1
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Roy S, Budhathoki S, Iqbal AD, Erickson AN, Ali MA, Alam MA. Domino Reaction Protocol to Synthesize Benzothiophene-Derived Chemical Entities as Potential Therapeutic Agents. J Org Chem 2024; 89:3781-3799. [PMID: 38408196 PMCID: PMC10947603 DOI: 10.1021/acs.joc.3c02646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
An efficient synthesis of 3-amino-2-formyl-functionalized benzothiophenes by a domino reaction protocol and their use to synthesize a library of novel scaffolds have been reported. Reactions of ketones and 1,3-diones with these amino aldehyde derivatives formed a series of benzothieno[3,2-b]pyridine and 3,4-dihydro-2H-benzothiopheno[3,2-b]quinolin-1-one, respectively. A plausible mechanism for the formation of fused pyridine derivatives by the Friedlander reaction has been elucidated by density functional theory (DFT) calculations. Furthermore, hydrazones were obtained by reacting the aldehyde functional group of benzothiophenes with different hydrazine derivatives. Preliminary screening of these compounds against several bacterial strains and cancer cell lines led to the discovery of several hit molecules. Hydrazone and benzothieno[3,2-b]pyridine derivatives are potent cytotoxic and antibacterial agents, respectively. One of the potent compounds effected ∼97% growth inhibition of the LOX IMVI cell line at 10 μM concentration.
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Affiliation(s)
- Subrata Roy
- Department of Chemistry and Physics, College of Sciences and Mathematics, Arkansas State University, Jonesboro, Arkansas 70401, United States
- Environmental Sciences Program, Arkansas State University, Jonesboro, Arkansas 72401, United States
| | - Shailesh Budhathoki
- Molecular Biosciences Program, Arkansas State University, Jonesboro, Arkansas 72401, United States
| | - Ahmed D Iqbal
- Department of Chemistry and Physics, College of Sciences and Mathematics, Arkansas State University, Jonesboro, Arkansas 70401, United States
| | - Alexander N Erickson
- Department of Chemistry, The University of Memphis, Memphis, Tennessee 38152, United States
| | - Mohamad Akbar Ali
- Department of Chemistry and Center for Catalysis and Separations, Khalifa University of Science and Technology, P.O. Box 127788 Abu Dhabi, United Arab Emirates
| | - Mohammad Abrar Alam
- Department of Chemistry and Physics, College of Sciences and Mathematics, Arkansas State University, Jonesboro, Arkansas 70401, United States
- Environmental Sciences Program, Arkansas State University, Jonesboro, Arkansas 72401, United States
- Molecular Biosciences Program, Arkansas State University, Jonesboro, Arkansas 72401, United States
- Arkansas Biosciences Institute, Arkansas State University, Jonesboro, Arkansas 72401, United States
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2
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Han W, Yang Y, Yu F, Li Q, Liu A, Xu W, Li J, Xue X. Design, synthesis and anticancer activity evaluation of 4-(3-1H-indazolyl)amino quinazoline derivatives as PAK4 inhibitors. Bioorg Med Chem 2023; 95:117501. [PMID: 37864885 DOI: 10.1016/j.bmc.2023.117501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/08/2023] [Accepted: 10/11/2023] [Indexed: 10/23/2023]
Abstract
A novel series of 4-(3-1H-indazolyl)amino quinazoline derivatives were developed as PAK4 inhibitors based on a scaffold hopping strategy. Compounds 27e, 27g, 27i and 27j were found to exhibit potent inhibitory activity against PAK4 (IC50 = 10, 13, 11 and 9 nM, respectively). Subsequent cellular assay demonstrated that compound 27e possessed the strongest antiproliferative activity against A549 cells with an IC50 value of 0.61 μM, a little bit better than PF-3758309. Further anticancer mechanistic investigation revealed that compound 27e significantly induced apoptosis of A549 cells in a concentration-dependent manner and blocked the cell cycle at phase G0/G1. A docking model between compound 27e and PAK4 was proposed to elucidate its possible binding modes. As a promising PAK4 inhibitor, compound 27e may serve as a candidate for the development of novel PAK4-targeted anticancer drug.
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Affiliation(s)
- Wei Han
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Yusang Yang
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Fan Yu
- The Engineering Research Center of Synthetic Polypeptide Drug Discovery and Evaluation, China Pharmaceutical University, Nanjing 211198, China
| | - Qianqian Li
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Anyao Liu
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Wenbo Xu
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China
| | - Jiabin Li
- School of Science, China Pharmaceutical University, Nanjing 211198, China
| | - Xiaowen Xue
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 211198, China.
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3
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Park GY, Park C, Lee SK, Im CY, Kim S, Hwang HJ, Lee J, Lee T, Hong YR, Song M. Scaffold hopping strategy to derive
4‐hydroxy‐1‐alkyl‐2‐oxo
‐1,
2‐dihydrothieno
[2,3‐b:4,5‐b′]
dipyridine‐3‐carbonylglycine
derivatives as a novel
hypoxia‐inducible
factor prolyl hydroxylase domain inhibitor for the potential treatment of chronic kidney disease anemia. B KOREAN CHEM SOC 2023. [DOI: 10.1002/bkcs.12652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Ga Young Park
- Department of Medicinal Chemistry, New Drug Discovery Center (NDDC) Daegu Gyeongbuk Medical Innovation Foundation (KMEDIhub) Daegu Korea
- Research Institute of Pharmaceutical Sciences, College of Pharmacy Kyungpook National University Daegu Korea
| | | | - Sang Kwang Lee
- Department of Medicinal Chemistry, New Drug Discovery Center (NDDC) Daegu Gyeongbuk Medical Innovation Foundation (KMEDIhub) Daegu Korea
| | - Chun Young Im
- Department of Medicinal Chemistry, New Drug Discovery Center (NDDC) Daegu Gyeongbuk Medical Innovation Foundation (KMEDIhub) Daegu Korea
| | - Soong‐Hyun Kim
- Department of Medicinal Chemistry, New Drug Discovery Center (NDDC) Daegu Gyeongbuk Medical Innovation Foundation (KMEDIhub) Daegu Korea
| | - Hee Jong Hwang
- Department of Medicinal Chemistry, New Drug Discovery Center (NDDC) Daegu Gyeongbuk Medical Innovation Foundation (KMEDIhub) Daegu Korea
| | - Jieon Lee
- Department of Medicinal Chemistry, New Drug Discovery Center (NDDC) Daegu Gyeongbuk Medical Innovation Foundation (KMEDIhub) Daegu Korea
| | - Taeho Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy Kyungpook National University Daegu Korea
| | | | - Minsoo Song
- Department of Medicinal Chemistry, New Drug Discovery Center (NDDC) Daegu Gyeongbuk Medical Innovation Foundation (KMEDIhub) Daegu Korea
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4
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Sokolov AI, Mikhaylov AA, Baleeva NS, Baranov MS. Xanthates as Thiol Surrogates for Nucleophilic Substitution with Aryl Halides. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100647] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Anatolii I. Sokolov
- Institute of Bioorganic Chemistry Russian Academy of Sciences Miklukho-Maklaya 16/10 117997 Moscow Russia
- Pirogov Russian National Research Medical University Ostrovitianov 1 117997 Moscow Russia
| | - Andrey A. Mikhaylov
- Institute of Bioorganic Chemistry Russian Academy of Sciences Miklukho-Maklaya 16/10 117997 Moscow Russia
| | - Nadezhda S. Baleeva
- Institute of Bioorganic Chemistry Russian Academy of Sciences Miklukho-Maklaya 16/10 117997 Moscow Russia
- Pirogov Russian National Research Medical University Ostrovitianov 1 117997 Moscow Russia
| | - Mikhail S. Baranov
- Institute of Bioorganic Chemistry Russian Academy of Sciences Miklukho-Maklaya 16/10 117997 Moscow Russia
- Pirogov Russian National Research Medical University Ostrovitianov 1 117997 Moscow Russia
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5
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Meng Y, Zhu W, Song Y, Bu G, Zhang L, Xu F. Rhodium(III)‐Catalyzed Oxidative Annulation of Amidines with Alkynes
via
Sequential C−H Bond Activation. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001634] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yan‐Yu Meng
- Department of College of Science Henan Agricultural University Zhengzhou 450002 P. R. China
| | - Wen‐Jing Zhu
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Yuan‐Yuan Song
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Gang‐Gang Bu
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Li‐Juan Zhang
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Fen Xu
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
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6
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One-pot approach to construct benzo[4,5]thieno[3,2-b]indoles, pyrido[3′,2’:4,5]thieno[3,2-b]indoles and pyrazino[2′,3’:4,5]thieno[3,2-b]indoles based on the Fischer indole synthesis. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131723] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Recent advances in the chemistry of thieno[2,3-b]pyridines 1. Methods of synthesis of thieno[2,3-b]pyridines. Russ Chem Bull 2020. [DOI: 10.1007/s11172-020-2969-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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8
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Azimian F, Hamzeh-Mivehroud M, Shahbazi Mojarrad J, Hemmati S, Dastmalchi S. Synthesis and biological evaluation of diaryl urea derivatives designed as potential anticarcinoma agents using de novo structure-based lead optimization approach. Eur J Med Chem 2020; 201:112461. [PMID: 32663641 DOI: 10.1016/j.ejmech.2020.112461] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/29/2020] [Accepted: 05/11/2020] [Indexed: 12/19/2022]
Abstract
To develop inhibitors blocking VEGFR2 and the Raf/MEK/ERK mitogen-activated protein kinase signaling pathway new compounds based on sorafenib were designed, synthesized and biologically evaluated. Using de novo design method, a library of new ligands was generated and expanded. Considering in silico binding affinity towards VEGFR2, synthetic feasibility, and drug-likeness property, some of the designed ligands were selected for synthesis and screening for their in vitro antiproliferative activities against two cancer cell lines (HT-29 and A549). Four compounds (13a, 14a, 14l and 15b) exhibited stronger antiproliferative activity (with IC50 values of 13.27, 6.62, 12.74, 3.38 μM, respectively) against HT-29 cells compared to that of the positive reference drug sorafenib (IC50 = 17.28 μM). Notably, compound 15b demonstrated the highest activity, and in particular, it induced HT-29 apoptosis, increased intracellular reactive oxygen species level, arrested cell cycle at G0/G1 phase, and influenced the expression of apoptosis- and cell cycle-related proteins. 15b compound can effectively block the Raf/MEK/ERK pathway and inhibit VEGFR2 phosphorylation. Molecular docking revealed that 15b can bind well to the active site of VEGFR2 receptor. Collectively, 15b may be considered as a promising compound amenable for further investigation for the development of new anticancer agents.
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Affiliation(s)
- Fereshteh Azimian
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Medicinal Chemistry, School of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Maryam Hamzeh-Mivehroud
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Medicinal Chemistry, School of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Javid Shahbazi Mojarrad
- Department of Medicinal Chemistry, School of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Salar Hemmati
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Siavoush Dastmalchi
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Medicinal Chemistry, School of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
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9
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Design, synthesis, and biological evaluation of novel benzo[b]thiophene-diaryl urea derivatives as potential anticancer agents. Med Chem Res 2020. [DOI: 10.1007/s00044-020-02559-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Perin N, Rep V, Sović I, Juričić Š, Selgrad D, Klobučar M, Pržulj N, Gupta CL, Malod-Dognin N, Pavelić SK, Hranjec M. Antiproliferative activity and mode of action analysis of novel amino and amido substituted phenantrene and naphtho[2,1-b]thiophene derivatives. Eur J Med Chem 2020; 185:111833. [DOI: 10.1016/j.ejmech.2019.111833] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/28/2019] [Accepted: 10/28/2019] [Indexed: 10/25/2022]
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11
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Antibacterial and antiproliferative activity of novel 2-benzimidazolyl- and 2-benzothiazolyl-substituted benzo[b]thieno-2-carboxamides. Mol Divers 2018; 22:637-646. [PMID: 29557543 DOI: 10.1007/s11030-018-9822-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 03/07/2018] [Indexed: 10/17/2022]
Abstract
Novel nitro (3a-3f)- and amino (4a-4f and 5a-5f)-substituted 2-benzimidazolyl and 2-benzothiazolyl benzo[b]thieno-2-carboxamides were designed and synthesized as potential antibacterial agents. The antibacterial activity of these compounds has been evaluated against Gram-positive (Staphylococcus aureus and Enterococcus faecalis) and Gram-negative bacteria (Escherichia coli and Moraxella catarrhalis). The most promising antibacterial activity was observed for the nitro- and amino-substituted benzimidazole derivatives 3a, 4a, 5a and 5b with MICs 2-8 [Formula: see text]. Additionally, compounds with inferior antibacterial activity were further tested for their antiproliferative activity in vitro against three human cancer cell lines. Amino-substituted benzothiazole hydrochloride salt 5d displayed the most pronounced and selective activity against the MCF-7 cell line with an [Formula: see text] of 40 nM. Furthermore, DNA binding experiments of selected derivatives indicated that DNA cannot be considered as a primary biological target for this type of compounds.
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12
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Antimalarial agents against both sexual and asexual parasites stages: structure-activity relationships and biological studies of the Malaria Box compound 1-[5-(4-bromo-2-chlorophenyl)furan-2-yl]-N-[(piperidin-4-yl)methyl]methanamine (MMV019918) and analogues. Eur J Med Chem 2018; 150:698-718. [PMID: 29571157 DOI: 10.1016/j.ejmech.2018.03.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 03/06/2018] [Accepted: 03/08/2018] [Indexed: 01/31/2023]
Abstract
Therapies addressing multiple stages of Plasmodium falciparum life cycle are highly desirable for implementing malaria elimination strategies. MMV019918 (1, 1-[5-(4-bromo-2-chlorophenyl)furan-2-yl]-N-[(piperidin-4-yl)methyl]methanamine) was selected from the MMV Malaria Box for its dual activity against both asexual stages and gametocytes. In-depth structure-activity relationship studies and cytotoxicity evaluation led to the selection of 25 for further biological investigation. The potential transmission blocking activity of 25 versus P. falciparum was confirmed through the standard membrane-feeding assay. Both 1 and 25 significantly prolonged atrioventricular conduction time in Langendorff-isolated rat hearts, and showed inhibitory activity of Ba2+ current through Cav1.2 channels. An in silico target-fishing study suggested the enzyme phosphoethanolamine methyltransferase (PfPMT) as a potential target. However, compound activity against PfPMT did not track with the antiplasmodial activity, suggesting the latter activity relies on a different molecular target. Nevertheless, 25 showed interesting activity against PfPMT, which could be an important starting point for the identification of more potent inhibitors active against both sexual and asexual stages of the parasite.
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13
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Cindrić M, Jambon S, Harej A, Depauw S, David-Cordonnier MH, Kraljević Pavelić S, Karminski-Zamola G, Hranjec M. Novel amidino substituted benzimidazole and benzothiazole benzo[ b ]thieno-2-carboxamides exert strong antiproliferative and DNA binding properties. Eur J Med Chem 2017; 136:468-479. [DOI: 10.1016/j.ejmech.2017.05.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 05/02/2017] [Accepted: 05/03/2017] [Indexed: 01/05/2023]
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14
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Shankar M, Ghosh K, Mukherjee K, Rit RK, Sahoo AK. Ru-Catalyzed One-Pot Diannulation of Heteroaryls: Direct Access to π-Conjugated Polycyclic Amides. Org Lett 2016; 18:6416-6419. [PMID: 27978646 DOI: 10.1021/acs.orglett.6b03314] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A novel Ru-catalyzed oxidative double annulation of heteroarenes with symmetrical and unsymmetrical alkynes is reported. A general method for the unsymmetrical annulation of heteroarenes with two distinct alkynes is showcased for the first time. Methylphenyl sulfoximine (MPS) plays an important role in the annulations of heteroarenes and allows the construction of structurally complex π-conjugated heteroarene-fused polycyclic amide skeletons via the formation of multiple C-C and C-N bonds in a single operation. The reaction exhibits excellent substrate scope and tolerates a wide range of functional groups.
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Affiliation(s)
- Majji Shankar
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
| | - Koushik Ghosh
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
| | - Kallol Mukherjee
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
| | - Raja K Rit
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
| | - Akhila K Sahoo
- School of Chemistry, University of Hyderabad , Hyderabad-500046, India
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15
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Kukade SD, Singh SK, Tekade PV, Naik RR, Bawankar SV. Microwave assisted synthesis, characterization and thermoacoustical study of a β-naphthol-guanidine-formaldehyde copolymer resin. NEW J CHEM 2016. [DOI: 10.1039/c5nj02184g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The thermo acoustic parameter evaluation of a β-naphthol-guanidine-formaldehyde copolymer resin for studying hydrogen bonding interactions between the polymer and ethanol as solvent.
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Affiliation(s)
- Suraj D. Kukade
- Department of Chemistry
- Jankidevi Bajaj College of Science
- Wardha-442001
- India
| | - Sunit Kumar Singh
- Department of Chemistry
- Visvesvaraya National Institute of Technology
- Nagpur-440010
- India
| | - P. V. Tekade
- Department of Chemistry
- Jankidevi Bajaj College of Science
- Wardha-442001
- India
| | - Ritesh R. Naik
- Department of Chemistry
- Jankidevi Bajaj College of Science
- Wardha-442001
- India
| | - S. V. Bawankar
- Department of Chemistry
- Jankidevi Bajaj College of Science
- Wardha-442001
- India
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16
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Bagley MC, Baashen M, Chuckowree I, Dwyer JE, Kipling D, Davis T. Microwave-Assisted Synthesis of a MK2 Inhibitor by Suzuki-Miyaura Coupling for Study in Werner Syndrome Cells. Pharmaceuticals (Basel) 2015; 8:257-76. [PMID: 26046488 PMCID: PMC4491660 DOI: 10.3390/ph8020257] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 05/13/2015] [Accepted: 06/01/2015] [Indexed: 01/12/2023] Open
Abstract
Microwave-assisted Suzuki-Miyaura cross-coupling reactions have been employed towards the synthesis of three different MAPKAPK2 (MK2) inhibitors to study accelerated aging in Werner syndrome (WS) cells, including the cross-coupling of a 2-chloroquinoline with a 3-pyridinylboronic acid, the coupling of an aryl bromide with an indolylboronic acid and the reaction of a 3-amino-4-bromopyrazole with 4-carbamoylphenylboronic acid. In all of these processes, the Suzuki-Miyaura reaction was fast and relatively efficient using a palladium catalyst under microwave irradiation. The process was incorporated into a rapid 3-step microwave-assisted method for the synthesis of a MK2 inhibitor involving 3-aminopyrazole formation, pyrazole C-4 bromination using N-bromosuccinimide (NBS), and Suzuki-Miyaura cross-coupling of the pyrazolyl bromide with 4-carbamoylphenylboronic acid to give the target 4-arylpyrazole in 35% overall yield, suitable for study in WS cells.
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Affiliation(s)
- Mark C Bagley
- Department of Chemistry, School of Life Sciences, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, UK.
| | - Mohammed Baashen
- Department of Chemistry, School of Life Sciences, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, UK.
| | - Irina Chuckowree
- Department of Chemistry, School of Life Sciences, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, UK.
| | - Jessica E Dwyer
- Department of Chemistry, School of Life Sciences, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QJ, UK.
| | - David Kipling
- Institute of Cancer and Genetics, Cardiff University School of Medicine, Heath Park, Cardiff, CF14 4XN, UK.
| | - Terence Davis
- Institute of Cancer and Genetics, Cardiff University School of Medicine, Heath Park, Cardiff, CF14 4XN, UK.
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17
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Feng JB, Wu XF. Synthesis of quinazolinimines and quinazolinamines from 2-fluorobenzonitriles under catalyst-free conditions. Org Biomol Chem 2015; 13:10656-62. [DOI: 10.1039/c5ob01587a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient procedure for the synthesis of quinazolinimines and quinazolinamines from 2-fluorobenzonitriles and 2-aminopyridines or amidines with KOtBu as the promotor has been developed.
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Affiliation(s)
- Jian-Bo Feng
- Department of Chemistry
- Zhejiang Sci-Tech University
- Xiasha Campus
- Hangzhou
- People's Republic of China
| | - Xiao-Feng Wu
- Department of Chemistry
- Zhejiang Sci-Tech University
- Xiasha Campus
- Hangzhou
- People's Republic of China
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