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Acharya S, Bhaumick P, Kumar R, Choudhury LH. Iodine-Catalyzed Multicomponent Synthesis of Highly Fluorescent Pyrimidine-Linked Imidazopyridines. ACS OMEGA 2022; 7:18660-18670. [PMID: 35694517 PMCID: PMC9178772 DOI: 10.1021/acsomega.2c01332] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 04/20/2022] [Indexed: 06/15/2023]
Abstract
Herein, we report a metal-free one-pot three-component reaction of aryl methyl ketones, 2-aminopyridines, and barbituric acids for the synthesis of pyrimidine-linked imidazopyridines using a catalytic amount of molecular iodine in DMSO medium. This process involves a one-pot C-H oxidation, followed by the formation of one C-C and two C-N bonds. A wide variety of aryl methyl ketones and 2-aminopyridines were found to be suitable for this methodology. The UV and fluorescence properties of the synthesized products were studied in water and DMSO media. Most of the synthesized products exhibited very good to excellent fluorescence quantum yield. Among all the products, compounds 4p and 4q showed the maximum fluorescence quantum yield (0.36) in water medium under basic conditions and compound 4c showed the maximum fluorescence quantum yield (0.75) in DMSO medium.
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2
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Venkatesh Y, Vangala V, Mengji R, Chaudhuri A, Bhattacharya S, Datta PK, Banerjee R, Jana A, Singh NDP. One- and Two-Photon Uncaging of Carbon Monoxide (CO) with Real-Time Monitoring: On-Demand Carbazole-Based Dual CO-Releasing Platform to Test over Single and Combinatorial Approaches for the Efficient Regression of Orthotopic Murine Melanoma In Vivo. J Med Chem 2022; 65:1822-1834. [PMID: 35019659 DOI: 10.1021/acs.jmedchem.1c00750] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Herein, we report three new metal-free, photochemically active single, dual, and combinatorial CORMs (photoCORMs) based on a carbazole-fused 1,3-dioxol-2-one moiety which released one equivalent of CO, two equivalent of CO, and a combination of one equivalent of each CO and anticancer drug upon one- and two-photon excitation, respectively. The photoCORMs exhibited good cellular uptake and real-time monitoring ability of CO uncaging by a color change approach in cancerous B16F10 cells. Interestingly, the cytotoxicity assay on B16F10 cells indicated that the dual photoCORM has increased anticancer activity over the single and combinatorial photoCORMs upon irradiation. Our results also showed that CO could accelerate the effectiveness of the well-known anticancer drug (chlorambucil). Finally, the in vivo evaluation of the dual photoCORM on an established murine melanoma tumor (C57BL/6J mouse model) manifested a significant regression of tumor volume and led to significant improvement (>50%) in the overall survivability.
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Affiliation(s)
- Yarra Venkatesh
- Department of Chemistry, Indian Institute of Technology Kharagpur, West Bengal 721302, India
| | - Venugopal Vangala
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rakesh Mengji
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Amrita Chaudhuri
- Department of Chemistry, Indian Institute of Technology Kharagpur, West Bengal 721302, India
| | - Sayantan Bhattacharya
- Department of Physics, Indian Institute of Technology Kharagpur, West Bengal 721302, India
| | - Prasanta Kumar Datta
- Department of Physics, Indian Institute of Technology Kharagpur, West Bengal 721302, India
| | - Rajkumar Banerjee
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Avijit Jana
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - N D Pradeep Singh
- Department of Chemistry, Indian Institute of Technology Kharagpur, West Bengal 721302, India
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Abstract
2-Aminopyridine is a simple, low molecular weight and perfectly functionalised moiety known for the synthesis of diverse biological molecules. Many pharmaceutical companies across the globe aim to synthesise low-molecular weight molecules for use as pharmacophores against various biological targets. 2-Aminopyridine can serve as a perfect locomotive in the synthesis and pulling of such molecules towards respective pharmacological goals. The major advantage of this moiety is its simple design, which can be used to produce single products with minimum side reactions. Moreover, the exact weight of synthesised compounds is low, which enables facile identification of toxicity-causing metabolites in drug discovery programmes. This manuscript is a quick review of such pharmacophores derived from 2-aminopyridine.
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Affiliation(s)
- Ramdas Nishanth Rao
- Department of Chemistry, School of Advanced Science, Vellore Institute of Technology, Vellore 632014, India.
| | - Kaushik Chanda
- Department of Chemistry, School of Advanced Science, Vellore Institute of Technology, Vellore 632014, India.
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4
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Tiwari SK, Nazeef M, Verma A, Kumar A, Yadav V, Yadav N, Ansari S, Siddiqui IR. BF 3-etherate promoted facile access to vinyloxyimidazopyridines: a metal-free sustainable approach. Mol Divers 2021; 26:1259-1266. [PMID: 33993439 DOI: 10.1007/s11030-021-10228-0] [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: 02/23/2021] [Accepted: 04/27/2021] [Indexed: 01/31/2023]
Abstract
A convenient and metal-free synthesis of vinyloxyimidazopyridine derivatives has been attained via BF3.OEt2 promoted one-pot multicomponent approach. This procedure involves a facile coupling of 2-aminopyridine derivatives with arylglyoxal and alkyne derivatives. BF3.OEt2 complexation has successfully catalyzed the reaction at room temperature. Utilization of transition metal-free catalyst, mild reaction conditions, easy handling and operational simplicity are key features of developed process.
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Affiliation(s)
- Saurabh Kumar Tiwari
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211002, India
| | - Mohd Nazeef
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211002, India
| | - Ankit Verma
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211002, India
| | - Ankit Kumar
- Department of Chemistry, University of Delhi, New Delhi, India
| | - Vikas Yadav
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211002, India
| | - Neetu Yadav
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211002, India
| | - Saif Ansari
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211002, India
| | - I R Siddiqui
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211002, India.
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Roslan II, Ng K, Alhooshani KR, Jaenicke S, Chuah G. In/Cu Catalyzed Multiple C−N/C−C Bond Formation via Multiple Bond Cleavage in a Three Component Synthesis of Arylimidazopyridine Carboxylates. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000637] [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)
- Irwan Iskandar Roslan
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Kian‐Hong Ng
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Khalid R. Alhooshani
- Chemistry Department King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia
| | - Stephan Jaenicke
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
| | - Gaik‐Khuan Chuah
- Department of Chemistry National University of Singapore 3 Science Drive 3 Singapore 117543 Singapore
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6
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Yuan C, Zhao X, Nan G. Silver-catalyzed multicomponent reactions for the construction of γ-carbonyl-α-amino acid derivatives. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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7
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Veer B, Singh R. Facile synthesis of 2-arylimidazo[1,2-a]pyridines catalysed by DBU in aqueous ethanol. Proc Math Phys Eng Sci 2019. [DOI: 10.1098/rspa.2019.0238] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
A facile protocol for the synthesis of 2-arylimidazo[1,2-a]pyridines was developed using two-component cyclization of substituted 2-aminopyridines and substituted phenacyl bromides in 65–94% yield. The reaction was DBU catalysed using green solvent, aqueous ethanol (1 : 1 v/v) at room temperature. The atom economy of the products was calculated to be 66.25–73.41%. The developed protocol successfully exhibits a broad substrate scope, less reaction time, high to moderate yield and multigram scale synthesis.
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Affiliation(s)
- Babita Veer
- Department of Applied Chemistry, Delhi Technological University, Delhi 110 042, India
| | - Ram Singh
- Department of Applied Chemistry, Delhi Technological University, Delhi 110 042, India
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Reen GK, Kumar A, Sharma P. Recent advances on the transition-metal-catalyzed synthesis of imidazopyridines: an updated coverage. Beilstein J Org Chem 2019; 15:1612-1704. [PMID: 31435443 PMCID: PMC6664406 DOI: 10.3762/bjoc.15.165] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 06/28/2019] [Indexed: 12/21/2022] Open
Abstract
A comprehensive account of recent advances in the synthesis of imidazopyridines, assisted through transition-metal-catalyzed multicomponent reactions, C-H activation/functionalization and coupling reactions are highlighted in this review article. The basic illustration of this review comprises of schemes with concise account of explanatory text. The schemes depict the reaction conditions along with a quick look into the mechanism involved to render a deep understanding of the catalytic role. At some instances optimizations of certain features have been illustrated through tables, i.e., selectivity of catalyst, loading of the catalyst and percentage yield with different substrates. Each of the reported examples has been rigorously analyzed for reacting substrates, reaction conditions and transition metals used as the catalyst. This review will be helpful to the chemists in understanding the challenges associated with the reported methods as well as the future possibilities, both in the choice of substrates and catalysts. This review would be quite appealing to a wider range of organic chemists in academia and industrial R&D sectors working in the field of heterocyclic syntheses. In a nutshell, this review will be a guiding torch to envisage: (i) the role of various transition metals in the domain dedicated towards method development and (ii) for the modifications needed thereof in the R&D sector.
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Affiliation(s)
| | - Ashok Kumar
- School of Chemical Sciences, Devi Ahilya University, Indore, (M. P.), India
| | - Pratibha Sharma
- School of Chemical Sciences, Devi Ahilya University, Indore, (M. P.), India
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Biswas S, Qiu CS, Dawe LN, Zhao Y, Bodwell GJ. Contractive Annulation: A Strategy for the Synthesis of Small, Strained Cyclophanes and Its Application in the Synthesis of [2](6,1)Naphthaleno[1]paracyclophane. Angew Chem Int Ed Engl 2019; 58:9166-9170. [PMID: 31074924 DOI: 10.1002/anie.201904673] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Indexed: 11/07/2022]
Abstract
A new synthetic strategy (contractive annulation) for the synthesis of highly strained cyclophanes has been conceived and its viability has been demonstrated through a nine-step synthesis of [2](6,1)naphthaleno[1]paracyclophane from [2.2]paracyclophane.
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Affiliation(s)
- Sourav Biswas
- Department of Chemistry, Memorial University of Newfoundland, 283 Prince Philip Drive, St. John's, NL, A1B 3X7, Canada
| | - Christopher S Qiu
- Department of Chemistry, Memorial University of Newfoundland, 283 Prince Philip Drive, St. John's, NL, A1B 3X7, Canada
| | - Louise N Dawe
- Department of Chemistry and Biochemistry, Wilfrid Laurier University, 75 University Avenue W., Waterloo, ON, N2L 3C5, Canada
| | - Yuming Zhao
- Department of Chemistry, Memorial University of Newfoundland, 283 Prince Philip Drive, St. John's, NL, A1B 3X7, Canada
| | - Graham J Bodwell
- Department of Chemistry, Memorial University of Newfoundland, 283 Prince Philip Drive, St. John's, NL, A1B 3X7, Canada
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10
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Biswas S, Qiu CS, Dawe LN, Zhao Y, Bodwell GJ. Contractive Annulation: A Strategy for the Synthesis of Small, Strained Cyclophanes and Its Application in the Synthesis of [2](6,1)Naphthaleno[1]paracyclophane. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Sourav Biswas
- Department of ChemistryMemorial University of Newfoundland 283 Prince Philip Drive St. John's NL A1B 3X7 Canada
| | - Christopher S. Qiu
- Department of ChemistryMemorial University of Newfoundland 283 Prince Philip Drive St. John's NL A1B 3X7 Canada
| | - Louise N. Dawe
- Department of Chemistry and BiochemistryWilfrid Laurier University 75 University Avenue W. Waterloo ON N2L 3C5 Canada
| | - Yuming Zhao
- Department of ChemistryMemorial University of Newfoundland 283 Prince Philip Drive St. John's NL A1B 3X7 Canada
| | - Graham J. Bodwell
- Department of ChemistryMemorial University of Newfoundland 283 Prince Philip Drive St. John's NL A1B 3X7 Canada
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11
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Bhutia Z, Das D, Chatterjee A, Banerjee M. Efficient and "Green" Synthetic Route to Imidazo[1,2- a]pyridine by Cu(II)-Ascorbate-Catalyzed A 3-Coupling in Aqueous Micellar Media. ACS OMEGA 2019; 4:4481-4490. [PMID: 31459643 PMCID: PMC6647986 DOI: 10.1021/acsomega.8b03581] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 02/19/2019] [Indexed: 05/26/2023]
Abstract
An efficient and environmentally sustainable method for the synthesis of imidazo[1,2-a]pyridine derivatives by domino A3-coupling reaction catalyzed by Cu(II)-ascorbate was developed in aqueous micellar media in the presence of sodium dodecyl sulfate (SDS). The catalyst, a dynamic combination of Cu(II)/Cu(I), was generated in situ in the reaction mixture by mixing CuSO4 with sodium ascorbate and aided a facile 5-exo-dig cycloisomerization of alkynes with the condensation products of 2-aminopyridines and aldehydes to afford a variety of imidazo[1,2-a]pyridines in good overall yields. A simple experimental setup, water as the "green" medium, and inexpensive catalyst and auxiliary are some of the merits of this protocol.
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Affiliation(s)
| | | | | | - Mainak Banerjee
- E-mail: . Phone: +91-832-2580-347. Fax: +91-832-255-7031 (M.B.)
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12
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Yu Y, Su Z, Cao H. Strategies for Synthesis of Imidazo[1,2-a
]pyridine Derivatives: Carbene Transformations or C−H Functionalizations. CHEM REC 2018; 19:2105-2118. [DOI: 10.1002/tcr.201800168] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/22/2018] [Indexed: 01/21/2023]
Affiliation(s)
- Yue Yu
- School of Chemistry and Chemical Engineering; Guangdong Pharmaceutical University; Zhongshan 528458 P.R. of China
| | - Zhengquan Su
- School of Public Health; Guangdong Pharmaceutical University; Guangzhou 510006 P.R. of China
| | - Hua Cao
- School of Chemistry and Chemical Engineering; Guangdong Pharmaceutical University; Zhongshan 528458 P.R. of China
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