14:8123-40. [DOI: 10.1039/c6ob01102k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A Pd(OAc)2/xantphos catalyst system can be tuned to promote either amination or C–H arylation of hindered binaphthyl 2-triflates, with xantphos's hemilability playing a key role.
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Affiliation(s)
- Aaron A. Ruch
- Department of Chemistry
- University of North Texas
- Denton
- USA
| | - Sachin Handa
- Department of Chemistry
- Oklahoma State University Stillwater
- Oklahoma
- USA
| | - Fanji Kong
- Department of Chemistry
- University of North Texas
- Denton
- USA
| | | | - Dale R. Pahls
- Department of Chemistry
- University of North Texas
- Denton
- USA
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23
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Nolan MT, Pardo LM, Prendergast AM, McGlacken GP. Intramolecular Direct Arylation of 3-Halo-2-pyrones and 2-Coumarins. J Org Chem 2015; 80:10904-13. [DOI: 10.1021/acs.joc.5b02027] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Marie-T. Nolan
- Department of Chemistry and
Analytical and Biological Chemistry Research Facility, University College Cork, College Road, Cork, Ireland
| | - Leticia M. Pardo
- Department of Chemistry and
Analytical and Biological Chemistry Research Facility, University College Cork, College Road, Cork, Ireland
| | - Aisling M. Prendergast
- Department of Chemistry and
Analytical and Biological Chemistry Research Facility, University College Cork, College Road, Cork, Ireland
| | - Gerard P. McGlacken
- Department of Chemistry and
Analytical and Biological Chemistry Research Facility, University College Cork, College Road, Cork, Ireland
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25
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Pardo LM, Prendergast AM, Nolan MT, Ó Muimhneacháin E, McGlacken GP. Pd/Pivalic Acid Mediated Direct Arylation of 2-Pyrones and Related Heterocycles. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500262] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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26
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Lah HU, Rasool F, Yousuf SK. Palladium catalyzed C(sp2)–C(sp2) bond formation. A highly regio- and chemoselective oxidative Heck C-3 alkenylation of pyrones and pyridones. RSC Adv 2015. [DOI: 10.1039/c5ra12631b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Palladium catalysed ligand free highly regio- and chemoselective dehydrogenative C-3 alkenylation of pyrones and unprotected pyridones from unactivated alkenes is reported. Simple reaction conditions and broad substrate scope make the process useful.
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Affiliation(s)
- Hafiz Ul Lah
- Medicinal Chemistry Division
- Indian Institute of Integrative Medicine (CSIR-India)
- Srinagar-190005
- India
| | - Faheem Rasool
- Medicinal Chemistry Division
- Indian Institute of Integrative Medicine (CSIR-India)
- Srinagar-190005
- India
| | - Syed Khalid Yousuf
- Medicinal Chemistry Division
- Indian Institute of Integrative Medicine (CSIR-India)
- Srinagar-190005
- India
- AcSIR-India
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