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Gaikwad SS, Thorat NM, Patil LR. Sonication Assisted One-Pot Synthesis of Substituted Imidazopyridine from Styrene in Water. Curr Org Synth 2020; 18:366-370. [PMID: 33153423 DOI: 10.2174/1570179417999201105160447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 10/06/2020] [Accepted: 10/12/2020] [Indexed: 11/22/2022]
Abstract
The present protocol is a simple and eco-friendly approach for the one-pot procedure for the synthesis of substituted imidazopyridines ranging from important feedstock's like styrene promoted by NBS. Through sonicator and microwave commercially available styrene with NBS in water followed by reaction with 2- aminopyridines afforded important heterocyclic scaffolds in an one-pot procedure.
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Affiliation(s)
- Sanjay Subhas Gaikwad
- Department of Chemistry, Maharaja Jivajirao Shinde Arts, Science, Commerce College, Shrigonda Maharashtra 413701, India
| | - Nitin Madhu Thorat
- Department of Chemistry, Maharaja Jivajirao Shinde Arts, Science, Commerce College, Shrigonda Maharashtra 413701, India
| | - Limbraj Rajaram Patil
- Department of Chemistry, Maharaja Jivajirao Shinde Arts, Science, Commerce College, Shrigonda Maharashtra 413701, India
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2
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Keel KL, Tepe J. The preparation of (4H)-imidazol-4-ones and their application in the total synthesis of natural products. Org Chem Front 2020; 7:3284-3311. [PMID: 33796321 DOI: 10.1039/d0qo00764a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
(4H)-Imidazol-4-ones are an important scaffold for a variety of applications, including natural products, medicine, agriculture, and other applications. Over the years, there have been a number of preparations published for the synthesis of imidazol-4-ones. This review discusses the progress made on the synthesis of imidazol-4-ones, and their application towards the total synthesis of a range of imidazol-4-one containing natural products. Emphasis is made on areas of the field that still need progress.
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3
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Katrun P, Kuhakarn C. K2S2O8-Mediated halogenation of 2-arylimidazo[1,2-a]pyridines using sodium halides as the halogen sources. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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4
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Dey A, Singsardar M, Sarkar R, Hajra A. Environment-Friendly Protocol for the Chlorination of Imidazoheterocycles by Chloramine-T. ACS OMEGA 2018; 3:3513-3521. [PMID: 31458602 PMCID: PMC6641228 DOI: 10.1021/acsomega.7b01844] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 03/15/2018] [Indexed: 05/27/2023]
Abstract
An environment-friendly method for the chlorination of imidazoheterocycles has been developed using chloramine-T, a novel chlorinating reagent. A bunch of C-3 chloro-substituted imidazo[1,2-a]pyridines with variety of functionalities have been synthesized in good yields under neat condition at room temperature within very short time. This chlorination process is also applicable to imidazo[2,1-b]thiazole scaffolds. The present methodology is relevant to gram-scale synthesis. The major advantages of this system such as wide applicability, easy availability of reactants, open-air and metal- and solvent-free reaction conditions, no need of work-up, and simple purification technique represent a green synthetic protocol.
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5
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Charvin D, Pomel V, Ortiz M, Frauli M, Scheffler S, Steinberg E, Baron L, Deshons L, Rudigier R, Thiarc D, Morice C, Manteau B, Mayer S, Graham D, Giethlen B, Brugger N, Hédou G, Conquet F, Schann S. Discovery, Structure–Activity Relationship, and Antiparkinsonian Effect of a Potent and Brain-Penetrant Chemical Series of Positive Allosteric Modulators of Metabotropic Glutamate Receptor 4. J Med Chem 2017; 60:8515-8537. [DOI: 10.1021/acs.jmedchem.7b00991] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Delphine Charvin
- Prexton Therapeutics, 14 Chemin
des Aulx, 1228 Plan-les-Ouates, Geneva, Switzerland
| | - Vincent Pomel
- Prexton Therapeutics, 14 Chemin
des Aulx, 1228 Plan-les-Ouates, Geneva, Switzerland
| | - Millan Ortiz
- Prexton Therapeutics, 14 Chemin
des Aulx, 1228 Plan-les-Ouates, Geneva, Switzerland
| | - Mélanie Frauli
- Domain Therapeutics, 850 Boulevard Sébastien Brant, 67400 Illkirch-Strasbourg, France
| | - Sophie Scheffler
- Domain Therapeutics, 850 Boulevard Sébastien Brant, 67400 Illkirch-Strasbourg, France
| | - Edith Steinberg
- Domain Therapeutics, 850 Boulevard Sébastien Brant, 67400 Illkirch-Strasbourg, France
| | - Luc Baron
- Domain Therapeutics, 850 Boulevard Sébastien Brant, 67400 Illkirch-Strasbourg, France
| | - Laurène Deshons
- Domain Therapeutics, 850 Boulevard Sébastien Brant, 67400 Illkirch-Strasbourg, France
| | - Rachel Rudigier
- Prestwick Chemical, 220 Boulevard Gonthier d’Andernach, 67400 Illkirch-Strasbourg, France
| | - Delphine Thiarc
- Prestwick Chemical, 220 Boulevard Gonthier d’Andernach, 67400 Illkirch-Strasbourg, France
| | - Christophe Morice
- Prestwick Chemical, 220 Boulevard Gonthier d’Andernach, 67400 Illkirch-Strasbourg, France
| | - Baptiste Manteau
- Domain Therapeutics, 850 Boulevard Sébastien Brant, 67400 Illkirch-Strasbourg, France
| | - Stanislas Mayer
- Domain Therapeutics, 850 Boulevard Sébastien Brant, 67400 Illkirch-Strasbourg, France
| | - Danielle Graham
- EMD Serono, 45A Middlesex Turnpike, Billerica, Massachusetts 0182, United States
| | - Bruno Giethlen
- Prestwick Chemical, 220 Boulevard Gonthier d’Andernach, 67400 Illkirch-Strasbourg, France
| | - Nadia Brugger
- EMD Serono, 45A Middlesex Turnpike, Billerica, Massachusetts 0182, United States
| | - Gaël Hédou
- EMD Serono, 45A Middlesex Turnpike, Billerica, Massachusetts 0182, United States
| | - François Conquet
- Prexton Therapeutics, 14 Chemin
des Aulx, 1228 Plan-les-Ouates, Geneva, Switzerland
| | - Stephan Schann
- Domain Therapeutics, 850 Boulevard Sébastien Brant, 67400 Illkirch-Strasbourg, France
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Xiao X, Xie Y, Bai S, Deng Y, Jiang H, Zeng W. Transition-Metal-Free Tandem Chlorocyclization of Amines with Carboxylic Acids: Access to Chloroimidazo[1,2-α]pyridines. Org Lett 2015; 17:3998-4001. [DOI: 10.1021/acs.orglett.5b01868] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Xinsheng Xiao
- School of Chemistry and Chemical
Engineering, South China University of Technology, Guangzhou 510641, China
| | - Ying Xie
- School of Chemistry and Chemical
Engineering, South China University of Technology, Guangzhou 510641, China
| | - Siyi Bai
- School of Chemistry and Chemical
Engineering, South China University of Technology, Guangzhou 510641, China
| | - Yuanfu Deng
- School of Chemistry and Chemical
Engineering, South China University of Technology, Guangzhou 510641, China
| | - Huanfeng Jiang
- School of Chemistry and Chemical
Engineering, South China University of Technology, Guangzhou 510641, China
| | - Wei Zeng
- School of Chemistry and Chemical
Engineering, South China University of Technology, Guangzhou 510641, China
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Keshipour S, Shaabani A, Shojaei S, Nosrati H, Ng SW. A novel one-pot isocyanide-based three-component reaction: synthesis of highly functionalized imidazo-chromen-4-ones. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2015. [DOI: 10.1007/s13738-015-0640-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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8
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Zou B, Nagle A, Chatterjee AK, Leong SY, Tan LJ, Sim WLS, Mishra P, Guntapalli P, Tully DC, Lakshminarayana SB, Lim CS, Tan YC, Abas SN, Bodenreider C, Kuhen KL, Gagaring K, Borboa R, Chang J, Li C, Hollenbeck T, Tuntland T, Zeeman AM, Kocken CHM, McNamara C, Kato N, Winzeler EA, Yeung BKS, Diagana TT, Smith PW, Roland J. Lead optimization of imidazopyrazines: a new class of antimalarial with activity on Plasmodium liver stages. ACS Med Chem Lett 2014; 5:947-50. [PMID: 25147620 DOI: 10.1021/ml500244m] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 07/06/2014] [Indexed: 02/02/2023] Open
Abstract
Imidazopyridine 1 was identified from a phenotypic screen against P. falciparum (Pf) blood stages and subsequently optimized for activity on liver-stage schizonts of the rodent parasite P. yoelii (Py) as well as hypnozoites of the simian parasite P. cynomolgi (Pc). We applied these various assays to the cell-based lead optimization of the imidazopyrazines, exemplified by 3 (KAI407), and show that optimized compounds within the series with improved pharmacokinetic properties achieve causal prophylactic activity in vivo and may have the potential to target the dormant stages of P. vivax malaria.
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Affiliation(s)
- Bin Zou
- Novartis Institute for Tropical Diseases, 10 Biopolis Road #05-01 Chromos, 138670 Singapore
| | - Advait Nagle
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
| | - Arnab K. Chatterjee
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
| | - Seh Yong Leong
- Novartis Institute for Tropical Diseases, 10 Biopolis Road #05-01 Chromos, 138670 Singapore
| | - Liying Jocelyn Tan
- Novartis Institute for Tropical Diseases, 10 Biopolis Road #05-01 Chromos, 138670 Singapore
| | - Wei Lin Sandra Sim
- Novartis Institute for Tropical Diseases, 10 Biopolis Road #05-01 Chromos, 138670 Singapore
| | - Pranab Mishra
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
| | - Prasuna Guntapalli
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
| | - David C. Tully
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
| | | | - Chek Shik Lim
- Novartis Institute for Tropical Diseases, 10 Biopolis Road #05-01 Chromos, 138670 Singapore
| | - Yong Cheng Tan
- Novartis Institute for Tropical Diseases, 10 Biopolis Road #05-01 Chromos, 138670 Singapore
| | - Siti Nurdiana Abas
- Novartis Institute for Tropical Diseases, 10 Biopolis Road #05-01 Chromos, 138670 Singapore
| | - Christophe Bodenreider
- Novartis Institute for Tropical Diseases, 10 Biopolis Road #05-01 Chromos, 138670 Singapore
| | - Kelli L. Kuhen
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
| | - Kerstin Gagaring
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
| | - Rachel Borboa
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
| | - Jonathan Chang
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
| | - Chun Li
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
| | - Thomas Hollenbeck
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
| | - Tove Tuntland
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
| | - Anne-Marie Zeeman
- Department of Parasitology, Biomedical Primate Research Centre, 2280 GH Rijswijk, The Netherlands
| | - Clemens H. M. Kocken
- Department of Parasitology, Biomedical Primate Research Centre, 2280 GH Rijswijk, The Netherlands
| | - Case McNamara
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
| | - Nobutaka Kato
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
| | - Elizabeth A. Winzeler
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
- Department of Pediatrics, School of Medicine, University of California, San Diego, California 92093, United States
| | - Bryan K. S. Yeung
- Novartis Institute for Tropical Diseases, 10 Biopolis Road #05-01 Chromos, 138670 Singapore
| | - Thierry T. Diagana
- Novartis Institute for Tropical Diseases, 10 Biopolis Road #05-01 Chromos, 138670 Singapore
| | - Paul W. Smith
- Novartis Institute for Tropical Diseases, 10 Biopolis Road #05-01 Chromos, 138670 Singapore
| | - Jason Roland
- Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, United States
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9
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Kudyakova YS, Bazhin DN, Goryaeva MV, Burgart YV, Saloutin VI. The use of 2-(1-alkoxyalkylidene)-1,3-dicarbonyl compounds in organic synthesis. RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v083n02abeh004388] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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10
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Chen X, Zhu L, Fang L, Yan S, Lin J. Catalyst-free concise synthesis of imidazo[1,2-a]pyrrolo[3,4-e]pyridine derivatives. RSC Adv 2014. [DOI: 10.1039/c3ra45485a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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11
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Rozentsveig IB, Serykh VY, Chernysheva GN, Chernyshev KA, Kondrashov EV, Tretyakov EV, Romanenko GV. One-Pot Synthesis ofN-(Imidazo[1,2-a]pyridin-3-yl)- andN-(Imidazo[2,1-b][1,3]thiazol-5-yl)sulfonamides. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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12
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Masurier N, Debiton E, Jacquemet A, Bussière A, Chezal JM, Ollivier A, Tétégan D, Andaloussi M, Galmier MJ, Lacroix J, Canitrot D, Teulade JC, Gaudreault RC, Chavignon O, Moreau E. Imidazonaphthyridine systems (part 2): Functionalization of the phenyl ring linked to the pyridine pharmacophore and its replacement by a pyridinone ring produces intriguing differences in cytocidal activity. Eur J Med Chem 2012; 52:137-50. [DOI: 10.1016/j.ejmech.2012.03.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Revised: 03/02/2012] [Accepted: 03/06/2012] [Indexed: 11/27/2022]
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13
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Chen X, Yang H, Ge Y, Feng L, Jia J, Wang J. Synthesis, X-ray crystal structure and optical properties of novel 2-aryl-3-ethoxycarbonyl-4-phenylpyrido[1,2-a]benzimidazoles. LUMINESCENCE 2011; 27:382-9. [DOI: 10.1002/bio.1362] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Revised: 08/29/2011] [Accepted: 08/31/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Xia Chen
- School of Chemistry and Chemical Engineering; Shandong University; Jinan; 250100; Shandong; People's Republic of China
| | - He Yang
- School of Chemistry and Chemical Engineering; Shandong University; Jinan; 250100; Shandong; People's Republic of China
| | - Yanqing Ge
- School of Chemistry and Chemical Engineering; Taishan Medical University; Taian; Shandong; 271016; People's Republic of China
| | - Lei Feng
- School of Chemistry and Chemical Engineering; Shandong University; Jinan; 250100; Shandong; People's Republic of China
| | | | - Jianwu Wang
- School of Chemistry and Chemical Engineering; Shandong University; Jinan; 250100; Shandong; People's Republic of China
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14
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Liao Q, Zhang L, Li S, Xi C. Domino N−H/C−H Bond Activation: Copper-Catalyzed Synthesis of Nitrogen-Bridgehead Heterocycles Using Azoles and 1,4-Dihalo-1,3-dienes. Org Lett 2010; 13:228-31. [DOI: 10.1021/ol1026365] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qian Liao
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China, and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Liyun Zhang
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China, and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Shutao Li
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China, and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Chanjuan Xi
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China, and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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15
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16
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Chezal JM, Paeshuyse J, Gaumet V, Canitrot D, Maisonial A, Lartigue C, Gueiffier A, Moreau E, Teulade JC, Chavignon O, Neyts J. Synthesis and antiviral activity of an imidazo[1,2-a]pyrrolo[2,3-c]pyridine series against the bovine viral diarrhea virus. Eur J Med Chem 2010; 45:2044-7. [PMID: 20149501 DOI: 10.1016/j.ejmech.2010.01.023] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2009] [Revised: 01/07/2010] [Accepted: 01/11/2010] [Indexed: 10/19/2022]
Abstract
A series of imidazo[1,2-a]pyrrolo[2,3-c]pyridines has been prepared and evaluated for their anti-BVDV activities in MDBK cells. From the synthesized analogues bearing modifications of the substituents at positions 2, 3, 7 and 8, compounds 10a, b, 16, 24, 25 and 26 exhibited significant anti-BVDV activities.
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Affiliation(s)
- Jean-Michel Chezal
- Clermont Université, University Clermont 1, EA 4231, Clermont-Ferrand F-63001, France.
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18
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El Ashry ESH, Nadeem S, Shah MR, Kilany YE. Recent Advances in the Dimroth Rearrangement. ADVANCES IN HETEROCYCLIC CHEMISTRY 2010. [DOI: 10.1016/s0065-2725(10)01005-6] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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19
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Masurier N, Moreau E, Lartigue C, Gaumet V, Chezal JM, Heitz A, Teulade JC, Chavignon O. New Opportunities with the Duff Reaction. J Org Chem 2008; 73:5989-92. [DOI: 10.1021/jo800700b] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nicolas Masurier
- E.A.4231, Faculté de Pharmacie, 28 place Henri Dunant, B.P. 38, 63001 Clermont-Ferrand Cedex 1, France, and CBS, CNRS, INSERM, 29, rue de Navacelles, 34060 Montpellier, France
| | - Emmanuel Moreau
- E.A.4231, Faculté de Pharmacie, 28 place Henri Dunant, B.P. 38, 63001 Clermont-Ferrand Cedex 1, France, and CBS, CNRS, INSERM, 29, rue de Navacelles, 34060 Montpellier, France
| | - Claire Lartigue
- E.A.4231, Faculté de Pharmacie, 28 place Henri Dunant, B.P. 38, 63001 Clermont-Ferrand Cedex 1, France, and CBS, CNRS, INSERM, 29, rue de Navacelles, 34060 Montpellier, France
| | - Vincent Gaumet
- E.A.4231, Faculté de Pharmacie, 28 place Henri Dunant, B.P. 38, 63001 Clermont-Ferrand Cedex 1, France, and CBS, CNRS, INSERM, 29, rue de Navacelles, 34060 Montpellier, France
| | - Jean-Michel Chezal
- E.A.4231, Faculté de Pharmacie, 28 place Henri Dunant, B.P. 38, 63001 Clermont-Ferrand Cedex 1, France, and CBS, CNRS, INSERM, 29, rue de Navacelles, 34060 Montpellier, France
| | - Annie Heitz
- E.A.4231, Faculté de Pharmacie, 28 place Henri Dunant, B.P. 38, 63001 Clermont-Ferrand Cedex 1, France, and CBS, CNRS, INSERM, 29, rue de Navacelles, 34060 Montpellier, France
| | - Jean-Claude Teulade
- E.A.4231, Faculté de Pharmacie, 28 place Henri Dunant, B.P. 38, 63001 Clermont-Ferrand Cedex 1, France, and CBS, CNRS, INSERM, 29, rue de Navacelles, 34060 Montpellier, France
| | - Olivier Chavignon
- E.A.4231, Faculté de Pharmacie, 28 place Henri Dunant, B.P. 38, 63001 Clermont-Ferrand Cedex 1, France, and CBS, CNRS, INSERM, 29, rue de Navacelles, 34060 Montpellier, France
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20
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Hulme C, Lee YS. Emerging approaches for the syntheses of bicyclic imidazo[1,2-x]-heterocycles. Mol Divers 2008; 12:1-15. [PMID: 18409015 DOI: 10.1007/s11030-008-9072-1] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2007] [Accepted: 02/24/2008] [Indexed: 11/29/2022]
Abstract
Imidazo-[1,2-x]heterocycles are versatile building blocks for use in both a 'drug hunters' quest to discover new leads and a chemical biologists search for effective molecular tools in 'cell perturbation' studies. At the front end of the drug discovery flow chart, the last 5-10 years have witnessed the discovery of new high-throughput methodologies which very quickly have enabled access to virtual libraries of these chemo-types in the realm of 10(7) derivatives. Interestingly, these often neglected cores in patent cooperation treaty (PCT) applications appear in several highly effective marketed drugs, completing the medicinal chemists search for clinical success. Such rigid chemo-types, all containing a bridgehead nitrogen atom, are thus poised for an ever increasing impact on the discovery and development of new molecular therapeutics. The following mini-review will briefly cover therapeutic utility, chemical methodologies and automation developed to enable preparation of arrays of these chemo-types in a high-throughput manner. Synthetic emphasis is placed on a 3-component-3-center isocyanide based multi-component reaction (IMCR), which spans solution, solid phase, flourous and microwave assisted organic synthesis.
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Affiliation(s)
- Christopher Hulme
- Division of Medicinal Chemistry & Organic Chemistry, BIO5 Institute, University of Arizona, Tucson, Arizona, USA.
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Andaloussi M, Moreau E, Masurier N, Lacroix J, Gaudreault RC, Chezal JM, El Laghdach A, Canitrot D, Debiton E, Teulade JC, Chavignon O. Novel imidazo[1,2-a]naphthyridinic systems (part 1): synthesis, antiproliferative and DNA-intercalating activities. Eur J Med Chem 2008; 43:2505-17. [PMID: 18403058 DOI: 10.1016/j.ejmech.2008.02.017] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2007] [Revised: 01/18/2008] [Accepted: 02/08/2008] [Indexed: 11/26/2022]
Abstract
Novel imidazo[1,2-a]naphthyridinic systems 6a-15a and 6b-15b were obtained from Friedländer's reaction in imidazo[1,2-a]pyridine series. Most of the compounds were evaluated for their antitumor activity in the NCIs in vitro human tumor cell line screening panel. Among them, pentacyclic derivatives 13b and 14a exhibited in vitro activity comparable to anticancer agent such as amsacrine. Their mechanism of cytotoxicity action was unrelated to poisoning or inhibiting abilities against topo1. On the contrary, we highlighted a direct intercalation of the drugs into DNA by electrophoresis on agarose gel.
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22
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Characteristics of the Intermediates in the Cyclization Reactions of Heterocycle-fused[1,4]oxazine Derivatives: Stepwise versus Concerted. B KOREAN CHEM SOC 2007. [DOI: 10.5012/bkcs.2007.28.12.2219] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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23
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A convenient synthesis of linear pyridinoimidazo[1,2-a]pyridine and pyrroloimidazo[1,2-a]pyridine cores. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.07.223] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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24
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Carballares S, Cifuentes MM, Stephenson GA. Regioselective two step synthesis of 3-substituted 2-aminoimidazo[1,2-a]pyrimidines. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2006.11.181] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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25
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Venkatesh C, Sundaram GSM, Ila H, Junjappa H. Palladium-Catalyzed Intramolecular N-Arylation of Heteroarenes: A Novel and Efficient Route to Benzimidazo[1,2-a]quinolines. J Org Chem 2006; 71:1280-3. [PMID: 16438556 DOI: 10.1021/jo0522411] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient new route for the synthesis of benzimidazo[1,2-a]quinolines has been developed via the palladium-catalyzed intramolecular Buchwald-Harwtig aryl amination of newly synthesized 2-(2'-bromoanilino)quinolines.
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Affiliation(s)
- C Venkatesh
- Department of Chemistry, Indian Institute of Technology, Kanpur-208016, India
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26
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Chavignon O, Andaloussi M, M. Chezal J, Moreau E, Lartigue C, El Laghdach A, C. Teulade J. Preliminary Study of Palladium Catalyzed Iminoannulation in an Imidazo[1,2-a]pyridine Series. HETEROCYCLES 2005. [DOI: 10.3987/com-05-10340] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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27
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Chezal JM, Moreau E, Desbois N, Blache Y, Chavignon O, Teulade JC. Synthesis of carbamoylpyridine and imidazo[1,5-a]pyridin-1,3-diones via ortho-acetalhydantoin intermediates. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2003.10.200] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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28
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Efficient synthesis of novel dipyridoimidazoles and pyrido[1′,2′;1,2]imidazo[4,5-d]pyridazine derivatives. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)00938-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Katritzky AR, Xu YJ, Tu H. Regiospecific synthesis of 3-substituted imidazo[1,2-a]pyridines, imidazo[1,2-a]pyrimidines, and imidazo[1,2-c]pyrimidine. J Org Chem 2003; 68:4935-7. [PMID: 12790603 DOI: 10.1021/jo026797p] [Citation(s) in RCA: 136] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
3-Substituted imidazo[1,2-a]pyridines, imidazo[1,2-a]pyrimidines, and imidazo[1,2-c]pyrimidine were obtained regiospecifically in yields of 35-92% in one pot by reaction of 2-aminopyridines or 2-(or 4-)aminopyrimidines, respectively, with 1,2-bis(benzotriazolyl)-1,2-(dialkylamino)ethanes.
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Affiliation(s)
- Alan R Katritzky
- Center for Heterocyclic Chemistry, Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA.
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30
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Panda K, Suresh JR, Ila H, Junjappa H. Heteroaromatic annulation of 2-methyl/2-cyanomethylbenzimidazole dianions with alpha-oxoketene dithioacetals: a highly regioselective synthetic protocol for 1,2- and 2,3-substituted/annulated pyrido[1,2-a]benzimidazoles. J Org Chem 2003; 68:3498-506. [PMID: 12713352 DOI: 10.1021/jo026786w] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A highly efficient and regioselective annulation protocol for a series of linearly 2,3- and angularly 1,2-substituted and annulated pyrido[1,2-a]benzimidazoles involving [3 + 3] cyclocondensation of the dianions generated from 2-methyl (2A) and 2-cyanomethyl (3A) benzimidazoles with a variety of alpha-oxoketene dithioacetals has been reported. Thus the dianion 2A derived from 2-methylbenzimidazole has been shown to undergo regioselective 1,2-addition with various alpha-oxoketene dithioacetals derived from acyclic (4a-d) and cyclic ketones (13a,b, 20, 29 and 32) to afford various carbinol acetals which on intramolecular cyclocondensation in the presence of phosphoric acid furnish the corresponding 1-methylthio-2,3-substituted (5a-c) and 2,3-fused linear polycyclic (14a,b,21, 30, and 33) pyrido[1,2-a]benzimidazoles in high yields. Similarly the dianion 3A from 2-cyanomethylbenzimidazole undergoes one-pot conjugate addition-elimination and cyclocondensation with these alpha-oxoketene dithioacetals to give 4-cyano-3-(methylthio)-1(or 1,2-)-substituted (6a-d) and the corresponding angularly 1,2-fused (16a,b, 23, 31, and 34) polycylic analogues of pyrido[1,2-a]benzimidazoles in excellent yields.
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Affiliation(s)
- Kausik Panda
- Department of Chemistry, Indian Institute of Technology, Kanpur 208 016, India
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31
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Jaramillo C, Carretero JC, de Diego J, del Prado M, Hamdouchi C, Roldán JL, Sánchez-Martı́nez C. Regioselective synthesis of 3,6-disubstituted-2-aminoimidazo[1,2-a]pyridines. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)02278-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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32
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Arrault A, Touzeau F, Guillaumet G, Léger JM, Jarry C, Mérour JY. Synthesis of functionalised pyrido[4,3-b][1,4]oxazine and imidazo[1,2-a]pyridine derivatives. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00875-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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