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Liu Y, Wang Z, Li R, Yao Y, Shi Z, Sun Q, Deng G. Recent Progress in Free Radical Transformations of Allenamides. Curr Org Synth 2024; 21:889-902. [PMID: 39044703 DOI: 10.2174/0115701794269961231027054854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 09/16/2023] [Accepted: 09/28/2023] [Indexed: 07/25/2024]
Abstract
Allenamides are special allenes, and the unique reactivity, selectivity (both stereoselective and regionally selective) and stability of allenamides have been widely studied. In this review, the development of the free radical transformation of allenamides over the last few years will be summarized. This review discusses in detail in three parts: intermolecular radical addition to C- X (X = N, S, O, Se) bonds, metal salt mediated cyclization of allenamides, and photocatalytic cyclization of allenamides. In addition, reasonable details of the mechanisms are provided for the vast majority of these transformations.
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Affiliation(s)
- Yongchun Liu
- College of Energy Chemicals and Environment, Sichuan Vocational and Technical College, Suining 629200, People's Republic of China
| | - Zimin Wang
- College of Energy Chemicals and Environment, Sichuan Vocational and Technical College, Suining 629200, People's Republic of China
| | - Rui Li
- College of Energy Chemicals and Environment, Sichuan Vocational and Technical College, Suining 629200, People's Republic of China
| | - Yinhai Yao
- College of Energy Chemicals and Environment, Sichuan Vocational and Technical College, Suining 629200, People's Republic of China
| | - Zhichuan Shi
- College of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, People's Republic of China
| | - Qin Sun
- College of Chemistry and Life Science, Chengdu Normal University, Chengdu 611130, People's Republic of China
| | - Guowei Deng
- College of Chemistry and Life Science, Chengdu Normal University, Chengdu 611130, People's Republic of China
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2
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Bagán A, Rodriguez-Arévalo S, Taboada-Jara T, Griñán-Ferré C, Pallàs M, Brocos-Mosquera I, Callado LF, Morales-García JA, Pérez B, Diaz C, Fernández-Godino R, Genilloud O, Beljkas M, Oljacic S, Nikolic K, Escolano C. Preclinical Evaluation of an Imidazole-Linked Heterocycle for Alzheimer's Disease. Pharmaceutics 2023; 15:2381. [PMID: 37896141 PMCID: PMC10610545 DOI: 10.3390/pharmaceutics15102381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/14/2023] [Accepted: 09/16/2023] [Indexed: 10/29/2023] Open
Abstract
Humanity is facing a vast prevalence of neurodegenerative diseases, with Alzheimer's disease (AD) being the most dominant, without efficacious drugs, and with only a few therapeutic targets identified. In this scenario, we aim to find molecular entities that modulate imidazoline I2 receptors (I2-IRs) that have been pointed out as relevant targets in AD. In this work, we explored structural modifications of well-established I2-IR ligands, giving access to derivatives with an imidazole-linked heterocycle as a common key feature. We report the synthesis, the affinity in human I2-IRs, the brain penetration capabilities, the in silico ADMET studies, and the three-dimensional quantitative structure-activity relationship (3D-QSAR) studies of this new bunch of I2-IR ligands. Selected compounds showed neuroprotective properties and beneficial effects in an in vitro model of Parkinson's disease, rescued the human dopaminergic cell line SH-SY5Y from death after treatment with 6-hydroxydopamine, and showed crucial anti-inflammatory effects in a cellular model of neuroinflammation. After a preliminary pharmacokinetic study, we explored the action of our representative 2-(benzo[b]thiophen-2-yl)-1H-imidazole LSL33 in a mouse model of AD (5xFAD). Oral administration of LSL33 at 2 mg/Kg for 4 weeks ameliorated 5XFAD cognitive impairment and synaptic plasticity, as well as reduced neuroinflammation markers. In summary, this new I2-IR ligand that promoted beneficial effects in a well-established AD mouse model should be considered a promising therapeutic strategy for neurodegeneration.
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Affiliation(s)
- Andrea Bagán
- Laboratory of Medicinal Chemistry (Associated Unit to CSIC), Department of Pharmacology, Toxicology and Medicinal Chemistry, Faculty of Pharmacy and Food Sciences, Institute of Biomedicine (IBUB), University of Barcelona, Av. Joan XXIII, 27-31, 08028 Barcelona, Spain; (A.B.); (S.R.-A.)
| | - Sergio Rodriguez-Arévalo
- Laboratory of Medicinal Chemistry (Associated Unit to CSIC), Department of Pharmacology, Toxicology and Medicinal Chemistry, Faculty of Pharmacy and Food Sciences, Institute of Biomedicine (IBUB), University of Barcelona, Av. Joan XXIII, 27-31, 08028 Barcelona, Spain; (A.B.); (S.R.-A.)
| | - Teresa Taboada-Jara
- Pharmacology Section, Toxicology and Medicinal Chemistry, Faculty of Pharmacy and Food Sciences, Institut de Neurociències, University of Barcelona, Av. Joan XXIII, 27-31, 08028 Barcelona, Spain; (T.T.-J.); (C.G.-F.); (M.P.)
| | - Christian Griñán-Ferré
- Pharmacology Section, Toxicology and Medicinal Chemistry, Faculty of Pharmacy and Food Sciences, Institut de Neurociències, University of Barcelona, Av. Joan XXIII, 27-31, 08028 Barcelona, Spain; (T.T.-J.); (C.G.-F.); (M.P.)
- Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas (CiberNed), National Institute of Health Carlos III, 28029 Madrid, Spain
| | - Mercè Pallàs
- Pharmacology Section, Toxicology and Medicinal Chemistry, Faculty of Pharmacy and Food Sciences, Institut de Neurociències, University of Barcelona, Av. Joan XXIII, 27-31, 08028 Barcelona, Spain; (T.T.-J.); (C.G.-F.); (M.P.)
- Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas (CiberNed), National Institute of Health Carlos III, 28029 Madrid, Spain
| | - Iria Brocos-Mosquera
- Department of Pharmacology, University of the Basque Country, UPV/EHU, 48940 Leioa, Spain; (I.B.-M.); (L.F.C.)
- Centro de Investigación Biomédica en Red de Salud Mental, CIBERSAM, 28029 Madrid, Spain
| | - Luis F. Callado
- Department of Pharmacology, University of the Basque Country, UPV/EHU, 48940 Leioa, Spain; (I.B.-M.); (L.F.C.)
- Centro de Investigación Biomédica en Red de Salud Mental, CIBERSAM, 28029 Madrid, Spain
- Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Spain
| | - José A. Morales-García
- Department of Cell Biology, School of Medicine, Complutense University (UCM), 28040 Madrid, Spain;
| | - Belén Pérez
- Department of Pharmacology, Therapeutic and Toxicology, Autonomous University of Barcelona, 08193 Cerdanyola, Spain;
| | - Caridad Diaz
- Fundación MEDINA Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Avda. del Conocimiento 34, 18016 Armilla, Spain; (C.D.); (R.F.-G.); (O.G.)
| | - Rosario Fernández-Godino
- Fundación MEDINA Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Avda. del Conocimiento 34, 18016 Armilla, Spain; (C.D.); (R.F.-G.); (O.G.)
| | - Olga Genilloud
- Fundación MEDINA Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Avda. del Conocimiento 34, 18016 Armilla, Spain; (C.D.); (R.F.-G.); (O.G.)
| | - Milan Beljkas
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11221 Belgrade, Serbia; (M.B.); (S.O.); (K.N.)
| | - Slavica Oljacic
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11221 Belgrade, Serbia; (M.B.); (S.O.); (K.N.)
| | - Katarina Nikolic
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, 11221 Belgrade, Serbia; (M.B.); (S.O.); (K.N.)
| | - Carmen Escolano
- Laboratory of Medicinal Chemistry (Associated Unit to CSIC), Department of Pharmacology, Toxicology and Medicinal Chemistry, Faculty of Pharmacy and Food Sciences, Institute of Biomedicine (IBUB), University of Barcelona, Av. Joan XXIII, 27-31, 08028 Barcelona, Spain; (A.B.); (S.R.-A.)
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3
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Dattatri, Singam MKR, Nanubolu JB, Reddy MS. Cu-Catalyzed tandem cyclization and coupling of enynones with enaminones for multisubstituted furans & furano-pyrroles. Org Biomol Chem 2022; 20:6363-6367. [PMID: 35861157 DOI: 10.1039/d2ob00839d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A synthetic strategy that efficiently constructs complex molecular diversity in a few steps will always be embraced by organic chemists. Here, we report a cascade reaction of enynones with enaminones via carbene insertion and aryl migration to engineer distinctive multisubstituted furans with an all-carbon quaternary center, and could extend the protocol in the same pot towards furano-pyrrole bis-heterocycles. Heterogeneity of this protocol was proved with the upshot of divergent chemical space under a relatively mild reaction environment.
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Affiliation(s)
- Dattatri
- Department of OSPC, CSIR-Indian Institute of Chemical Technology, Habsiguda, Hyderabad 500007, India. .,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | - Maneesh Kumar Reddy Singam
- Department of OSPC, CSIR-Indian Institute of Chemical Technology, Habsiguda, Hyderabad 500007, India. .,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | | | - Maddi Sridhar Reddy
- Department of OSPC, CSIR-Indian Institute of Chemical Technology, Habsiguda, Hyderabad 500007, India. .,Academy of Scientific and Innovative Research, Ghaziabad 201002, India
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4
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Hisana KN, Afsina CMA, Anilkumar G. Copper-catalyzed N-arylation of indoles. CURR ORG CHEM 2022. [DOI: 10.2174/1385272826666220527140651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
Over the past decades, the N-arylation of indoles has gained an inevitable role in the fields of material science, pharmaceuticals, and agrochemical industries. They are the basic core skeleton of many natural products. Their synthesis by Ullmann-type C–N coupling reaction of indole derivatives with aryl halides through various catalytic protocols is well explored. Transition metal catalysis was the best method for synthesizing 1-aryl indoles, and copper catalysis is the leading among them. This review comprehends the recent developments in the copper-catalyzed C–N cross-coupling of indoles with aryl halides from 2010 to 2022.
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Affiliation(s)
| | - C M A Afsina
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P O, Kottayam, Kerala, INDIA
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P O, Kottayam, Kerala, INDIA
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5
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Dong J, Hu J, Liu X, Sun S, Bao L, Jia M, Xu X. Ionic Reactivity of 2-Isocyanoaryl Thioethers: Access to 2-Halo and 2-Aminobenzothia/Selenazoles. J Org Chem 2022; 87:2845-2852. [PMID: 35133836 DOI: 10.1021/acs.joc.1c02747] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
An ionic cascade insertion/cyclization reaction of thia-/selena-functionalized arylisocyanides has been successfully developed for the efficient and practical synthesis of 2-halobenzothiazole/benzoselenazole derivatives. This synthetic protocol, incorporating a halogen atom when forming the five-membered ring of benzothia/selenazoles, is different from the existing ones, where halogenation of the preformed benzothia/selenazole precursors happens. Additionally, a facile access to 2-aminobenzothiazoles is also achieved by the one-pot cascade reaction of 2-isocyanoaryl thioethers, iodine, and amines.
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Affiliation(s)
- Jinhuan Dong
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, China
| | - Junlin Hu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, China
| | - Xiaoli Liu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, China
| | - Shaoguang Sun
- Medical College of Panzhihua University, Panzhihua, Sichuan 617000, China
| | - Lan Bao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, China
| | - Mengying Jia
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, China
| | - Xianxiu Xu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, China
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6
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Quintavalla A, Veronesi R, Speziali L, Martinelli A, Zaccheroni N, Mummolo L, Lombardo M. Allenamides Playing Domino: A Redox‐Neutral Photocatalytic Synthesis of Functionalized 2‐Aminofurans. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Arianna Quintavalla
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Ruben Veronesi
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Laura Speziali
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Ada Martinelli
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Nelsi Zaccheroni
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Liviana Mummolo
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
| | - Marco Lombardo
- Alma Mater Studiorum – University of Bologna Department of Chemistry “G. Ciamician” Via Selmi 2 40126 Bologna Italy
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7
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Rao MLN, Islam SS. Copper-catalyzed synthesis of 1-(2-benzofuryl)-N-heteroarenes from o-hydroxy- gem-(dibromovinyl)benzenes and N-heteroarenes. Org Biomol Chem 2021; 19:9076-9080. [PMID: 34622915 DOI: 10.1039/d1ob01765a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method for the synthesis of 1-(2-benzofuryl)-N-heteroarenes is developed from o-hydroxy-gem-(dibromovinyl)benzenes and N-heteroarenes under copper-catalyzed tandem reaction conditions. This methodology displayed a broad substrate scope and high yields in the preparation of a variety of 1-(2-benzofuryl)-N-heteroarenes. Further, 1-(2-benzofuryl)-N-heteroarenes were also applied in the synthesis of polycyclic benzofuro-indolo-pyridine scaffolds under palladium-catalyzed dehydrogenative coupling conditions. Overall, the present tandem approach is general, synthetically advantageous and avoids air-sensitive reagents.
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Affiliation(s)
- Maddali L N Rao
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208 016, India.
| | - Sk Shamim Islam
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208 016, India.
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8
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Ameur Messaoud MY, Bentabed-Ababsa G, Fajloun Z, Hamze M, Halauko YS, Ivashkevich OA, Matulis VE, Roisnel T, Dorcet V, Mongin F. Deprotometalation-Iodolysis and Direct Iodination of 1-Arylated 7-Azaindoles: Reactivity Studies and Molecule Properties. Molecules 2021; 26:6314. [PMID: 34684895 PMCID: PMC8537530 DOI: 10.3390/molecules26206314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/13/2021] [Accepted: 10/15/2021] [Indexed: 11/17/2022] Open
Abstract
Five protocols were first compared for the copper-catalyzed C-N bond formation between 7-azaindole and aryl/heteroaryl iodides/bromides. The 1-arylated 7-azaindoles thus obtained were subjected to deprotometalation-iodolysis sequences using lithium 2,2,6,6-tetramethylpiperidide as the base and the corresponding zinc diamide as an in situ trap. The reactivity of the substrate was discussed in light of the calculated atomic charges and the pKa values. The behavior of the 1-arylated 7-azaindoles in direct iodination was then studied, and the results explained by considering the HOMO orbital coefficients and the atomic charges. Finally, some of the iodides generated, generally original, were involved in the N-arylation of indole. While crystallographic data were collected for fifteen of the synthesized compounds, biological properties (antimicrobial, antifungal and antioxidant activity) were evaluated for others.
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Affiliation(s)
- Mohamed Yacine Ameur Messaoud
- Institut des Sciences Chimiques de Rennes–UMR 6226, University of Rennes, CNRS, ISCR, 35000 Rennes, France; (M.Y.A.M.); (T.R.); (V.D.)
- Laboratoire de Synthèse Organique Appliquée, Faculté des Sciences Exactes et Appliquées, Université d’Oran 1 Ahmed Ben Bella, BP 1524 El M’Naouer, Oran 31000, Algeria
| | - Ghenia Bentabed-Ababsa
- Laboratoire de Synthèse Organique Appliquée, Faculté des Sciences Exactes et Appliquées, Université d’Oran 1 Ahmed Ben Bella, BP 1524 El M’Naouer, Oran 31000, Algeria
| | - Ziad Fajloun
- Laboratory of Applied Biotechnology (LBA3B), Azm Center for Research in Biotechnology and Its Applications, EDST, Lebanese University, Tripoli 1300, Lebanon
- Faculty of Sciences 3, Campus Michel Slayman, Lebanese University, Tripoli 1352, Lebanon
| | - Monzer Hamze
- Laboratoire Microbiologie, Santé et Environnement, Doctoral School of Sciences and Technology, Faculty of Public Health, Lebanese University, Tripoli 1300, Lebanon;
| | - Yury S. Halauko
- UNESCO Chair of Belarusian State University, 220030 Minsk, Belarus
| | - Oleg A. Ivashkevich
- Research Institute for Physico-Chemical Problems, Belarusian State University, 220030 Minsk, Belarus; (O.A.I.); (V.E.M.)
| | - Vadim E. Matulis
- Research Institute for Physico-Chemical Problems, Belarusian State University, 220030 Minsk, Belarus; (O.A.I.); (V.E.M.)
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes–UMR 6226, University of Rennes, CNRS, ISCR, 35000 Rennes, France; (M.Y.A.M.); (T.R.); (V.D.)
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes–UMR 6226, University of Rennes, CNRS, ISCR, 35000 Rennes, France; (M.Y.A.M.); (T.R.); (V.D.)
| | - Florence Mongin
- Institut des Sciences Chimiques de Rennes–UMR 6226, University of Rennes, CNRS, ISCR, 35000 Rennes, France; (M.Y.A.M.); (T.R.); (V.D.)
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9
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Inoue K, Feng Y, Mori A, Okano K. "Snapshot" Trapping of Multiple Transient Azolyllithiums in Batch. Chemistry 2021; 27:10267-10273. [PMID: 33960030 DOI: 10.1002/chem.202101256] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Indexed: 12/23/2022]
Abstract
Recent developments in flow microreactor technology have allowed the use of transient organolithium compounds that cannot be realized in a batch reactor. However, trapping the transient aryllithiums in a "halogen dance" is still challenging. Herein is reported the trapping of such short-lived azolyllithiums in a batch reactor by developing a finely tuned in situ zincation using zinc halide diamine complexes. The reaction rate is controlled by the appropriate choice of diamine ligand. The reaction is operationally simple and can be performed at 0 °C with high reproducibility on a multigram scale. This method was applicable to a wide range of brominated azoles allowing deprotonative functionalization, which was used for the concise divergent syntheses of both constitutional isomers of biologically active azoles.
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Affiliation(s)
- Kengo Inoue
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan
| | - Yuxuan Feng
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan
| | - Atsunori Mori
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan.,Research Center for Membrane and Film Technology, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan
| | - Kentaro Okano
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe, 657-8501, Japan
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10
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A carbazole compound, 9-ethyl-9H-carbazole-3-carbaldehyde, plays an antitumor function through reactivation of the p53 pathway in human melanoma cells. Cell Death Dis 2021; 12:591. [PMID: 34103468 PMCID: PMC8187445 DOI: 10.1038/s41419-021-03867-6] [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: 02/04/2021] [Revised: 05/24/2021] [Accepted: 05/24/2021] [Indexed: 11/30/2022]
Abstract
p53, the major tumor suppressor, is frequently mutated in many cancers, and up to 84% of human melanomas harbor wild-type p53, which is considered to be an ideal target for melanoma therapy. Here, we evaluated the antitumor activity of a carbazole derivative, 9-ethyl-9H-carbazole-3-carbaldehyde (ECCA), on melanoma cells. ECCA had a selectively strong inhibitory activity against the growth of BRAF-mutated and BRAF-wild-type melanoma cells but had little effect on normal human primary melanocytes. ECCA inhibited melanoma cell growth by increasing cell apoptosis, which was associated with the upregulation of caspase activities and was significantly abrogated by the addition of a caspase inhibitor. In vivo assays confirmed that ECCA suppressed melanoma growth by enhancing cell apoptosis and reducing cell proliferation, and importantly ECCA did not have any evident toxic effects on normal tissues. RNA-Seq analysis identified several pathways related to cell apoptosis that were affected by ECCA, notably, activation of the p53 signaling pathway. Biochemical assays demonstrated that ECCA enhanced the phosphorylation of p53 at Ser15 in melanoma cells harboring wild-type p53, and importantly, the knockdown or deletion of p53 in those cells counteracted the ECCA-induced apoptosis, as well as senescence. Further investigations revealed that ECCA enhanced the phosphorylation of p38-MAPK and c-Jun N-terminal kinase (JNK), and treatment with either a p38-MAPK or a JNK inhibitor rescued the cell growth inhibition elicited by ECCA, which depended on the expression of the p53 gene. Finally, the combination of ECCA with a BRAF inhibitor significantly enhanced the growth inhibition of melanoma cells. In summary, our study demonstrates that the carbazole derivative, ECCA, induces melanoma cell apoptosis and senescence through the activation of p53 to significantly and selectively suppress the growth of melanoma cells without affecting normal human melanocytes, suggesting its potential to develop a new drug for melanoma therapy.
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11
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Abstract
The copper-catalyzed N-arylation of pyrroles has attracted great attention in organic synthesis due to its wide applications in medicinal chemistry, natural products, etc. Here, we summarize the overall advances in the copper-catalyzed C–N cross-coupling of pyrroles with aryl halides.
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Affiliation(s)
- Kalathingal Nasreen Hisana
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - C. M. A. Afsina
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
- Advanced Molecular Materials Research Centre (AMMRC), Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
- Institute for Integrated Programmes and Research in Basic Sciences (IIRBS), Mahatma Gandhi University, Priyadarsini Hills P O, Kottayam, Kerala, 686560, India
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12
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Yan X, Wen J, Zhou L, Fan L, Wang X, Xu Z. Current Scenario of 1,3-oxazole Derivatives for Anticancer Activity. Curr Top Med Chem 2020; 20:1916-1937. [PMID: 32579505 DOI: 10.2174/1568026620666200624161151] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 05/06/2020] [Accepted: 05/21/2020] [Indexed: 02/07/2023]
Abstract
Cancer, which has been cursed for human beings for long time is considered as one of the
leading causes of morbidity and mortality across the world. In spite of different types of treatments
available, chemotherapy is still deemed as a favored treatment for the cancer. Unfortunately, many currently
accessible anticancer agents have developed multidrug resistance along with fatal adverse effects.
Therefore, intensive efforts have been made to seek for new active drugs with improved anticancer efficacy
and reduced adverse effects. In recent years, the emergence of heterocyclic ring-containing anticancer
agents has gained a great deal of attention among medicinal chemists. 1,3- oxazole is a versatile
heterocyclic compound, and its derivatives possess broad-spectrum pharmacological properties, including
anticancer activity against both drug-susceptible, drug-resistant and even multidrug-resistant cancer
cell lines through multiple mechanisms. Thus, the 1,3-oxazole moiety is a useful template for the development
of novel anticancer agents. This review will provide a comprehensive overview of the recent
advances on 1,3-oxazole derivatives with potential therapeutic applications as anticancer agents, focus
on the chemical structures, anticancer activity, and mechanisms of action.
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Affiliation(s)
- Xinjia Yan
- Department of Pharmacy, The 967th Hospital of Joint Logistic Support Force of PLA, Dalian, China
| | - Jing Wen
- College of Pharmacy, Harbin University of Commerce, Harbin, China
| | - Lin Zhou
- Department of Pharmacy, The 967th Hospital of Joint Logistic Support Force of PLA, Dalian, China
| | - Lei Fan
- Department of Pharmacy, The 967th Hospital of Joint Logistic Support Force of PLA, Dalian, China
| | - Xiaobo Wang
- Department of Pharmacy, The 967th Hospital of Joint Logistic Support Force of PLA, Dalian, China
| | - Zhi Xu
- College of Pharmaceutical Sciences, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
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13
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Wang J, Li JH, Guo Y, Dong H, Liu Q, Yu XQ. TEMPO-Mediated C-H Amination of Benzoxazoles with N-Heterocycles. J Org Chem 2020; 85:12797-12803. [PMID: 32878444 DOI: 10.1021/acs.joc.0c01921] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The direct amination of benzoxazoles at C2 using N-heterocycles as nitrogen sources has been developed for the first time. Several kinds of inexpensive oxidants and also electricity were effective for this transformation in the presence of 2,2,6,6-tetramethylpiperidine-N-oxyl. This metal-free and operationally simple reaction can afford a variety of important C,N'-linked bis-heteocycles in moderate to good yields under very mild reaction conditions. The in situ generated oxoammonium salt was proved to be important for this transformation.
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Affiliation(s)
- Jian Wang
- Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu 610052, China
| | - Jiang-Hua Li
- Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu 610052, China
| | - Yidong Guo
- Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu 610052, China
| | - Hongbo Dong
- Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu 610052, China
| | - Qiang Liu
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu 610041, China
| | - Xiao-Qi Yu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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14
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2-Aminobenzaldehyde, a common precursor to acridines and acridones endowed with bioactivities. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131435] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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15
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Abstract
Introduction: Benzofuran is a fundamental unit in numerous bioactive heterocycles. They have attracted chemists and medical researchers due to their broad range of biological activity, where some of them possess unique anticancer, antitubercular, antidiabetic, anti-Alzheimer and anti-inflammatory properties. The benzofuran nucleus is present in a huge number of bioactive natural and synthetic compounds. Benzofuran derivatives have potent applications in pharmaceuticals, agriculture, and polymers. The recent developments considering the biological activities of benzofuran compounds are reported. They have a vital role as pronounced inhibitors against a number of diseases, viruses, fungus, microbes, and enzymes. Areas covered: This review covers the recent developments of biological activities of benzofurans during the period 2014-2019. The covered areas here comprised antimicrobial, anti-inflammatory, antitumor, antitubercular, antidiabetic, anti-Alzheimer, antioxidant, antiviral, vasorelaxant, anti-osteoporotic and enzyme inhibitory activities. Expert opinion: In addition to the already commercialized 34 benzofurans-based drugs in the market, this chapter outlines several potent benzofuran derivatives that may be useful as potential pro-drugs. It is also focused on providing details of SAR and the effect of certain functional groups on the activity of the benzofuran compounds. The presence of -OH, -OMe, sulfonamide, or halogen contributed greatly to increasing the therapeutic activities comparing with reference drugs.
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Affiliation(s)
- Kamal M Dawood
- Department of Chemistry, Faculty of Science, Cairo University , Giza , Egypt
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16
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Functionalization of 9-thioxanthone at the 1-position: From arylamino derivatives to [1]benzo(thio)pyrano[4,3,2-de]benzothieno[2,3-b]quinolines of biological interest. Bioorg Chem 2019; 94:103347. [PMID: 31810757 DOI: 10.1016/j.bioorg.2019.103347] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 10/03/2019] [Accepted: 10/04/2019] [Indexed: 12/24/2022]
Abstract
Original 1-amino substituted thioxanthone derivatives were easily prepared from the bare heterocycle by a deprotometalation-iodolysis-copper-catalyzed CN bond formation sequence. This last reaction delivered mono- or/and diarylated products depending on the aniline involved. 1-Amino-9-thioxanthone was also prepared and reacted with 2-iodoheterocycles. Interestingly, while 1-(arylamino)-9-thioxanthones could be isolated, their subsequent cyclization was found to deliver original hexacyclic derivatives of helicoidal nature. Evaluation of their photophysical properties revealed high fluorescence in polar media, indicating potential applications for biological imaging. These compounds being able to inhibit PIM1 kinase, their putative binding mode was examined through molecular modeling experiments. Altogether, these results tend to suggest the discovery of a new family of fluorescent PIM inhibitors and pave the way for their future rational optimization.
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Bouarfa S, Graßl S, Ivanova M, Langlais T, Bentabed-Ababsa G, Lassagne F, Erb W, Roisnel T, Dorcet V, Knochel P, Mongin F. Copper- and Cobalt-Catalyzed Syntheses of Thiophene-Based Tertiary Amines. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900276] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Salima Bouarfa
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
- Laboratoire de Synthèse Organique Appliquée; Faculté des Sciences Exactes et Appliquées; Université Oran1 Ahmed Ben Bella; BP 1524 El M′Naouer 31000 Oran Algeria
| | - Simon Graßl
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Maria Ivanova
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Timothy Langlais
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Ghenia Bentabed-Ababsa
- Laboratoire de Synthèse Organique Appliquée; Faculté des Sciences Exactes et Appliquées; Université Oran1 Ahmed Ben Bella; BP 1524 El M′Naouer 31000 Oran Algeria
| | - Frédéric Lassagne
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
| | - William Erb
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
| | - Thierry Roisnel
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
| | - Vincent Dorcet
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
| | - Paul Knochel
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Florence Mongin
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
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18
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Scilabra P, Terraneo G, Resnati G. The Chalcogen Bond in Crystalline Solids: A World Parallel to Halogen Bond. Acc Chem Res 2019; 52:1313-1324. [PMID: 31082186 DOI: 10.1021/acs.accounts.9b00037] [Citation(s) in RCA: 250] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The distribution of the electron density around covalently bonded atoms is anisotropic, and this determines the presence, on atoms surface, of areas of higher and lower electron density where the electrostatic potential is frequently negative and positive, respectively. The ability of positive areas on atoms to form attractive interactions with electron rich sites became recently the subject of a flurry of papers. The halogen bond (HaB), the attractive interaction formed by halogens with nucleophiles, emerged as a quite common and dependable tool for controlling phenomena as diverse as the binding of small molecules to proteinaceous targets or the organization of molecular functional materials. The mindset developed in relation to the halogen bond prompted the interest in the tendency of elements of groups 13-16 of the periodic table to form analogous attractive interactions with nucleophiles. This Account addresses the chalcogen bond (ChB), the attractive interaction formed by group 16 elements with nucleophiles, by adopting a crystallographic point of view. Structures of organic derivatives are considered where chalcogen atoms form close contacts with nucleophiles in the geometry typical for chalcogen bonds. It is shown how sulfur, selenium, and tellurium can all form chalcogen bonds, the tendency to give rise to close contacts with nucleophiles increasing with the polarizability of the element. Also oxygen, when conveniently substituted, can form ChBs in crystalline solids. Chalcogen bonds can be strong enough to allow for the interaction to function as an effective and robust tool in crystal engineering. It is presented how chalcogen containing heteroaromatics, sulfides, disulfides, and selenium and tellurium analogues as well as some other molecular moieties can afford dependable chalcogen bond based supramolecular synthons. Particular attention is given to chalcogen containing azoles and their derivatives due to the relevance of these moieties in biosystems and molecular materials. It is shown how the interaction pattern around electrophilic chalcogen atoms frequently recalls the pattern around analogous halogen, pnictogen, and tetrel derivatives. For instance, directionalities of chalcogen bonds around sulfur and selenium in some thiazolium and selenazolium derivatives are similar to directionalities of halogen bonds around bromine and iodine in bromonium and iodonium compounds. This gives experimental evidence that similarities in the anisotropic distribution of the electron density in covalently bonded atoms translates in similarities in their recognition and self-assembly behavior. For instance, the analogies in interaction patterns of carbonitrile substituted elements of groups 17, 16, 15, and 14 will be presented. While the extensive experimental and theoretical data available in the literature prove that HaB and ChB form twin supramolecular synthons in the solid, more experimental information has to become available before such a statement can be safely extended to interactions wherein elements of groups 14 and 15 are the electrophiles. It will nevertheless be possible to develop some general heuristic principles for crystal engineering. Being based on the groups of the periodic table, these principles offer the advantage of being systematic.
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Affiliation(s)
- Patrick Scilabra
- Department of Chemistry, Materials, and Chemical Engineering ’’Giulio Natta’’, Politecnico di Milano, via Mancinelli 7, I-20131 Milano, Italy
| | - Giancarlo Terraneo
- Department of Chemistry, Materials, and Chemical Engineering ’’Giulio Natta’’, Politecnico di Milano, via Mancinelli 7, I-20131 Milano, Italy
| | - Giuseppe Resnati
- Department of Chemistry, Materials, and Chemical Engineering ’’Giulio Natta’’, Politecnico di Milano, via Mancinelli 7, I-20131 Milano, Italy
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19
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Ayaz F, Ersan RH, Algul O. Symmetric bis-benzoxazole-based chemicals exerted anti-inflammatory effect on danger signal LPS-stimulated macrophages. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-019-02398-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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20
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Pattarawarapan M, Yamano D, Wiriya N, Phakhodee W. Metal-Free Synthesis of 2- N, N-Dialkylaminobenzoxazoles Using Tertiary Amines as the Nitrogen Source. J Org Chem 2019; 84:6516-6523. [PMID: 31017442 DOI: 10.1021/acs.joc.9b00797] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The unprecedented reaction of tertiary amines with 2(3 H)-benzoxazolones has been investigated. In the presence of the Ph3P-I2 reagent system, the reaction of both acyclic and cyclic aliphatic tertiary amines led to the formation of 2- N, N-dialkylaminobenzoxazoles with the selective cleavage of an alkyl group. Especially, N-(2-iodoethyl)piperazinyl derivatives were rapidly produced in good yields when using DABCO as the nitrogen source. Only in the cases when the nucleophilicity of the substrates exceeds that of the amine, competitive self-condensation of benzoxazolones then proceeds preferentially. 31P{1H}-NMR study suggested the involvement of an aryloxyphosphonium intermediate and/or possibly 2-iodobenzoxazole which activates the C-2 position of benzoxazolones toward nucleophilic aromatic substitution.
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Affiliation(s)
- Mookda Pattarawarapan
- Department of Chemistry, Faculty of Science , Chiang Mai University , Chiang Mai 50200 , Thailand
- Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Faculty of Science , Chiang Mai University , Chiang Mai 50200 , Thailand
| | - Dolnapa Yamano
- Department of Chemistry, Faculty of Science , Chiang Mai University , Chiang Mai 50200 , Thailand
| | - Nitaya Wiriya
- Department of Chemistry, Faculty of Science , Chiang Mai University , Chiang Mai 50200 , Thailand
| | - Wong Phakhodee
- Department of Chemistry, Faculty of Science , Chiang Mai University , Chiang Mai 50200 , Thailand
- Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Faculty of Science , Chiang Mai University , Chiang Mai 50200 , Thailand
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21
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Robertson SD, Uzelac M, Mulvey RE. Alkali-Metal-Mediated Synergistic Effects in Polar Main Group Organometallic Chemistry. Chem Rev 2019; 119:8332-8405. [DOI: 10.1021/acs.chemrev.9b00047] [Citation(s) in RCA: 122] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Stuart D. Robertson
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, U.K
| | - Marina Uzelac
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, U.K
| | - Robert E. Mulvey
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, U.K
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22
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Tanii S, Arisawa M, Tougo T, Yamaguchi M. Catalytic Method for the Synthesis of C-N-Linked Bi(heteroaryl)s Using Heteroaryl Ethers and N-Benzoyl Heteroarenes. Org Lett 2018. [PMID: 29528237 DOI: 10.1021/acs.orglett.8b00245] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
C-N-linked bi(heteroaryl)s are synthesized by a rhodium-catalyzed N-heteroarylation reaction of N-benzoyl heteroarenes including azoles/azolones, pyridones, cyclic ureas, and cyclic imides using heteroaryl aryl ethers. The reaction involves the covalent bond-exchange reaction of N-CO and HetAr-O bonds without using metal bases and exhibits a broad applicability, giving diverse C-N-linked bi(heteroaryl)s containing five- and six-membered heteroarenes. The N-heteroarylation of N-H azoles/azolones and pyridone proceeds at higher reaction temperatures.
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Affiliation(s)
- Saori Tanii
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba, Sendai 980-8578 , Japan
| | - Mieko Arisawa
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba, Sendai 980-8578 , Japan
| | - Takaya Tougo
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba, Sendai 980-8578 , Japan
| | - Masahiko Yamaguchi
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences , Tohoku University , Aoba, Sendai 980-8578 , Japan
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23
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2-Aminophenones, a common precursor to N-aryl isatins and acridines endowed with bioactivities. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.02.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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24
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Sharma S, Singh S, Kumari A, Sawant DM, Pardasani RT. Ruthenium-Catalyzed Oxidative Annulation of Anilines using Benzothiazole as a Removable Directing Group. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700098] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Shivani Sharma
- Department of Chemistry; Central University of Rajasthan, Bandarsindri; Kishangarh- 305817 Rajasthan India
| | - Sukanya Singh
- Department of Pharmacy; Central University of Rajasthan, Bandarsindri; Kishangarh- 305817 Rajasthan India
| | - Akhilesh Kumari
- Department of Pharmacy; Central University of Rajasthan, Bandarsindri; Kishangarh- 305817 Rajasthan India
| | - Devesh M. Sawant
- Department of Pharmacy; Central University of Rajasthan, Bandarsindri; Kishangarh- 305817 Rajasthan India
| | - Ram T. Pardasani
- Department of Chemistry; Central University of Rajasthan, Bandarsindri; Kishangarh- 305817 Rajasthan India
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25
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Hedidi M, Erb W, Bentabed-Ababsa G, Chevallier F, Picot L, Thiéry V, Bach S, Ruchaud S, Roisnel T, Dorcet V, Mongin F. Synthesis of N-pyridyl azoles using a deprotometalation-iodolysis-N-arylation sequence and evaluation of their antiproliferative activity in melanoma cells. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.08.056] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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26
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Deprotometalation of substituted pyridines and regioselectivity-computed CH acidity relationships. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.03.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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27
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Sharma S, Pathare RS, Maurya AK, Gopal K, Roy TK, Sawant DM, Pardasani RT. Ruthenium Catalyzed Intramolecular C-S Coupling Reactions: Synthetic Scope and Mechanistic Insight. Org Lett 2016; 18:356-9. [PMID: 26761401 DOI: 10.1021/acs.orglett.5b03185] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A ruthenium catalyzed intramolecular C-S coupling reaction of N-arylthioureas for the synthesis of 2-aminobenzothiazoles has been developed. Kinetic, isotope labeling, and computational studies reveal the involvement of an electrophilic ruthenation pathway instead of a direct C-H activation. Stereoelectronic effect of meta-substituents on the N-arylthiourea dictates the final regioselective outcome of the reaction.
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Affiliation(s)
- Shivani Sharma
- Department of Chemistry, ‡Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan , Bandarsindri, Kishangarh - 305 817, Rajasthan, India
| | - Ramdas S Pathare
- Department of Chemistry, ‡Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan , Bandarsindri, Kishangarh - 305 817, Rajasthan, India
| | - Antim K Maurya
- Department of Chemistry, ‡Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan , Bandarsindri, Kishangarh - 305 817, Rajasthan, India
| | - Kandasamy Gopal
- Department of Chemistry, ‡Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan , Bandarsindri, Kishangarh - 305 817, Rajasthan, India
| | - Tapta Kanchan Roy
- Department of Chemistry, ‡Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan , Bandarsindri, Kishangarh - 305 817, Rajasthan, India
| | - Devesh M Sawant
- Department of Chemistry, ‡Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan , Bandarsindri, Kishangarh - 305 817, Rajasthan, India
| | - Ram T Pardasani
- Department of Chemistry, ‡Department of Pharmacy, School of Chemical Sciences and Pharmacy, Central University of Rajasthan , Bandarsindri, Kishangarh - 305 817, Rajasthan, India
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28
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Messaoud MYA, Bentabed-Ababsa G, Hedidi M, Derdour A, Chevallier F, Halauko YS, Ivashkevich OA, Matulis VE, Picot L, Thiéry V, Roisnel T, Dorcet V, Mongin F. Deproto-metallation of N-arylated pyrroles and indoles using a mixed lithium-zinc base and regioselectivity-computed CH acidity relationship. Beilstein J Org Chem 2015; 11:1475-85. [PMID: 26425204 PMCID: PMC4578368 DOI: 10.3762/bjoc.11.160] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Accepted: 07/31/2015] [Indexed: 01/23/2023] Open
Abstract
The synthesis of N-arylated pyrroles and indoles is documented, as well as their functionalization by deprotonative metallation using the base in situ prepared from LiTMP and ZnCl2·TMEDA (1/3 equiv). With N-phenylpyrrole and -indole, the reactions were carried out in hexane containing TMEDA which regioselectively afforded the 2-iodo derivatives after subsequent iodolysis. With pyrroles and indoles bearing N-substituents such as 2-thienyl, 3-pyridyl, 4-methoxyphenyl and 4-bromophenyl, the reactions all took place on the substituent, at the position either adjacent to the heteroatom (S, N) or ortho to the heteroatom-containing substituent (OMe, Br). The CH acidities of the substrates were determined in THF solution using the DFT B3LYP method in order to rationalize the experimental results.
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Affiliation(s)
- Mohamed Yacine Ameur Messaoud
- Equipe Chimie et Photonique Moléculaires, Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Bâtiment 10A, Case 1003, Campus de Beaulieu, 35042 Rennes, France ; Laboratoire de Synthèse Organique Appliquée, Faculté des Sciences, Université d'Oran 1 Ahmed Ben Bella, BP 1524 El M'Naouer, 31000 Oran, Algeria
| | - Ghenia Bentabed-Ababsa
- Laboratoire de Synthèse Organique Appliquée, Faculté des Sciences, Université d'Oran 1 Ahmed Ben Bella, BP 1524 El M'Naouer, 31000 Oran, Algeria
| | - Madani Hedidi
- Equipe Chimie et Photonique Moléculaires, Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Bâtiment 10A, Case 1003, Campus de Beaulieu, 35042 Rennes, France ; Laboratoire de Synthèse Organique Appliquée, Faculté des Sciences, Université d'Oran 1 Ahmed Ben Bella, BP 1524 El M'Naouer, 31000 Oran, Algeria
| | - Aïcha Derdour
- Laboratoire de Synthèse Organique Appliquée, Faculté des Sciences, Université d'Oran 1 Ahmed Ben Bella, BP 1524 El M'Naouer, 31000 Oran, Algeria
| | - Floris Chevallier
- Equipe Chimie et Photonique Moléculaires, Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Bâtiment 10A, Case 1003, Campus de Beaulieu, 35042 Rennes, France
| | - Yury S Halauko
- UNESCO Chair of Belarusian State University, 14 Leningradskaya Str., Minsk, 220030, Belarus
| | - Oleg A Ivashkevich
- UNESCO Chair of Belarusian State University, 14 Leningradskaya Str., Minsk, 220030, Belarus
| | - Vadim E Matulis
- Research Institute for Physico-Chemical Problems of Belarusian State University, 14 Leningradskaya Str., Minsk, 220030, Belarus
| | - Laurent Picot
- Laboratoire Littoral Environnement et Sociétés, UMRi CNRS 7266, Université de La Rochelle, 17042 La Rochelle, France
| | - Valérie Thiéry
- Laboratoire Littoral Environnement et Sociétés, UMRi CNRS 7266, Université de La Rochelle, 17042 La Rochelle, France
| | - Thierry Roisnel
- Centre de Diffractométrie X, Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Bâtiment 10B, Campus de Beaulieu, 35042 Rennes, France
| | - Vincent Dorcet
- Centre de Diffractométrie X, Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Bâtiment 10B, Campus de Beaulieu, 35042 Rennes, France
| | - Florence Mongin
- Equipe Chimie et Photonique Moléculaires, Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Bâtiment 10A, Case 1003, Campus de Beaulieu, 35042 Rennes, France
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29
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Wang M, Han X, Zhou Z. New substituted benzimidazole derivatives: a patent review (2013 – 2014). Expert Opin Ther Pat 2015; 25:595-612. [DOI: 10.1517/13543776.2015.1015987] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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