1
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Wen L, Tan Q, Pi C, Yuan J, Zhang J, Mi X. Visible-light-mediated C-H amidation of imidazoheterocycles with N-amidopyridiniums. Org Biomol Chem 2024; 22:4647-4650. [PMID: 38787700 DOI: 10.1039/d4ob00461b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2024]
Abstract
C-3 amidated imidazoheterocycles were synthesized via a visible light-promoted reaction of imidazoheterocycles with N-amidopyridinium salts catalyzed by 4CzIPN under mild conditions. For imidazoheterocycles and N-amidopyridinium salts with various substituents, the reaction proceeded smoothly to give the corresponding products in moderate to good yields. The reaction provides a new strategy for the synthesis of secondary amides with the imidazo[1,2-a]pyridine core.
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Affiliation(s)
- Lili Wen
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Qiannan Tan
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Chao Pi
- Henan Key Laboratory of Chemical Biology and Organic Chemistry, Key Laboratory of Applied Chemistry of Henan Universities, Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450052, China.
| | - Juan Yuan
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Jingyu Zhang
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Xia Mi
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China.
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2
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Gao J, Liu Z, Guo X, Wu L, Chen Z, Yang K. 1,1,1,3,3,3-Hexafluoro-2-Propanol-Promoted Friedel-Crafts Reaction: Metal-Free Synthesis of C3-Difluoromethyl Carbinol-Containing Imidazo[1,2- a]pyridines at Room Temperature. Molecules 2023; 28:7522. [PMID: 38005245 PMCID: PMC10672982 DOI: 10.3390/molecules28227522] [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: 10/12/2023] [Revised: 11/06/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
A facile and efficient method has been developed for the synthesis of C3-difluoromethyl carbinol-containing imidazo[1,2-a]pyridines at room temperature via the HFIP-promoted Friedel-Crafts reaction of difluoroacetaldehyde ethyl hemiacetal and imidazo[1,2-a]pyridines. This strategy could be applied to the direct C(sp2)-H hydroxydifluoromethylation of imidazo[1,2-a]pyridines and afford a series of novel difluoromethylated carbinols in good to satisfactory yields with 29 examples. Furthermore, gram-scale and synthetic transformation experiments have also been achieved, demonstrating its potential applicable value in organic synthesis. This green protocol has several advantages, including being transition metal- and oxidant-free, being carried out at room temperature, having high efficiency, and having a wide substrate scope.
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Affiliation(s)
| | | | | | | | - Zhixi Chen
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (J.G.); (Z.L.); (X.G.); (L.W.)
| | - Kai Yang
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (J.G.); (Z.L.); (X.G.); (L.W.)
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3
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Rizk MA, El-Sayed SAES, El-Alfy ES, Igarashi I. Imidazo[1,2-a]pyridine: a Highly Potent Therapeutic Agent Clears Piroplasm Infection In Vitro. Acta Parasitol 2023; 68:249-256. [PMID: 36637693 DOI: 10.1007/s11686-022-00655-w] [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: 07/27/2022] [Accepted: 12/13/2022] [Indexed: 01/14/2023]
Abstract
BACKGROUND AND PURPOSE The imidazo[1,2-a] pyridines have huge applications in medicinal chemistry with potent activity against wide spectrum of infectious agents. The efficacy of imidazo[1,2-a]pyridine on the in vitro growth of different piroplasms, including Babesia bovis, B. bigemina, B. divergens, B. caballi, and Theileria equi, was investigated in this study. METHODS The anti-piroplasm efficacy of imidazo[1,2-a] pyridines was assessed using a fluorescence-based SYBR Green I assay. Furthermore, efficacy of imidazo[1,2-a]pyridine against piroplasms following discontinuation of treatment was also assessed using a viability assay. In vitro cultures of B. bovis and T. equi were used to assess the imidazo[1,2-a]pyridine and diminazene aceturate (DA) interaction. RESULTS In vitro, imidazo[1,2-a]pyridine inhibited the growth of B. bovis, B. bigemina, B. caballi, and T. equi in a dose-dependent manner. The highest inhibitory effects of imidazo[1,2-a]pyridine were detected on the growth of B. caballi with IC50 value of 0.47 ± 0.07. Interestingly, the efficacy of imidazo[1,2-a]pyridine was higher against B. bigemina (IC50: 1.37 ± 0.15) compared to the positive-control DA (IC50: 2.29 ± 0.06). The viability test findings indicate that imidazo[1,2-a]pyridine had a long-lasting inhibitory effect on bovine Babesia parasites in vitro growth up to 4 days after treatment. Notably, when coupled with DA at 0.75 or 0.50 IC50, a high concentration (0.75 IC50) of imidazo[1,2-a]pyridine produced additive suppression of B. bovis growth which suggest that imidazo[1,2-a]pyridine/DA could be a promising combination therapy for the treatment of B. bovis. CONCLUSION The obtained encouraging findings pave the way for in vitro and in vivo efficacy trials of imidazo[1,2-a]pyridine derivatives against several piroplasmids.
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Affiliation(s)
- Mohamed Abdo Rizk
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-Cho, Obihiro, Hokkaido, 080-8555, Japan. .,Department of Internal Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt.
| | - Shimaa Abd El-Salam El-Sayed
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-Cho, Obihiro, Hokkaido, 080-8555, Japan. .,Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt.
| | - El-Sayed El-Alfy
- Parasitology Department, Faculty of Veterinary Medicine, Mansoura University, Mansoura, 35516, Egypt
| | - Ikuo Igarashi
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-Cho, Obihiro, Hokkaido, 080-8555, Japan.
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4
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Moinul M, Khatun S, Amin SA, Jha T, Gayen S. Recent trends in fragment-based anticancer drug design strategies against different targets: A mini-review. Biochem Pharmacol 2022; 206:115301. [DOI: 10.1016/j.bcp.2022.115301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 10/07/2022] [Accepted: 10/10/2022] [Indexed: 11/02/2022]
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5
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Kumbhar VV, Khairnar BB, Chaskar MG, Pawar RA, Gugale GS. Synthetic strategies in development of 3-aroylimidazo[1,2-a]pyridines and 2-aroylimidazo[1,2-a]pyridines: A decade update. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2056057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Vikrant V. Kumbhar
- Department of Chemistry, PDEA’s Prof. Ramkrishna More College, Pune, India
- Interdisciplinary School of Science (IDSS), Savitribai Phule Pune University, Pune, India
| | - Bhushan B. Khairnar
- Department of Chemistry, PDEA’s Prof. Ramkrishna More College, Pune, India
- Interdisciplinary School of Science (IDSS), Savitribai Phule Pune University, Pune, India
| | - Manohar G. Chaskar
- Department of Chemistry, PDEA’s Prof. Ramkrishna More College, Pune, India
| | - Ramdas A. Pawar
- Department of Chemistry, PDEA’s Prof. Ramkrishna More College, Pune, India
| | - Gulab S. Gugale
- Department of Chemistry, PDEA’s Prof. Ramkrishna More College, Pune, India
- Department of Chemistry, Haribhai V. Desai College, Pune, India
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6
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Medishetti N, Ittamalla C, Nanubolu JB, Atmakur K. Lewis Acid Zn(OTf)
2
Catalyzed Synthesis ofImidazo[1,2‐
a
]pyridines by [3+2] Annulation of 2‐Amino Pyridines and Propargylic Alcohols. ChemistrySelect 2022. [DOI: 10.1002/slct.202200063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nagaraju Medishetti
- Fluoro & Agrochemicals Department CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
| | - Chaitanya Ittamalla
- Fluoro & Agrochemicals Department CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 007 India
| | - Jagadeesh Babu Nanubolu
- Laboratory of X-ray Crystallography CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
| | - Krishnaiah Atmakur
- Fluoro & Agrochemicals Department CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
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7
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Jinkala R, K. B. SK, Rapolu V, Satish P. N, Jammula SR, Vidavalur S, Hindupur R, Tadiparthi K, Raghunadh A. Iodine promoted synthesis of pyrido[2′,1′:2,3]imidazo[4,5-c]quinoline derivatives via oxidative decarboxylation of phenylacetic acid. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2021.2019278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Rajesh Jinkala
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
- Department of Organic Chemistry and FDW, Andhra University, Visakhapatnam, India
| | - Shiva Kumar K. B.
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Venkateshwarlu Rapolu
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Nikumbh Satish P.
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Subba Rao Jammula
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | - Siddaiah Vidavalur
- Department of Organic Chemistry and FDW, Andhra University, Visakhapatnam, India
| | - Ramamohan Hindupur
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
| | | | - Akula Raghunadh
- Technology Development Centre, Custom Pharmaceutical Services, Dr. Reddy’s Laboratories Ltd, Hyderabad, India
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8
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Kumari A, Dehaen W, Chopra D, Dey S. Imidazopyridine–fluoride interaction: solvent-switched AIE effects via S⋯O conformational locking. NEW J CHEM 2022. [DOI: 10.1039/d2nj00561a] [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
Imidazopyridine-based carboxamide exhibiting the aggregation-induced emission phenomenon works effectively in fluoride ion detection through H-bond interaction and subsequent deprotonation.
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Affiliation(s)
- Annu Kumari
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad 826004, India
| | - Wim Dehaen
- Molecular Design & Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Deepak Chopra
- Crystallography & Crystal Chemistry Laboratory, Department of Chemistry, IISER Bhopal, 462066, India
| | - Swapan Dey
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad 826004, India
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9
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Shi T, Liu Y, Wang S, Lv Q, Yu B. Recyclable Carbon Nitride
Nanosheet‐Photocatalyzed
Aminomethylation of Imidazo[1,2‐
a
]pyridines in Green Solvent. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100444] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Tao Shi
- School of Biology, College of Chemistry Zhengzhou University Zhengzhou Henan 450001 China
- Institute of Chemistry Henan Academy of Sciences Zhengzhou Henan 450002 China
| | - Yu‐Ting Liu
- School of Biology, College of Chemistry Zhengzhou University Zhengzhou Henan 450001 China
| | - Shan‐Shan Wang
- Beijing Institute of Technology Analysis & Testing Center, Beijing Institute of Technology Beijing 100081 China
| | - Qi‐Yan Lv
- School of Biology, College of Chemistry Zhengzhou University Zhengzhou Henan 450001 China
| | - Bing Yu
- School of Biology, College of Chemistry Zhengzhou University Zhengzhou Henan 450001 China
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10
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Prasada Rao DE, Raju MD, Surendra J, Babu AV, Eswaraiah P, Reddy NRK, Rajendiran C, Rao MVB. A Facile and Efficient Synthesis of bis(Imidazo[1,2-a]pyridin-3-yl)methane
and Vinyl Derivatives. LETT ORG CHEM 2022. [DOI: 10.2174/1570178618666211022144225] [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
An efficient synthetic route for the novel bis-imdizo[1,2-a]pyridine-3-yl)methane (2a-k)
derivatives have been developed using acetic acid and two drops of trifluoroacetic acid at 40-45oC,
resulting in 60-72% yields. An attempt to synthesize bis(Imidazo[1,2-a]pyridin-3-yl)methyl
chloride derivatives by the reaction between two moles of imidazo[1,2-a]pyridine, one mole of
chloroacetaldehyde in acetic acid, and two drops of trifluoroacetic acid was not successful, instead
underwent dehydrohalogenation to yield vinyl derivatives (4a-d).
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Affiliation(s)
| | - Medepalli David Raju
- Department of Chemistry,
P.B. Siddhartha college of Arts and Sciences, Vijayawada, Andhra Pradesh, 520010, India
| | - Jasti Surendra
- Department of Mechanical Engineering, Prasad
V. Potluri Siddhartha Institute of Technology, Vijayawada, Andhra Pradesh, 520007, India
| | - Ala Vasu Babu
- Department of Chemistry,
Krishna University, Machilipatnam, Andhra Pradesh, 521001, India
| | - Poguri Eswaraiah
- R&D Centre, Suven Pharmaceuticals Ltd, Jeedimetla, Hyderabad, Telangana, 500055, India
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11
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Ghosh S, Laru S, Hajra A. Ortho C-H Functionalization of 2-Arylimidazo[1,2-a]pyridines. CHEM REC 2021; 22:e202100240. [PMID: 34757691 DOI: 10.1002/tcr.202100240] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/19/2021] [Accepted: 10/25/2021] [Indexed: 11/09/2022]
Abstract
C-H activation and functionalization is quite promising in recent days as the strategy offers a go-to general method for different bond formations and hence grants synthetic versatility. At the same time, imidazopyridine, a fused bicycle of imidazole moiety with pyridine ring, has a profound impact due to its ubiquitous and prodigious application in medicinal as well as material chemistry. The presence of N-1 atom in 2-arylImidazo[1,2-a]pyridine facilitates the coordination with metal catalysts leading to the formation of ortho-substituted products. This review summarizes all the articles on ortho C-H functionalization of 2-arylImidazo[1,2-a]pyridines published till August 2021.
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Affiliation(s)
- Sumit Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, India
| | - Sudip Laru
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, India
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12
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Zhang Y, Chen R, Wang Z, Wang L, Ma Y. I 2-Catalyzed Three-Component Consecutive Reaction for the Synthesis of 3-Aroylimidazo[1,2- a]- N-Heterocycles. J Org Chem 2021; 86:6239-6246. [PMID: 33835809 DOI: 10.1021/acs.joc.1c00023] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A convenient one-pot, three-component reaction has been developed for the synthesis of 3-aroylimidazo[1,2-a]-N-heterocycles from aryl ketones and 2-amino-N-heterocycles using dimethyl sulfoxide as a methylene donor. The reaction proceeds smoothly catalyzed by I2 in the presence of K2S2O8 and affords the desired products in moderate to good yields. This protocol offers significant superiority in accessing biologically active 3-aroylimidazo[1,2-a]-N-heterocycles with various substitution patterns.
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Affiliation(s)
- Yi Zhang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P. R. China.,School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P. R. China
| | - Rener Chen
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P. R. China
| | - Zhiming Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P. R. China
| | - Lei Wang
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P. R. China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P. R. China.,School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P. R. China
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13
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Althagafi I, Abdel-Latif E. Synthesis and Antibacterial Activity of New Imidazo[1,2-a]pyridines Festooned with Pyridine, Thiazole or Pyrazole Moiety. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1894185] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ismail Althagafi
- Department of Chemistry, College of Applied Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Ehab Abdel-Latif
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt
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14
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Moreno-Herrera A, Cortez-Maya S, Bocanegra-Garcia V, Banik BK, Rivera G. Recent Advances in the Development of Broad-Spectrum Antiprotozoal Agents. Curr Med Chem 2021; 28:583-606. [PMID: 32124688 DOI: 10.2174/0929867327666200303170000] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 11/05/2019] [Accepted: 01/01/2020] [Indexed: 11/22/2022]
Abstract
Infections caused by Trypanosoma brucei, Trypanosoma cruzi, Leishmania spp., Entamoeba histolytica, Giardia lamblia, Plasmodium spp., and Trichomonas vaginalis, are part of a large list of human parasitic diseases. Together, they cause more than 500 million infections per year. These protozoa parasites affect both low- and high-income countries and their pharmacological treatments are limited. Therefore, new and more effective drugs in preclinical development could improve overall therapy for parasitic infections even when their mechanisms of action are unknown. In this review, a number of heterocyclic compounds (diamidine, guanidine, quinoline, benzimidazole, thiazole, diazanaphthalene, and their derivatives) reported as antiprotozoal agents are discussed as options for developing new pharmacological treatments for parasitic diseases.
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Affiliation(s)
- Antonio Moreno-Herrera
- Laboratorio de Biotecnologia Farmaceutica, Centro de Biotecnologia Genomica, Instituto Politecnico Nacional, Reynosa 88710, Mexico
| | - Sandra Cortez-Maya
- Instituto de Quimica, Universidad Nacional Autonoma de Mexico, Cd. Universitaria, Circuito Exterior, Coyoacan, Ciudad de Mexico 04510, Mexico
| | - Virgilio Bocanegra-Garcia
- Laboratorio de Biotecnologia Farmaceutica, Centro de Biotecnologia Genomica, Instituto Politecnico Nacional, Reynosa 88710, Mexico
| | - Bimal Krishna Banik
- Department of Mathematics and Natural Sciences, College of Sciences and Human Studies, Deanship of Research, Prince Mohammad Bin Fahd University, Al Khobar, Saudi Arabia
| | - Gildardo Rivera
- Laboratorio de Biotecnologia Farmaceutica, Centro de Biotecnologia Genomica, Instituto Politecnico Nacional, Reynosa 88710, Mexico
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15
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Ma CH, Chen M, Feng ZW, Zhang Y, Wang J, Jiang YQ, Yu B. Functionalization of imidazo[1,2-a]pyridines via radical reactions. NEW J CHEM 2021. [DOI: 10.1039/d1nj00704a] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The recent advances in radical reactions for the direct functionalization of imidazo[1,2-a]pyridines are reviewed.
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Affiliation(s)
- Chun-Hua Ma
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Ming Chen
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Zhi-Wen Feng
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Yan Zhang
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Jin Wang
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Yu-Qin Jiang
- Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Research Centre of Chiral Hydroxyl Pharmaceutical
- Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials
| | - Bing Yu
- Green Catalysis Centre
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
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16
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Zhu ZQ, Guo D, Ji JJ, Zhu X, Tang J, Xie ZB, Le ZG. Visible-Light-Induced Dehydrogenative Imidoylation of Imidazo[1,2- a]pyridines with α-Amino Acid Derivatives and α-Amino Ketones. J Org Chem 2020; 85:15062-15071. [PMID: 33135893 DOI: 10.1021/acs.joc.0c01940] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new and efficient visible-light-promoted dehydrogenative cross-coupling reaction of imidazo[1,2-a]pyridines with α-amino carbonyl compounds toward imidoyl imidazo[1,2-a]pyridines is developed. A diverse range of imidazo[1,2-a]pyridines undergoes the dehydrogenative imidoylation smoothly with α-amino carbonyl compounds to access the corresponding products in satisfactory yields. We have also proposed the possible reaction mechanism based on preliminary mechanistic studies. The synthetic method has the advantages of wide substrate scope, good functional tolerance, and mild reaction conditions, which make this transformation more practical and sustainable.
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Affiliation(s)
- Zhi-Qiang Zhu
- Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang 330013, China
| | - Dong Guo
- Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang 330013, China
| | - Jiu-Jian Ji
- Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang 330013, China
| | - Xiao Zhu
- Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang 330013, China
| | - Juan Tang
- Ministry of Education Key Laboratory of Functional Small Organic Molecule, Department of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Zong-Bo Xie
- Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang 330013, China
| | - Zhang-Gao Le
- Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang 330013, China
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17
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Gudimella SK, Kaur A, Kumar R, Samanta S. CuCl2-catalyzed N O bond cleavage of oxime esters: Approach to imidazoheterocycles and furo[3,2-c]chromenyl fused imidazoles. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152147] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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18
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Brahmachari G, Nayek N, Karmakar I, Nurjamal K, Chandra SK, Bhowmick A. Series of Functionalized 5-(2-Arylimidazo[1,2- a]pyridin-3-yl)pyrimidine-2,4(1 H,3 H)-diones: A Water-Mediated Three-Component Catalyst-Free Protocol Revisited. J Org Chem 2020; 85:8405-8414. [PMID: 32469216 DOI: 10.1021/acs.joc.0c00732] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A water-mediated and catalyst-free practical method for the synthesis of a new series of pharmaceutically interesting functionalized 5-(2-arylimidazo[1,2-a]pyridin-3-yl)pyrimidine-2,4(1H,3H)-diones has been accomplished based on a one-pot multicomponent reaction between arylglyoxal monohydrates, 2-aminopyridines/2-aminopyrimidine, and barbituric/N,N-dimethylbarbituric acids under reflux conditions. The salient features of this protocol are avoidance of any additive/catalyst and toxic organic solvents, use of water as reaction medium, clean reaction profiles, operational simplicity, ease of product isolation/purification without the aid of tedious column chromatography, good to excellent yields, and high atom-economy and low E-factor.
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Affiliation(s)
- Goutam Brahmachari
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731 235, West Bengal, India
| | - Nayana Nayek
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731 235, West Bengal, India
| | - Indrajit Karmakar
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731 235, West Bengal, India
| | - Khondekar Nurjamal
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731 235, West Bengal, India
| | - Swapan K Chandra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731 235, West Bengal, India
| | - Anindita Bhowmick
- Laboratory of Natural Products & Organic Synthesis, Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731 235, West Bengal, India
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19
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Babar DA, Rode HB. Cobalt-Catalyzed Direct Arylation of Imidazo[1,2-a
]pyridine with Aryl Iodides. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000006] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Dattatraya A. Babar
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad Telangana India
- CSIR-HRDC Campus; Academy of Scientific and Innovative Research (AcSIR); Kamla Nehru Nagar 201001 Ghaziabad Uttar Pradesh India
| | - Haridas B. Rode
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; Tarnaka 500007 Hyderabad Telangana India
- CSIR-HRDC Campus; Academy of Scientific and Innovative Research (AcSIR); Kamla Nehru Nagar 201001 Ghaziabad Uttar Pradesh India
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20
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Shi T, Sun K, Chen X, Zhang Z, Huang X, Peng Y, Qu L, Yu B. Recyclable Perovskite as Heterogeneous Photocatalyst for Aminomethylation of Imidazo‐Fused Heterocycles. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901324] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Tao Shi
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Kai Sun
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Xiao‐Lan Chen
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Zhao‐Xin Zhang
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Xian‐Qiang Huang
- School of Chemistry & Chemical EngineeringLiaocheng University Liaocheng, Shandong 252059 People's Republic of China
| | - Yu‐Yu Peng
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and TransportationChangsha University of Science and Technology Changsha 410114 People's Republic of China
| | - Ling‐Bo Qu
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
| | - Bing Yu
- Green Catalysis CenterCollege of ChemistryZhengzhou University Zhengzhou 450001, People's Republic of China
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21
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A. Ismail M, M. El-Sayed W, Shaaban S, A. Abdelwahab G, S. Hamama W. A Review of Cationic Arylfurans and Their Isosteres: Synthesis and Biological Importance. CURR ORG CHEM 2020. [DOI: 10.2174/1385272823666191029114830] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The present study provides an overview of the chemistry and biological importance
of the cationic chalcophene derivatives (furans, thiophenes and selenophenes). The
summarized literature survey includes synthetic methods, reactivity and biological activities
of aryl/hetarylchalcophenes that have been reported mainly from 2001 to 2019 focusing
on monochalcophenes. A discussion demonstrating the proposed mechanisms of some
interesting synthetic routes and linking structure features to biological activities is presented.
These classes of compounds including cationic chalcophenes possess antiproliferative,
antimicrobial and antiprotozoal activities. This review highlights recent advances
for arylchalcophene derivatives and may contribute to the design and structure optimization
of new chalcophene derivatives in the future.
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Affiliation(s)
- Mohamed A. Ismail
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Wael M. El-Sayed
- Department of Zoology, Faculty of Science, University of Ain Shams, Abbassia 11566, Cairo, Egypt
| | - Saad Shaaban
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Ghada A. Abdelwahab
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Wafaa S. Hamama
- Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
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22
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Wang S, Zhang S, Liu M, Zang J, Jiang G, Ji F. Palladium-catalyzed C3-selective C–H oxidative carbonylation of imidazo[1,2-a]pyridines with CO and alcohols: a way to access esters. Org Chem Front 2020. [DOI: 10.1039/d0qo00003e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A palladium-catalyzed C3-selective C–H oxidative carbonylation for the synthesis of various esters from imidazo[1,2-a]pyridines and CO with high efficiency and high atom economy has been developed.
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Affiliation(s)
- Shoucai Wang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- People's Republic of China
| | - Siyu Zhang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- People's Republic of China
| | - Meichen Liu
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- People's Republic of China
| | - Jiawang Zang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- People's Republic of China
| | - Guangbin Jiang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- People's Republic of China
| | - Fanghua Ji
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- People's Republic of China
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23
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Lian G, Li J, Liu P, Sun P. An Approach to Quinoline-Fused Imidazopyridines via CDC of Ethers with Imidazopyridines under Metal-Free Conditions. J Org Chem 2019; 84:16346-16354. [DOI: 10.1021/acs.joc.9b02897] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Guifang Lian
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Jingyu Li
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Ping Liu
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Peipei Sun
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
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24
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Said MS, Mishra A, Pandole S, Nayak RA, Kumar P, Gajbhiye JM. Regioselective One‐Pot Synthesis of 3‐Fluoro‐Imidazo[1,2‐a]pyridines from Styrene. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900521] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Madhukar S. Said
- Division of Organic ChemistryCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune- 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Ankita Mishra
- Division of Organic ChemistryCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune- 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Satish Pandole
- Division of Organic ChemistryCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune- 411008 India
| | - Rashmi A. Nayak
- Division of Organic ChemistryCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune- 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Pradeep Kumar
- Division of Organic ChemistryCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune- 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Jayant M. Gajbhiye
- Division of Organic ChemistryCSIR-National Chemical Laboratory Dr. Homi Bhabha Road Pune- 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
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25
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Bakhta S, Kabri Y, Crozet MD, Nedjar-Kolli B, Vanelle P. Synthesis of new substituted imidazo[1,2- a]pyridinylpropenenitriles through sequential one-pot Suzuki–Miyaura/Knoevenagel reactions in aqueous medium. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1634213] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Saléha Bakhta
- Faculty of Chemistry, Laboratory of Applied Organic Chemistry, Houari Boumediene University of Sciences and Technology, Algiers, Algeria
| | - Youssef Kabri
- Laboratoire de Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, Institut de Chimie Radicalaire ICR, UMR CNRS 7273, Aix Marseille University, Marseille, France
| | - Maxime D. Crozet
- Laboratoire de Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, Institut de Chimie Radicalaire ICR, UMR CNRS 7273, Aix Marseille University, Marseille, France
| | - Bellara Nedjar-Kolli
- Faculty of Chemistry, Laboratory of Applied Organic Chemistry, Houari Boumediene University of Sciences and Technology, Algiers, Algeria
| | - Patrice Vanelle
- Laboratoire de Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, Institut de Chimie Radicalaire ICR, UMR CNRS 7273, Aix Marseille University, Marseille, France
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26
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Chenna Reddy ML, Patil VB, Nawaz Khan FR, Saravanan V. Synthesis of Imidazo[1,2‐
a
]pyridines and Imidazo[2,1‐
b
]thiazoles Attached to a Cycloalkyl or Saturated Heterocycle Containing a Tertiary Hydroxy Substitution. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3454] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- M. L. Chenna Reddy
- Medicinal ChemistryJubilant Biosys Ltd 96, Industrial Suburb, 2nd Stage, Yeshwanthpur Bangalore 560022 India
- Department of Chemistry, School of Advanced Sciences (SAS)VIT Vellore 632014 Tamil Nadu India
| | - Vineetkumar B. Patil
- Medicinal ChemistryJubilant Biosys Ltd 96, Industrial Suburb, 2nd Stage, Yeshwanthpur Bangalore 560022 India
| | | | - Vadivelu Saravanan
- Medicinal ChemistryJubilant Biosys Ltd 96, Industrial Suburb, 2nd Stage, Yeshwanthpur Bangalore 560022 India
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27
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Ji JJ, Zhu ZQ, Xiao LJ, Guo D, Zhu X, Tang J, Wu J, Xie ZB, Le ZG. Photocatalyst-free decarboxylative aminoalkylation of imidazo[1,2-a]pyridines with N-aryl glycines enabled by visible light. Org Chem Front 2019. [DOI: 10.1039/c9qo00935c] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A novel, green and efficient visible-light-promoted decarboxylative aminoalkylation reaction of imidazo[1,2-a]pyridines with N-aryl glycines has been described.
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Affiliation(s)
- Jiu-Jian Ji
- School of Chemistry
- Biology and Material Science
- East China University of Technology
- Nanchang 330013
- P. R. China
| | - Zhi-Qiang Zhu
- School of Chemistry
- Biology and Material Science
- East China University of Technology
- Nanchang 330013
- P. R. China
| | - Li-Jin Xiao
- School of Chemistry
- Biology and Material Science
- East China University of Technology
- Nanchang 330013
- P. R. China
| | - Dong Guo
- School of Chemistry
- Biology and Material Science
- East China University of Technology
- Nanchang 330013
- P. R. China
| | - Xiao Zhu
- School of Chemistry
- Biology and Material Science
- East China University of Technology
- Nanchang 330013
- P. R. China
| | - Juan Tang
- Ministry of Education Key Laboratory of Functional Small Organic Molecule
- Department of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Jun Wu
- School of Chemistry
- Biology and Material Science
- East China University of Technology
- Nanchang 330013
- P. R. China
| | - Zong-Bo Xie
- School of Chemistry
- Biology and Material Science
- East China University of Technology
- Nanchang 330013
- P. R. China
| | - Zhang-Gao Le
- School of Chemistry
- Biology and Material Science
- East China University of Technology
- Nanchang 330013
- P. R. China
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28
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Gunaganti N, Kharbanda A, Lakkaniga NR, Zhang L, Cooper R, Li HY, Frett B. Catalyst free, C-3 functionalization of imidazo[1,2-a]pyridines to rapidly access new chemical space for drug discovery efforts. Chem Commun (Camb) 2018; 54:12954-12957. [PMID: 30375586 DOI: 10.1039/c8cc07063f] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Multicomponent reactions (MCRs) are robust tools for the rapid synthesis of complex, small molecule libraries for use in drug discovery and development. By utilizing MCR chemistry, we developed a protocol to functionalize the C-3 position of imidazo[1,2-a]pyridine through a three component, decarboxylation reaction involving imidazo[1,2-a]pyridine, glyoxalic acid, and boronic acid.
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Affiliation(s)
- Naresh Gunaganti
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, 72205, USA.
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29
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Design and synthesis of 2,6-disubstituted-8-amino imidazo[1,2a]pyridines, a promising privileged structure. Bioorg Med Chem 2018; 26:3296-3307. [DOI: 10.1016/j.bmc.2018.04.057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/23/2018] [Accepted: 04/27/2018] [Indexed: 12/20/2022]
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30
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Seth SK. Structural characterization and Hirshfeld surface analysis of a Co II complex with imidazo[1,2- a]pyridine. Acta Crystallogr E Crystallogr Commun 2018; 74:600-606. [PMID: 29850075 PMCID: PMC5947470 DOI: 10.1107/s2056989018003857] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 03/05/2018] [Indexed: 11/10/2022]
Abstract
A new mononuclear tetra-hedral CoII complex, di-chlorido-bis-(imidazo[1,2-a]pyridine-κN1)cobalt(II), [CoCl2(C7H6N2)2], has been synthesized using a bioactive imidazo-pyridine ligand. X-ray crystallography reveals that the solid-state structure of the title complex exhibits both C-H⋯Cl and π-π stacking inter-actions in building supra-molecular assemblies. Indeed, the mol-ecules are linked by C-H⋯Cl inter-actions into a two-dimensional framework, with finite zero-dimensional dimeric units as building blocks, whereas π-π stacking plays a crucial role in building a supra-molecular layered network. An exhaustive investigation of the diverse inter-molecular inter-actions via Hirshfeld surface analysis enables contributions to the crystal packing of the title complex to be qu-anti-fied. The fingerprint plots associated with the Hirshfeld surface clearly display each significant inter-action involved in the structure, by qu-anti-fying them in an effective visual manner.
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31
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Sunkari S, Shaik SP, Krishna NH, Subba Rao AV, Kodiripaka BG, Alarifi A, Kamal A. Molecular Iodine-Promoted Transimination for the Synthesis of 6-Phenylpyrido[2′,1′:2,3]imidazo[4,5-c
]quinoline and 6-(Pyridin-2-yl)pyrido[2′,1′:2,3]imidazo[4,5-c
]quinolines. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700357] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Satish Sunkari
- Division of Medicinal Chemistry and Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
| | - Siddiq Pasha Shaik
- Division of Medicinal Chemistry and Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
| | - Namballa Hari Krishna
- Division of Medicinal Chemistry and Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research; Hyderabad 500036 India
| | - Ayanampudi Venkata Subba Rao
- Division of Medicinal Chemistry and Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
- Department of Pharmacology and Molecular Sciences; Johns Hopkins School of Medicine; 725 North Wolfe St. Baltimore Maryland 21205 United States
| | | | - Abdullah Alarifi
- Chemistry Department; College of Science; King Saud University; Riyadh 11451 Saudi Arabia
| | - Ahmed Kamal
- Division of Medicinal Chemistry and Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research; Hyderabad 500036 India
- Chemistry Department; College of Science; King Saud University; Riyadh 11451 Saudi Arabia
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32
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Nguyen TB, Retailleau P. Elemental Sulfur as Reaction Medium for the Synthesis of Fused Nitrogen Heterocycles by Oxidative Coupling between Cycloalkanones and Nitrogen Nucleophiles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700919] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Thanh Binh Nguyen
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; 1, avenue de la Terrasse 91198 Gif-sur-Yvette France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301; Université Paris-Sud, Université Paris-Saclay; 1, avenue de la Terrasse 91198 Gif-sur-Yvette France
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33
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Adiyala PR, Sastry KNV, Kovvuri J, Nagarajan A, Reddy VG, Sayeed IB, Nayak VL, Maurya RA, Kamal A. Visible Light Driven Coupling of 2-aminopyridines and α-Keto Vinyl Azides for the Synthesis of Imidazo[1, 2-a
]pyridines and Their Cytotoxicity. ChemistrySelect 2017. [DOI: 10.1002/slct.201700952] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Praveen Reddy Adiyala
- Medicinal Chemistry & Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007 India
| | - Kasinathuni Naga Visweswara Sastry
- Medicinal Chemistry & Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007 India
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research (NIPER); Hyderabad-500 037 India
| | - Jeshma Kovvuri
- Medicinal Chemistry & Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007 India
| | - Apoorva Nagarajan
- Medicinal Chemistry & Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007 India
| | - Velma Ganga Reddy
- Medicinal Chemistry & Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007 India
| | - Ibrahim Bin Sayeed
- Medicinal Chemistry & Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007 India
| | - Vedinthe Lakshma Nayak
- Medicinal Chemistry & Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007 India
| | - Ram Awatar Maurya
- Applied Organic Chemistry Group; Chemical Science & Technology Division; CSIR-North East Institute of Science and Technology; Jorhat Assam-785006 India
| | - Ahmed Kamal
- Medicinal Chemistry & Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500 007 India
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research (NIPER); Hyderabad-500 037 India
- Catalytic Chemistry Research Chair; Chemistry Department; College of Science; King Saud University; Riyadh 11451 Saudi Arabia
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34
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An efficient access to 2,3-diarylimidazo[1,2-a]pyridines via silver(I)-catalyzed C-H bond functionalization. MONATSHEFTE FUR CHEMIE 2017. [DOI: 10.1007/s00706-017-1950-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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35
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Jadhav SA, Shioorkar MG, Chavan OS, Sarkate AP, Shinde DB. Rapid and efficient one-pot microwave-assisted synthesis of 2-phenylimidazo[1,2-a]pyridines and 2-phenylimidazo[1,2-a]quinoline in water–PEG-400. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2016.1262040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Santosh A. Jadhav
- Department of Chemistry, Vivekanand Arts S. D. Commerce and Science College, Aurangabad, Maharashtra, India
| | - Mahesh G. Shioorkar
- Department of Chemistry, Vivekanand Arts S. D. Commerce and Science College, Aurangabad, Maharashtra, India
| | - Omprakash S. Chavan
- Department of Chemistry, Badrinarayan Barwale College, Jalna, Maharashtra, India
| | - Aniket P. Sarkate
- Department of Chemical Technology, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, Maharashtra, India
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36
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A simple and efficient synthesis of imidazolo[1,2-a]pyridines using MgO in aqueous medium. ARAB J CHEM 2016. [DOI: 10.1016/j.arabjc.2012.04.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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37
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Mu B, Li J, Zou D, Wu Y, Chang J, Wu Y. Pd-Catalyzed Tandem Cyclization via C–H Arylation and Acylation for the Construction of Polycyclic Scaffolds. Org Lett 2016; 18:5260-5263. [DOI: 10.1021/acs.orglett.6b02571] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Bing Mu
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
- The
College of Chemistry and Chemical Engineering, Zhengzhou Normal University, Zhengzhou 450044, P. R. China
- Medical
School, Huanghe Science and Technology College, Zhengzhou 450000, P. R. China
| | - Jingya Li
- Tetranov Biopharm,
LLC, Zhengzhou 450052, P. R. China
| | - Dapeng Zou
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Yusheng Wu
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
- Tetranov Biopharm,
LLC, Zhengzhou 450052, P. R. China
| | - Junbiao Chang
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Yangjie Wu
- The
College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
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38
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Aggarwal R, Singh G, Sanz D, Claramunt RM, Torralba MC, Torres MR. NBS mediated one-pot regioselective synthesis of 2,3-disubstituted imidazo[1,2- a ]pyridines and their unambiguous characterization through 2D NMR and X-ray crystallography. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.072] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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39
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Keiko NA, Vchislo NV. Synthesis of imidazo[1,2-a]pyridines from α,β-unsaturated aldehydes (microreview). Chem Heterocycl Compd (N Y) 2016. [DOI: 10.1007/s10593-016-1867-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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40
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Huo C, Tang J, Xie H, Wang Y, Dong J. CBr4 Mediated Oxidative C–N Bond Formation: Applied in the Synthesis of Imidazo[1,2-α]pyridines and Imidazo[1,2-α]pyrimidines. Org Lett 2016; 18:1016-9. [DOI: 10.1021/acs.orglett.6b00137] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Congde Huo
- Key Laboratory
of Eco-Environment-Related
Polymer Materials Ministry of Education, College of Chemistry and
Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Jing Tang
- Key Laboratory
of Eco-Environment-Related
Polymer Materials Ministry of Education, College of Chemistry and
Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Haisheng Xie
- Key Laboratory
of Eco-Environment-Related
Polymer Materials Ministry of Education, College of Chemistry and
Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Yajun Wang
- Key Laboratory
of Eco-Environment-Related
Polymer Materials Ministry of Education, College of Chemistry and
Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Jie Dong
- Key Laboratory
of Eco-Environment-Related
Polymer Materials Ministry of Education, College of Chemistry and
Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
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41
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Mu B, Wu Y, Li J, Zou D, Chang J, Wu Y. An unprecedented Pd-catalyzed decarboxylative coupling reaction of aromatic carboxylic acids in aqueous medium under air: synthesis of 3-aryl-imidazo[1,2-a]pyridines from aryl chlorides. Org Biomol Chem 2016; 14:246-50. [PMID: 26566049 DOI: 10.1039/c5ob02112j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
An efficient and practical protocol for palladium-catalyzed decarboxylative arylation of imidazo[1,2-a]pyridine-3-carboxylic acids with aryl chlorides has been developed. Note that the reaction could proceed smoothly without an additive in aqueous medium under an ambient atmosphere, and the addition of H2O could effectively promote the decarboxylative arylation. Particularly noteworthy is that these results represent the first examples of Pd-catalyzed decarboxylative coupling reactions of (hetero) aromatic carboxylic acids in aqueous medium under air, and the first successful examples of the synthesis of 3-aryl-imidazo[1,2-a]pyridines using cheap, diverse aryl chlorides and heteroaryl chlorides as the starting materials.
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Affiliation(s)
- Bing Mu
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, PR China. and The College of Chemistry and Chemical Engineering, Zhengzhou Normal University, Zhengzhou 450044, PR China
| | - Yusheng Wu
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, PR China. and Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, China
| | - Jingya Li
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, China and Tetranov Biopharm, LLC, 75 Daxue Road, Zhengzhou, PR China
| | - Dapeng Zou
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, PR China.
| | - Junbiao Chang
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, PR China.
| | - Yangjie Wu
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, PR China.
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42
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Karale UB, Kalari S, Shivakumar J, Makane VB, Babar DA, Thakare RP, Babu BN, Chopra S, Rode HB. Ligand-free Pd-catalysed decarboxylative arylation of imidazo[1,2-a]pyridine-3-carboxylic acids with aryl bromides. RSC Adv 2016. [DOI: 10.1039/c6ra12166g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A facile ligand-free method for Pd(OAc)2 catalysed decarboxylative arylation of imidazo[1,2-a]pyridine-3-carboxylic acids with hetero(aryl) bromides has been developed.
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Affiliation(s)
- Uttam B. Karale
- Department of Natural Product Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Saradhi Kalari
- Department of Natural Product Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
| | - Jala Shivakumar
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Hyderabad-500 037
- India
| | - Vitthal B. Makane
- Department of Natural Product Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Dattatraya A. Babar
- Department of Natural Product Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Ritesh P. Thakare
- Microbiology Division
- Central Drug Research Institute
- Lucknow-226 031
- India
| | - Bathini Nagendra Babu
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Hyderabad-500 037
- India
| | - Sidharth Chopra
- Microbiology Division
- Central Drug Research Institute
- Lucknow-226 031
- India
| | - Haridas B. Rode
- Department of Natural Product Chemistry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500007
- India
- Academy of Scientific and Innovative Research (AcSIR)
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43
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Goryaeva MV, Burgart YV, Kudyakova YS, Ezhikova MA, Kodess MI, Slepukhin PA, Saloutin VI. Three-Component Synthesis of 7-Hydroxy-7-polyfluoroalkylhexahydroimidazo[1,2-a]pyridin-5(1H)-ones. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500822] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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44
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Fan XS, Zhang J, Li B, Zhang XY. One-pot Sequential Reactions Featuring a Copper-catalyzed Amination Leading to Pyrido[2′,1′:2,3]imidazo[4,5-c]quinolines and Dihydropyrido[2′,1′:2,3]imidazo[4,5-c]quinolines. Chem Asian J 2015; 10:1281-5. [DOI: 10.1002/asia.201500266] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Indexed: 01/15/2023]
Affiliation(s)
- Xue-Sen Fan
- School of Chemistry and Chemical Engineering; Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals; Key Laboratory of Green Chemical Media and Reactions, Ministry of Education; Henan Key Laboratory for Environmental Pollution Control; Henan Normal University; 46 Jianshe Road, Xinxiang Henan 453007 P. R. China
| | - Ju Zhang
- School of Chemistry and Chemical Engineering; Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals; Key Laboratory of Green Chemical Media and Reactions, Ministry of Education; Henan Key Laboratory for Environmental Pollution Control; Henan Normal University; 46 Jianshe Road, Xinxiang Henan 453007 P. R. China
| | - Bin Li
- School of Chemistry and Chemical Engineering; Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals; Key Laboratory of Green Chemical Media and Reactions, Ministry of Education; Henan Key Laboratory for Environmental Pollution Control; Henan Normal University; 46 Jianshe Road, Xinxiang Henan 453007 P. R. China
| | - Xin-Ying Zhang
- School of Chemistry and Chemical Engineering; Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals; Key Laboratory of Green Chemical Media and Reactions, Ministry of Education; Henan Key Laboratory for Environmental Pollution Control; Henan Normal University; 46 Jianshe Road, Xinxiang Henan 453007 P. R. China
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45
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Efficient synthesis of 2-arylindoles, 2-arylimidazo[1,2-a]pyridines and 2-arylquinoxalines, and their bis-derivatives using [Hmim]OTf ionic liquid supported on nano-silica as a reusable catalyst. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2015. [DOI: 10.1007/s13738-015-0603-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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46
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Outlaw VK, d’Andrea FB, Townsend CA. One-pot synthesis of highly substituted N-fused heteroaromatic bicycles from azole aldehydes. Org Lett 2015; 17:1822-5. [PMID: 25815402 PMCID: PMC4500639 DOI: 10.1021/ol5036936] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient route to substituted N-fused aromatic heterocycles, including indolizines, imidazo[1,2-a]pyridines, and imidazo[1,5-a]pyridines from azole aldehydes, is reported. Wittig olefination of the aldehydes with fumaronitrile and triethylphosphine affords predominantly E-alkenes that undergo rapid cyclization upon treatment with a mild base. Substituent control of the 1-, 2-, and 3-positions of the resulting heteroaromatic bicycles is shown. Alternatively, the isolable E-alkene undergoes selective alkylation with electrophiles, followed by in situ annulation to indolizines additionally substituted at the 6-position.
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Affiliation(s)
- Victor K. Outlaw
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Felipe B. d’Andrea
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Craig A. Townsend
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
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47
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Wang Y, Frett B, McConnell N, Li HY. Metal-free, efficient hydrazination of imidazo[1,2-a]pyridine with diethyl azodicarboxylate in neutral media. Org Biomol Chem 2015; 13:2958-64. [PMID: 25611884 PMCID: PMC4675458 DOI: 10.1039/c4ob02284j] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The first example of metal-free regioselective hydrazination of imidazo[1,2-a]pyridine with diethyl azodicarboxylate is accomplished. This procedure is chemically appealing due to the high degree of functional group tolerance and efficiency in expanding the molecular diversity.
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Affiliation(s)
- Yuanxiang Wang
- Department of Pharmacology and Toxicology, College of Pharmacy, The University of Arizona, Tucson, Arizona 85721, USA.
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48
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Zhao L, Zhan H, Liao J, Huang J, Chen Q, Qiu H, Cao H. Highly regioselective palladium-catalyzed direct cross-coupling of imidazo[1,2-a]pyridines with arylboronic acids. CATAL COMMUN 2014. [DOI: 10.1016/j.catcom.2014.06.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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49
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Koubachi J, El Kazzouli S, Bousmina M, Guillaumet G. Functionalization of Imidazo[1,2-a]pyridines by Means of Metal-Catalyzed Cross-Coupling Reactions. European J Org Chem 2014. [DOI: 10.1002/ejoc.201400065] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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50
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Wang Y, Frett B, Li HY. Efficient access to 2,3-diarylimidazo[1,2-a]pyridines via a one-pot, ligand-free, palladium-catalyzed three-component reaction under microwave irradiation. Org Lett 2014; 16:3016-9. [PMID: 24854606 PMCID: PMC4059256 DOI: 10.1021/ol501136e] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Indexed: 01/18/2023]
Abstract
An expeditious one-pot, ligand-free, Pd(OAc)2-catalyzed, three-component reaction for the synthesis of 2,3-diarylimidazo[1,2-a]pyridines was developed under microwave irradiation. With the high availability of commercial reagents and great efficiency in expanding molecule diversity, this methodology is superior to the existing procedures for the synthesis of 2,3-diarylimidazo[1,2-a]pyridines analogues.
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Affiliation(s)
- Yuanxiang Wang
- Department of Pharmacology
and Toxicology, College of Pharmacy, The
University of Arizona, Tucson, Arizona 85721, United States
- The University of Arizona
Cancer Center, Tucson, Arizona 85724, United
States
| | - Brendan Frett
- Department of Pharmacology
and Toxicology, College of Pharmacy, The
University of Arizona, Tucson, Arizona 85721, United States
- The University of Arizona
Cancer Center, Tucson, Arizona 85724, United
States
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