1
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Sun Z, He F, Xu Y, Lu M, Xiong H, Jiang Z, Wu C. Intramolecular Palladium(II)-Catalyzed Regioselective 6- endo or 6- exo C-H Benzannulation: An Approach for the Diversity-Oriented Synthesis of Quinolinone Derivatives from Pyridones. J Org Chem 2024; 89:7058-7064. [PMID: 38682741 DOI: 10.1021/acs.joc.4c00449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
Herein, a new intramolecular palladium(II)-catalyzed regioselective 6-endo-trig or 6-exo-trig annulation through direct C-H activation is presented as a method for the diversity-oriented synthesis of highly substituted quinolinones from pyridones. The reaction occurs under mild conditions and exhibits excellent regioselectivity, good functional group tolerance, and broad applications. This innovative approach has been successfully utilized in the synthesis of Glycopentanolone A and an intermediate of (R)-(+)-Tipifarnib.
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Affiliation(s)
- Ziyi Sun
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, P. R. China
| | - Fengya He
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, P. R. China
| | - Yiwei Xu
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, P. R. China
| | - Mingxiang Lu
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, P. R. China
| | - Hujie Xiong
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, P. R. China
| | - Zibin Jiang
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, P. R. China
| | - Chenggui Wu
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, P. R. China
- Anhui Province Key Laboratory of Environmental Hormone and Reproduction, School of Biological and Food Engineering, Fuyang Normal University, Fuyang, Anhui 236037, P. R. China
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2
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Vachlioti E, Ferikoglou S, Georgiou X, Karampatsis V, Afratis K, Bafiti V, Savard M, Papaioannou D, Katsila T, Gobeil F, Rassias G. Development of a multigram synthesis of the bradykinin receptor 2 agonist FR-190997 and analogs thereof. Arch Pharm (Weinheim) 2023; 356:e2200610. [PMID: 36720040 DOI: 10.1002/ardp.202200610] [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: 11/28/2022] [Revised: 12/24/2022] [Accepted: 01/13/2023] [Indexed: 02/02/2023]
Abstract
Using Fujisawa's B2R agonist FR-190997, we recently demonstrated for the first time that agonism at the bradykinin receptor type 2 (B2R) produces substantial antiproliferative effects. FR-190997 elicited an EC50 of 80 nM in the triple-negative breast cancer cell line MDA-MB-231, a much superior performance to that exhibited by most approved breast cancer drugs. Consequently, we initiated a program aiming primarily at synthesizing adequate quantities of FR-190997 to support further in vitro and in vivo studies toward its repurposing for various cancers and, in parallel, enable the generation of novel FR-190997 analogs for an SAR study. Prerequisite for this endeavor was to address the synthetic challenges associated with the FR-190997 scaffold, which the Fujisawa chemists had constructed in 20 steps, 13 of which required chromatographic purification. We succeeded in developing a 17-step synthesis amenable to late-stage diversification that eliminated all chromatography and enabled access to multigram quantities of FR-190997 and novel derivatives thereof, supporting further anticancer research based on B2R agonists.
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Affiliation(s)
- Eleanna Vachlioti
- Department of Chemistry, University of Patras, Rio University Campus, Patra, Greece
| | - Spyridon Ferikoglou
- Department of Chemistry, University of Patras, Rio University Campus, Patra, Greece
| | - Xenios Georgiou
- Department of Chemistry, University of Patras, Rio University Campus, Patra, Greece
| | - Vasilios Karampatsis
- Department of Chemistry, University of Patras, Rio University Campus, Patra, Greece
| | - Konstantinos Afratis
- Department of Chemistry, University of Patras, Rio University Campus, Patra, Greece
| | - Vivi Bafiti
- Institute of Chemical Biology, National Hellenic Research Foundation, Athens, Greece
| | - Martin Savard
- Institute of Pharmacology, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | | | - Theodora Katsila
- Institute of Chemical Biology, National Hellenic Research Foundation, Athens, Greece
| | - Fernand Gobeil
- Institute of Pharmacology, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Gerasimos Rassias
- Department of Chemistry, University of Patras, Rio University Campus, Patra, Greece
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3
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Wang S, Chen Y, Chen D, Ye W, Yao L, Huang Z, Zhou Z. Synthesis, crystal structure and vibrational properties studies of (S)-N-(1-phenylethyl)-6-(4-(trifluoromethoxy)phenyl)imidazo[1,2-a]pyridine-2-carboxamide. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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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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5
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Chitrakar R, Rawat D, Sistla R, Vadithe LN, Subbarayappa A. Design, synthesis and anticancer activity of sulfenylated imidazo-fused heterocycles. Bioorg Med Chem Lett 2021; 49:128307. [PMID: 34363936 DOI: 10.1016/j.bmcl.2021.128307] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 07/29/2021] [Accepted: 07/31/2021] [Indexed: 01/06/2023]
Abstract
We report herein, the design, synthesis and study of anticancer properties of sulfenylated 2-phenylimidazo[1,2-a]pyridines and their analogues. A set of twenty sulfenylated imidazo[1, 2-a]pyridine derivatives were synthesized. Whereby elusive amendments to the imidazo[1,2-a]pyridine motif confer dramatic changes in functional affinity of a novel action to modulate anticancer activity in seven different human cancer cell lines i.e.: MDA MB 231 (breast), HepG2 (liver), Hela (cervical), A549 (lung), U87MG (glioblastoma), SKMEL-28 (skin melanoma) and DU-145 (prostate) by employing MTT assay. Among the series, compounds 4e (naphthalene), 4f (styrene) and 4h (thiomethyl) showed potent activity towards human liver cancer cells HepG2. Cell cycle analysis results revealed that these compounds arrested the cell cycle at G2/M phase and induced apoptosis in human liver cancer cells HepG2. It was further confirmed by Hoechst staining, Measurement of mitochondrial membrane potential (ΔΨm) and Annexin V-FITC assay.
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Affiliation(s)
- Ravi Chitrakar
- Academy of Scientific & Innovative Research, Natural Products and Green Chemistry Division, CSIR-Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364002, Gujarat, India
| | - Deepa Rawat
- Academy of Scientific & Innovative Research, Natural Products and Green Chemistry Division, CSIR-Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364002, Gujarat, India
| | - Ramakrishna Sistla
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India.
| | - Lakshma Nayak Vadithe
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - Adimurthy Subbarayappa
- Academy of Scientific & Innovative Research, Natural Products and Green Chemistry Division, CSIR-Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364002, Gujarat, India.
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6
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Perez JJ. Exploiting Knowledge on Structure-Activity Relationships for Designing Peptidomimetics of Endogenous Peptides. Biomedicines 2021; 9:651. [PMID: 34200402 PMCID: PMC8229937 DOI: 10.3390/biomedicines9060651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 12/01/2022] Open
Abstract
Endogenous peptides are important mediators in cell communication, being consequently involved in many physiological processes. Their use as therapeutic agents is limited due to their poor pharmacokinetic profile. To circumvent this drawback, alternative diverse molecules based on the stereochemical features that confer their activity can be synthesized, using them as guidance; from peptide surrogates provided with a better pharmacokinetic profile, to small molecule peptidomimetics, through cyclic peptides. The design process requires a competent use of the structure-activity results available on individual peptides. Specifically, it requires synthesis and analysis of the activity of diverse analogs, biophysical information and computational work. In the present work, we show a general framework of the process and show its application to two specific examples: the design of selective AT1 antagonists of angiotensin and the design of selective B2 antagonists of bradykinin.
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Affiliation(s)
- Juan J Perez
- Department of Chemical Engineering, Universitat Politecnica de Catalunya, 08028 Barcelona, Spain
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7
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Bhutia Z, Panjikar PC, Iyer S, Chatterjee A, Banerjee M. Iodine Promoted Efficient Synthesis of 2-Arylimidazo[1,2- a]pyridines in Aqueous Media: A Comparative Study between Micellar Catalysis and an "On-Water" Platform. ACS OMEGA 2020; 5:13333-13343. [PMID: 32548520 PMCID: PMC7288711 DOI: 10.1021/acsomega.0c01478] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 05/12/2020] [Indexed: 05/12/2023]
Abstract
In a new and environmentally sustainable approach, a series of 2-arylimidazo[1,2-a]pyridine derivatives were synthesized in aqueous media in the presence of iodine as a catalyst. The reaction proceeded by condensation of various aryl methyl ketones with 2-aminopyridines to afford 2-arylimidazo[1,2-a]pyridines in good overall yields. Although several of the reactions were efficiently performed "on water", the addition of a surfactant, namely, sodium dodecyl sulphate , was found effective in terms of substrate scope and yield enhancement. Both methods were successfully used for the gram-scale synthesis of a marketed drug, zolimidine. The simple experimental setup, water as "green" media, and inexpensive catalyst are some of the merits of this protocol.
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Affiliation(s)
- Zigmee
T. Bhutia
- Department
of Chemistry, BITS Pilani-K. K. Birla Goa
Campus, NH 17 B Bypass
Road, Zuarinagar, Sancoale 403726, Goa, India
| | - Padmini C. Panjikar
- Department
of Chemistry, BITS Pilani-K. K. Birla Goa
Campus, NH 17 B Bypass
Road, Zuarinagar, Sancoale 403726, Goa, India
- Parvatibai
Chowgule College of Arts & Science (Autonomous), Margao 403602, Goa, India
| | - Shruti Iyer
- Department
of Chemistry, BITS Pilani-K. K. Birla Goa
Campus, NH 17 B Bypass
Road, Zuarinagar, Sancoale 403726, Goa, India
| | - Amrita Chatterjee
- Department
of Chemistry, BITS Pilani-K. K. Birla Goa
Campus, NH 17 B Bypass
Road, Zuarinagar, Sancoale 403726, Goa, India
- . Phone: +91-832-2580-320. Fax: +91-832-255-7031
| | - Mainak Banerjee
- Department
of Chemistry, BITS Pilani-K. K. Birla Goa
Campus, NH 17 B Bypass
Road, Zuarinagar, Sancoale 403726, Goa, India
- . Phone: +91-832-2580-347. Fax: +91-832-255-7031
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8
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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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9
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One-Pot NBS-Promoted Synthesis of Imidazoles and Thiazoles from Ethylarenes in Water. Molecules 2019; 24:molecules24050893. [PMID: 30836604 PMCID: PMC6429224 DOI: 10.3390/molecules24050893] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 02/22/2019] [Accepted: 02/26/2019] [Indexed: 11/16/2022] Open
Abstract
A facile and eco-friendly method has been developed for the synthesis of imidazoles and thiazoles from ethylarenes in water. The reaction proceeds via in situ formation of α-bromoketone using NBS as a bromine source as well as an oxidant, followed by trapping with suitable nucleophiles to provide the corresponding products in good yields under metal-free conditions.
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10
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Kumar R, Ravi C, Rawat D, Adimurthy S. Base-Promoted Transition-Metal-Free Arylation of Imidazo-Fused Heterocycles with Diaryliodonium Salts. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800286] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Rahul Kumar
- CSIR-Central Salt & Marine Chemicals Research Institute; Academy of Scientific & Innovative Research; G. B. Marg 364 002 Bhavnagar Gujarat India
| | - Chitrakar Ravi
- CSIR-Central Salt & Marine Chemicals Research Institute; Academy of Scientific & Innovative Research; G. B. Marg 364 002 Bhavnagar Gujarat India
| | - Deepa Rawat
- CSIR-Central Salt & Marine Chemicals Research Institute; Academy of Scientific & Innovative Research; G. B. Marg 364 002 Bhavnagar Gujarat India
| | - Subbarayappa Adimurthy
- CSIR-Central Salt & Marine Chemicals Research Institute; Academy of Scientific & Innovative Research; G. B. Marg 364 002 Bhavnagar Gujarat India
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11
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Bhagat SB, Telvekar VN. NBS mediated protocol for the synthesis of N -bridged fused heterocycles in water. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.08.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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12
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Ravi C, Adimurthy S. Synthesis of Imidazo[1,2‐a]pyridines: C‐H Functionalization in the Direction of C‐S Bond Formation. CHEM REC 2017; 17:1019-1038. [DOI: 10.1002/tcr.201600146] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 02/27/2017] [Indexed: 01/22/2023]
Affiliation(s)
- Chitrakar Ravi
- Natural Products & Green ChemistryCSIR-Central Salt & Marine Chemicals Research Institute G.B. Marg, Bhavnagar-364002 Gujarat India
| | - Subbarayappa Adimurthy
- Natural Products & Green ChemistryCSIR-Central Salt & Marine Chemicals Research Institute G.B. Marg, Bhavnagar-364002 Gujarat India
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13
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Waseem MA, Rahila, Ibad A, Ibad F, Neha S, Nazaan J, Saquib M, Siddiqui IR. Efficient [bmIm]OH Catalyzed Diastereoselective Synthesis of Imidazopyridine via Microwave Activation in Aqueous Media. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2679] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Malik A. Waseem
- Laboratory of Green Synthesis, Department of Chemistry; University of Allahabad; Allahabad 211002 India
| | - Rahila
- Laboratory of Green Synthesis, Department of Chemistry; University of Allahabad; Allahabad 211002 India
| | - Afshan Ibad
- Laboratory of Green Synthesis, Department of Chemistry; University of Allahabad; Allahabad 211002 India
| | - Farah Ibad
- Laboratory of Green Synthesis, Department of Chemistry; University of Allahabad; Allahabad 211002 India
| | - Shamshun Neha
- Laboratory of Green Synthesis, Department of Chemistry; University of Allahabad; Allahabad 211002 India
| | - Juhi Nazaan
- Laboratory of Green Synthesis, Department of Chemistry; University of Allahabad; Allahabad 211002 India
| | - Mohammad Saquib
- Laboratory of Green Synthesis, Department of Chemistry; University of Allahabad; Allahabad 211002 India
| | - I. R. Siddiqui
- Laboratory of Green Synthesis, Department of Chemistry; University of Allahabad; Allahabad 211002 India
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14
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Maddi RR, Shirsat PK, Kumar S, Meshram HM. N-Bromosuccinimide Promoted Direct Thiolation of Imidazoheteroaryl C-H bonds with Disulfides. ChemistrySelect 2017. [DOI: 10.1002/slct.201601460] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
| | | | - Santosh Kumar
- Indian Institute of chemical technology; Tarnaka, Hyderabad India
| | - H. M. Meshram
- Indian Institute of chemical technology; Tarnaka, Hyderabad India
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15
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Mani GS, Shaik SP, Tangella Y, Bale S, Godugu C, Kamal A. A facile I2-catalyzed synthesis of imidazo[1,2-a]pyridines via sp3 C–H functionalization of azaarenes and evaluation of anticancer activity. Org Biomol Chem 2017; 15:6780-6791. [DOI: 10.1039/c7ob01384a] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A three component synthetic protocol has been developed for the synthesis of medicinally important imidazo[1,2-a]pyridines via the iodine-catalyzed oxidative amination of benzylic C–H bonds of azaarenes. The synthesized compounds were evaluated for their anti-cancer activity.
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Affiliation(s)
- Geeta Sai Mani
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad-500 037
- India
- Medicinal Chemistry & Pharmacology
| | - Siddiq Pasha Shaik
- Medicinal Chemistry & Pharmacology
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Yellaiah Tangella
- Medicinal Chemistry & Pharmacology
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Swarna Bale
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad-500 037
- India
| | - Chandraiah Godugu
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad-500 037
- India
| | - Ahmed Kamal
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad-500 037
- India
- Medicinal Chemistry & Pharmacology
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16
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Thenarukandiyil R, Thrikkykkal H, Choudhury J. Rhodium(III)-Catalyzed Nonaromatic sp2 C–H Activation/Annulation Using NHC as a Directing and Functionalizable Group. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00530] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ranjeesh Thenarukandiyil
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462 066, India
| | - Hridya Thrikkykkal
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462 066, India
| | - Joyanta Choudhury
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462 066, India
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17
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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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18
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Karamthulla S, Khan MN, Choudhury LH. Microwave-assisted synthesis of novel 2,3-disubstituted imidazo[1,2-a]pyridines via one-pot three component reactions. RSC Adv 2015. [DOI: 10.1039/c4ra16298f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An expeditious one-pot, metal-free, three-component reaction of arylglyoxals, cyclic 1,3-dicarbonyls and 2-aminopyridines in the presence of molecular iodine under microwave irradiation is reported.
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Affiliation(s)
- Shaik Karamthulla
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna-800013
- India
| | - Md. Nasim Khan
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna-800013
- India
| | - Lokman H. Choudhury
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna-800013
- India
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19
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Maleki A. One-pot three-component synthesis of pyrido[2′,1′:2,3]imidazo[4,5-c]isoquinolines using Fe3O4@SiO2–OSO3H as an efficient heterogeneous nanocatalyst. RSC Adv 2014. [DOI: 10.1039/c4ra10856f] [Citation(s) in RCA: 139] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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20
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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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21
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Dylong A, Sowa M, Goldeman W, Ślepokura K, Duczmal M, Wojciechowska A, Matczak-Jon E. Imidazo[1,2-a]pyridin-2-ylacetic acid and two pairs of isomorphous ML2(H2O)2 dihydrates (M=Ni, Co and Mn, Cd) based on its anion: Syntheses, crystal structures and properties. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.03.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Ravi C, Chandra Mohan D, Adimurthy S. N-Chlorosuccinimide-Promoted Regioselective Sulfenylation of Imidazoheterocycles at Room Temperature. Org Lett 2014; 16:2978-81. [DOI: 10.1021/ol501117z] [Citation(s) in RCA: 156] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Chitrakar Ravi
- Academy of Scientific & Innovative Research, Scale up & Process Engineering Unit, CSIR−Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364 002, Gujarat, India
| | - Darapaneni Chandra Mohan
- Academy of Scientific & Innovative Research, Scale up & Process Engineering Unit, CSIR−Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364 002, Gujarat, India
| | - Subbarayappa Adimurthy
- Academy of Scientific & Innovative Research, Scale up & Process Engineering Unit, CSIR−Central Salt & Marine Chemicals Research Institute, G.B. Marg, Bhavnagar 364 002, Gujarat, India
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23
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Maleki A. Synthesis of Imidazo[1,2-a]pyridines Using Fe3O4@SiO2as an Efficient Nanomagnetic Catalystviaa One-Pot Multicomponent Reaction. Helv Chim Acta 2014. [DOI: 10.1002/hlca.201300244] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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24
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Dong L, Huang JR, Qu CH, Zhang QR, Zhang W, Han B, Peng C. Rhodium(III)-catalyzed vinylic sp2 C-H bond functionalization: efficient synthesis of pyrido[1,2-α]benzimidazoles and imidazo[1,2-α]pyridines. Org Biomol Chem 2014; 11:6142-9. [PMID: 23925493 DOI: 10.1039/c3ob41177j] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A simple approach for synthesis of novel aza-fused scaffolds such as pyrido[1,2-α]benzimidazoles and imidazo[1,2-α]pyridines was developed by Rh(III)-catalyzed direct oxidative coupling between alkenes and unactivated alkynes without an extra directing group. The method would allow a broad substrate scope, providing fused heterocycles with potential biological properties.
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Affiliation(s)
- Lin Dong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Department of Medicinal Chemistry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
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25
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Maleki A, Rezayan AH. Synthesis of pyrido[2′,1′:2,3]imidazo[4,5-c]isoquinolines via a one-pot, three-component reaction. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.139] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Siddiqui I, Rai P, Rahila, Srivastava A, Shamim S. Synthesis of imidazo[1,2-a]pyridine in the presence of iodine–water catalytic system. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.088] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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27
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Guchhait SK, Chaudhary V. Desilylative activation of TMSCN in chemoselective Strecker–Ugi type reaction: functional fused imidazoles as building blocks as an entry route to annulated purines. Org Biomol Chem 2014; 12:6694-705. [DOI: 10.1039/c4ob00882k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Nucleophilic activation of TMSCN as an isocyanide equivalent by DABCO–THF in the Strecker–Ugi reaction facilitates the synthesis of functional imidazoles which, as building blocks, afford access to C8–N9 annulated purines.
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Affiliation(s)
- Sankar K. Guchhait
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Mohali – 160062, India
| | - Vikas Chaudhary
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Mohali – 160062, India
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28
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Chen X, Zhu L, Fang L, Yan S, Lin J. Catalyst-free concise synthesis of imidazo[1,2-a]pyrrolo[3,4-e]pyridine derivatives. RSC Adv 2014. [DOI: 10.1039/c3ra45485a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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29
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Bazin MA, Marhadour S, Tonnerre A, Marchand P. Exploration of versatile reactions on 2-chloro-3-nitroimidazo[1,2-a]pyridine: expanding structural diversity of C2- and C3-functionalized imidazo[1,2-a]pyridines. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.113] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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30
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Prasanna P, Kumar SV, Gunasekaran P, Perumal S. Facile three-component domino reactions for the synthesis of 2-arylimidazo[1,2-a]pyridines and 2-arylimidazo[2,1-a]isoquinolines. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.126] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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31
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Attanasi OA, Bianchi L, Campisi LA, Crescentini LD, Favi G, Mantellini F. A Novel Solvent-Free Approach to Imidazole Containing Nitrogen-Bridgehead Heterocycles. Org Lett 2013; 15:3646-9. [DOI: 10.1021/ol4015267] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Orazio A. Attanasi
- Department of Biomolecular Sciences, Section of Organic Chemistry and Organic Natural Compounds, University of Urbino “Carlo Bo”, Via I Maggetti 24, 61029 Urbino (PU), Italy
| | - Luca Bianchi
- Department of Biomolecular Sciences, Section of Organic Chemistry and Organic Natural Compounds, University of Urbino “Carlo Bo”, Via I Maggetti 24, 61029 Urbino (PU), Italy
| | - Linda A. Campisi
- Department of Biomolecular Sciences, Section of Organic Chemistry and Organic Natural Compounds, University of Urbino “Carlo Bo”, Via I Maggetti 24, 61029 Urbino (PU), Italy
| | - Lucia De Crescentini
- Department of Biomolecular Sciences, Section of Organic Chemistry and Organic Natural Compounds, University of Urbino “Carlo Bo”, Via I Maggetti 24, 61029 Urbino (PU), Italy
| | - Gianfranco Favi
- Department of Biomolecular Sciences, Section of Organic Chemistry and Organic Natural Compounds, University of Urbino “Carlo Bo”, Via I Maggetti 24, 61029 Urbino (PU), Italy
| | - Fabio Mantellini
- Department of Biomolecular Sciences, Section of Organic Chemistry and Organic Natural Compounds, University of Urbino “Carlo Bo”, Via I Maggetti 24, 61029 Urbino (PU), Italy
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32
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Abstract
Imidazo[1,2-a]pyridine-based tosylhydrazone was prepared and treated with K2CO3in dioxane at 110°C to generate the corresponding carbenein situ. It was coupled with a variety of aryl alcohols in one pot to obtain a series of imidazo[1,2-a]pyridine derivatives possessing aryl ether moiety at C-3 position.
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33
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Pericherla K, Kaswan P, Khedar P, Khungar B, Parang K, Kumar A. Copper catalyzed tandem oxidative C–H amination/cyclizations: Direct access to imidazo[1,2-a]pyridines. RSC Adv 2013. [DOI: 10.1039/c3ra43889a] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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34
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Potikha LM, Turelik AR, Shelepyuk AV, Kovtunenko VA. Dealkylation of quaternary 1-alkylazolo[a]pyridinium salts. Chem Heterocycl Compd (N Y) 2012. [DOI: 10.1007/s10593-012-0995-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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35
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Pericherla K, Khungar B, Kumar A. One-pot, three-component synthesis of 1-amidomethyl-imidazo[1,2-a]pyridines catalyzed by ytterbium triflate. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.12.121] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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36
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Cao H, Lin Y, Zhan H, Du Z, Lin X, Liang QM, Zhang H. Highly regioselective C–H bond functionalization: palladium-catalyzed arylation of substituted imidazo[1,2-a]pyridine with aryl chlorides. RSC Adv 2012. [DOI: 10.1039/c2ra20366a] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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37
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Reddy BS, Sivaramakrishna Reddy P, Jayasudhan Reddy Y, Yadav J. InBr3-catalyzed three-component, one-pot synthesis of imidazo[1,2-a]pyridines. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.08.110] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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38
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Husinec S, Markovic R, Petkovic M, Nasufovic V, Savic V. A Base Promoted Cyclization of N-Propargylaminopyridines. Synthesis of Imidazo[1,2-a]pyridine Derivatives. Org Lett 2011; 13:2286-9. [DOI: 10.1021/ol200508x] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Suren Husinec
- Institute of Chemistry, Technology and Metallurgy, Centre for Chemistry, P.O. Box 815, Njegoseva 12, 11000 Belgrade, Serbia, University of Belgrade, Faculty of Chemistry, Studentski Trg 12-16, 11000 Belgrade, Serbia, and University of Belgrade, Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Rade Markovic
- Institute of Chemistry, Technology and Metallurgy, Centre for Chemistry, P.O. Box 815, Njegoseva 12, 11000 Belgrade, Serbia, University of Belgrade, Faculty of Chemistry, Studentski Trg 12-16, 11000 Belgrade, Serbia, and University of Belgrade, Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Milos Petkovic
- Institute of Chemistry, Technology and Metallurgy, Centre for Chemistry, P.O. Box 815, Njegoseva 12, 11000 Belgrade, Serbia, University of Belgrade, Faculty of Chemistry, Studentski Trg 12-16, 11000 Belgrade, Serbia, and University of Belgrade, Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Veselin Nasufovic
- Institute of Chemistry, Technology and Metallurgy, Centre for Chemistry, P.O. Box 815, Njegoseva 12, 11000 Belgrade, Serbia, University of Belgrade, Faculty of Chemistry, Studentski Trg 12-16, 11000 Belgrade, Serbia, and University of Belgrade, Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Vladimir Savic
- Institute of Chemistry, Technology and Metallurgy, Centre for Chemistry, P.O. Box 815, Njegoseva 12, 11000 Belgrade, Serbia, University of Belgrade, Faculty of Chemistry, Studentski Trg 12-16, 11000 Belgrade, Serbia, and University of Belgrade, Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
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40
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Albrecht Ł, Albrecht A, Ransborg LK, Jørgensen KA. Asymmetric organocatalytic [3 + 2]-annulation strategy for the synthesis of N-fused heteroaromatic compounds. Chem Sci 2011. [DOI: 10.1039/c1sc00122a] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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41
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Herath A, Dahl R, Cosford NDP. Fully automated continuous flow synthesis of highly functionalized imidazo[1,2-a] heterocycles. Org Lett 2010; 12:412-5. [PMID: 20038130 PMCID: PMC2814065 DOI: 10.1021/ol902433a] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first continuous flow synthesis of imidazo[1,2-a]pyridine-2-carboxylic acids directly from 2-aminopyridines and bromopyruvic acid has been developed, representing a significant advance over the corresponding in-flask method. The process was applied to the multistep synthesis of imidazo[1,2-a]pyridine-2-carboxamides, including a Mur ligase inhibitor, using a two microreactor, multistep continuous flow process without isolation of intermediates.
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Affiliation(s)
- Ananda Herath
- Conrad Prebys Center for Chemical Genomics, Burnham Institute for
Medical Research 10901 North Torrey Pines Road, La Jolla, CA 92037
| | - Russell Dahl
- Conrad Prebys Center for Chemical Genomics, Burnham Institute for
Medical Research 10901 North Torrey Pines Road, La Jolla, CA 92037
| | - Nicholas D. P. Cosford
- Conrad Prebys Center for Chemical Genomics, Burnham Institute for
Medical Research 10901 North Torrey Pines Road, La Jolla, CA 92037
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42
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Yadav LDS, Awasthi C. Efficient one-pot synthetic protocols for iminosugar-bearing imidazo[1,2-a]pyridines from carbohydrates. Carbohydr Res 2010; 345:318-23. [DOI: 10.1016/j.carres.2009.11.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2009] [Revised: 11/08/2009] [Accepted: 11/10/2009] [Indexed: 10/20/2022]
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43
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Martínez-Urbina MA, Zentella A, Vilchis-Reyes MA, Guzmán A, Vargas O, Ramírez Apan MT, Ventura Gallegos JL, Díaz E. 6-Substituted 2-(N-trifluoroacetylamino)imidazopyridines induce cell cycle arrest and apoptosis in SK-LU-1 human cancer cell line. Eur J Med Chem 2009; 45:1211-9. [PMID: 20045224 DOI: 10.1016/j.ejmech.2009.11.049] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2009] [Revised: 11/19/2009] [Accepted: 11/23/2009] [Indexed: 12/19/2022]
Abstract
A series of 6-substituted 2-(N-trifluoroacetylamino)imidazopyridines have been synthesized and their bioactivities were evaluated. Compounds 6a, 6c, and 11a were the most active compounds with modest cytotoxic activity against six human cancer cell lines U251 (glioma), PC-3 (prostate), K-562 (leukemia), HCT-15 (colon), MCF7 (breast) and SK-LU-1 (lung). The cell cycle analysis showed that compounds 6a, 6c, and 11a induce a G2/M phase cell cycle arrest on SK-LU-1 cell line where inhibition of CDK-1 and CDK-2 may be implicated.
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Affiliation(s)
- Miguel Angel Martínez-Urbina
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México 04510, DF, México
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44
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Kianmehr E, Ghanbari M, Niri MN, Faramarzi R. Novel One-Pot Three Component Reaction for the Synthesis of [2-(Alkylsulfanyl)imidazo[1,2-a]pyridin-3-yl](aryl)methanone. ACTA ACUST UNITED AC 2009; 12:41-4. [DOI: 10.1021/cc900103r] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ebrahim Kianmehr
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran
| | - Mohammad Ghanbari
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran
| | - Mehri Nadiri Niri
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran
| | - Reza Faramarzi
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Iran
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45
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Bawolak MT, Fortin S, Bouthillier J, Adam A, Gera L, C-Gaudreault R, Marceau F. Effects of inactivation-resistant agonists on the signalling, desensitization and down-regulation of bradykinin B(2) receptors. Br J Pharmacol 2009; 158:1375-86. [PMID: 19785654 DOI: 10.1111/j.1476-5381.2009.00409.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND AND PURPOSE A peptide bradykinin (BK) B(2) receptor agonist partially resistant to degradation, B-9972, down-regulates this receptor subtype. We have used another recently described non-peptide agonist, compound 47a, as a tool to study further the effects of metabolically more stable and thus persistent, agonists of the BK B(2) receptor on signalling, desensitization and down-regulation of this receptor. EXPERIMENTAL APPROACH AND KEY RESULTS Compound 47a was a partial agonist at the B(2) receptor in the human umbilical vein, where it shared with B-9972 a very slow relaxation on washout, and in HEK 293 cell lines expressing tagged forms [myc, green fluorescent protein (GFP)] of the rabbit B(2) receptor. Compound 47a desensitized the umbilical vein to BK. In the cellular systems, the inactivation-resistant agonists induced [Ca(2+)](i) transients as brief as those of BK but affected other functions with a longer duration than BK [12 h; receptor endocytosis, endosomal beta-arrestin(1/2) translocation, protein kinase C-dependent extracellular signal-regulated kinases (ERK)1/2 phosphorylation and c-Fos expression]. The B(2) receptor-GFP was degraded in cells exposed to B-9972 or compound 47a for 12 h. The non-peptide B(2) receptor antagonist LF 16-0687 prevented all effects of compound 47a, which were also absent in cells lacking recombinant B(2) receptors. CONCLUSION AND IMPLICATIONS Inactivation-resistant agonists revealed a long-lasting assembly of the agonist-B(2) receptor-beta-arrestin complexes in endosomal structures and induce 'biased signalling' (in terms of activation of ERK and c-Fos) as a function of time. Further, B-9972 and compound 47a, unlike BK, efficiently down-regulated BK B(2) receptors.
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Affiliation(s)
- Marie-Thérèse Bawolak
- Centre de recherche en rhumatologie et immunologie, Centre Hospitalier Universitaire de Québec and Department of Medicine, Université Laval, Québec, QC, Canada
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46
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Synthesis of a Novel Series of Imidazo[1,2-α]pyridines as Acyl-CoA: Cholesterol Acyltransferase (ACAT) Inhibitors. B KOREAN CHEM SOC 2009. [DOI: 10.5012/bkcs.2009.30.6.1297] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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47
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SHAABANI A, SOLEIMANI E, SARVARY A, REZAYAN AH, MALEKI A. Tin(II) Chloride Dihydrate Catalyzed Groebke Condensation: An Efficient Protocol for the Synthesis of 3-Aminoimidazo[1,2-a]pyridines. CHINESE J CHEM 2009. [DOI: 10.1002/cjoc.200990060] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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48
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Ammonium chloride catalyzed one-pot synthesis of imidazo[1,2-a]pyridines. MONATSHEFTE FUR CHEMIE 2008. [DOI: 10.1007/s00706-008-0872-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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49
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Yadav J, Subba Reddy B, Gopal Rao Y, Srinivas M, Narsaiah A. Cu(OTf)2-catalyzed synthesis of imidazo[1,2-a]pyridines from α-diazoketones and 2-aminopyridines. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.08.090] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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50
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Koubachi J, El Kazzouli S, Berteina-Raboin S, Mouaddib A, Guillaumet G. Synthesis of Polysubstituted Imidazo[1,2-a]pyridines via Microwave-Assisted One-Pot Cyclization/Suzuki Coupling/Palladium-Catalyzed Heteroarylation. J Org Chem 2007; 72:7650-5. [PMID: 17784775 DOI: 10.1021/jo0712603] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new and efficient method for the synthesis of 2,3,6-trisubstituted imidazo[1,2-a]pyridine derivatives using a microwave-assisted one-pot, two-step Suzuki/heteroarylation or one-pot, three-step cyclization/Suzuki/heteroarylation was developed. Polysubstituted compounds are obtained in good yield from 2-amino-5-halogenopyridines, 2-halogenocarbonyl derivatives, boronic acids, and heteroaryl bromides.
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Affiliation(s)
- Jamal Koubachi
- Institut de Chimie Organique et Analytique, UMR CNRS 6005, Université d'Orléans, BP 6759, 45067 Orléans Cedex 2, France
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