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Urbonavičius A, Krikštolaitytė S, Bieliauskas A, Martynaitis V, Solovjova J, Žukauskaitė A, Arbačiauskienė E, Šačkus A. Synthesis and Characterization of New Pyrano[2,3- c]pyrazole Derivatives as 3-Hydroxyflavone Analogues. Molecules 2023; 28:6599. [PMID: 37764375 PMCID: PMC10537540 DOI: 10.3390/molecules28186599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 09/01/2023] [Accepted: 09/09/2023] [Indexed: 09/29/2023] Open
Abstract
In this paper, an efficient synthetic route from pyrazole-chalcones to novel 6-aryl-5-hydroxy-2-phenylpyrano[2,3-c]pyrazol-4(2H)-ones as 3-hydroxyflavone analogues is described. The methylation of 5-hydroxy-2,6-phenylpyrano[2,3-c]pyrazol-4(2H)-one with methyl iodide in the presence of a base yielded a compound containing a 5-methoxy group, while the analogous reaction of 5-hydroxy-2-phenyl-6-(pyridin-4-yl)pyrano[2,3-c]pyrazol-4(2H)-one led to the zwitterionic 6-(N-methylpyridinium)pyrano[2,3-c]pyrazol derivative. The treatment of 5-hydroxy-2,6-phenylpyrano[2,3-c]pyrazol-4(2H)-one with triflic anhydride afforded a 5-trifloylsubstituted compound, which was further used in carbon-carbon bond forming Pd-catalyzed coupling reactions to yield 5-(hetero)aryl- and 5-carbo-functionalized pyrano[2,3-c]pyrazoles. The excited-state intramolecular proton transfer (ESIPT) reaction of 5-hydroxypyrano[2,3-c]pyrazoles from the 5-hydroxy moiety to the carbonyl group in polar protic, polar aprotic, and nonpolar solvents was observed, resulting in well-resolved two-band fluorescence. The structures of the novel heterocyclic compounds were confirmed by 1H-, 13C-, 15N-, and 19F-NMR spectroscopy, HRMS, and single-crystal X-ray diffraction data.
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Affiliation(s)
- Arminas Urbonavičius
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, LT-50254 Kaunas, Lithuania; (A.U.); (S.K.); (V.M.); (J.S.); (A.Ž.)
- Institute of Synthetic Chemistry, Kaunas University of Technology, K. Baršausko g. 59, LT-51423 Kaunas, Lithuania;
| | - Sonata Krikštolaitytė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, LT-50254 Kaunas, Lithuania; (A.U.); (S.K.); (V.M.); (J.S.); (A.Ž.)
| | - Aurimas Bieliauskas
- Institute of Synthetic Chemistry, Kaunas University of Technology, K. Baršausko g. 59, LT-51423 Kaunas, Lithuania;
| | - Vytas Martynaitis
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, LT-50254 Kaunas, Lithuania; (A.U.); (S.K.); (V.M.); (J.S.); (A.Ž.)
| | - Joana Solovjova
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, LT-50254 Kaunas, Lithuania; (A.U.); (S.K.); (V.M.); (J.S.); (A.Ž.)
| | - Asta Žukauskaitė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, LT-50254 Kaunas, Lithuania; (A.U.); (S.K.); (V.M.); (J.S.); (A.Ž.)
- Department of Chemical Biology, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
| | - Eglė Arbačiauskienė
- Department of Organic Chemistry, Kaunas University of Technology, Radvilėnų pl. 19, LT-50254 Kaunas, Lithuania; (A.U.); (S.K.); (V.M.); (J.S.); (A.Ž.)
| | - Algirdas Šačkus
- Institute of Synthetic Chemistry, Kaunas University of Technology, K. Baršausko g. 59, LT-51423 Kaunas, Lithuania;
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2
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Rana M, Hungyo H, Parashar P, Ahmad S, Mehandi R, Tandon V, Raza K, Assiri MA, Ali TE, El-Bahy ZM, Rahisuddin. Design, synthesis, X-ray crystal structures, anticancer, DNA binding, and molecular modelling studies of pyrazole-pyrazoline hybrid derivatives. RSC Adv 2023; 13:26766-26779. [PMID: 37681049 PMCID: PMC10481259 DOI: 10.1039/d3ra04873j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 08/22/2023] [Indexed: 09/09/2023] Open
Abstract
We have designed and synthesized three pyrazole analogs (4, 5a, 5b), pyrazole-based chalcones (6a-6d) and (8a-8h), and N-formyl/acetyl 1,3,5-trisubstituted pyrazoline analogs (7a-7d), (9a-9d). FT-IR, 1H, 13C NMR, and mass spectrometry techniques were used to describe the structures of all the synthesized analogs. The single crystal X-ray method was used to identify the molecular structure of derivatives 4 and 5a. All synthesized analogs were screened by MTT assay on two cancer cell lines, the human lung cancer cell line (A549) and cervical cancer cell line (HeLa). Among all compounds, analog 9d demonstrates significant anticancer activity against HeLa (IC50 = 23.6 μM) and A549 (IC50 = 37.59 μM). The non-interactive interaction of active compound (9d) with Calf thymus DNA (Ct-DNA) has been investigated through various methods, such as UV-vis absorption, emission, cyclic voltammetry and circular dichroism. The DPPH (2,2-diphenyl-1-picrylhydrazyl) free radical has been used to measure the antioxidant capacity of the pyrazoline derivative (9d). The outcomes showed that active analog has significant antioxidant activity. In addition, MD simulation of the EGFR tyrosine kinase protein-ligand complex was performed at a time scale of 100 ns. The MMGBSA data of ligand-protein complex are showed stable interactions up to 100 ns.
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Affiliation(s)
- Manish Rana
- Molecular and Biophysical Research Lab (MBRL), Department of Chemistry, Jamia Millia Islamia New Delhi 110025 India +91 9871460479
- Department of Chemistry, Ramjas College, University of Delhi Delhi 110007 India
| | - Hungharla Hungyo
- Special Centre for Molecular Medicine, Jawaharlal Nehru University New Delhi 110067 India
| | - Palak Parashar
- Special Centre for Molecular Medicine, Jawaharlal Nehru University New Delhi 110067 India
| | - Shaban Ahmad
- Department of Computer Science, Jamia Millia Islamia New Delhi 110025 India
| | - Rabiya Mehandi
- Molecular and Biophysical Research Lab (MBRL), Department of Chemistry, Jamia Millia Islamia New Delhi 110025 India +91 9871460479
| | - Vibha Tandon
- Special Centre for Molecular Medicine, Jawaharlal Nehru University New Delhi 110067 India
| | - Khalid Raza
- Department of Computer Science, Jamia Millia Islamia New Delhi 110025 India
| | - Mohammed A Assiri
- Department of Chemistry, Faculty of Science, King Khalid University Abha 61421 Saudi Arabia
| | - Tarik E Ali
- Department of Chemistry, Faculty of Science, King Khalid University Abha 61421 Saudi Arabia
| | - Zeinhom M El-Bahy
- Department of Chemistry, Faculty of Science, Al-Azhar University Nasr City 11884 Cairo Egypt
| | - Rahisuddin
- Molecular and Biophysical Research Lab (MBRL), Department of Chemistry, Jamia Millia Islamia New Delhi 110025 India +91 9871460479
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3
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Halim PA, Hassan RA, Mohamed KO, Hassanin SO, Khalil MG, Abdou AM, Osman EO. Synthesis and biological evaluation of halogenated phenoxychalcones and their corresponding pyrazolines as cytotoxic agents in human breast cancer. J Enzyme Inhib Med Chem 2021; 37:189-201. [PMID: 34894967 PMCID: PMC8667918 DOI: 10.1080/14756366.2021.1998023] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Novel halogenated phenoxychalcones 2a–f and their corresponding N-acetylpyrazolines 3a–f were synthesised and evaluated for their anticancer activities against breast cancer cell line (MCF-7) and normal breast cell line (MCF-10a), compared with staurosporine. All compounds showed moderate to good cytotoxic activity when compared to control. Compound 2c was the most active, with IC50 = 1.52 µM and selectivity index = 15.24. Also, chalcone 2f showed significant cytotoxic activity with IC50 = 1.87 µM and selectivity index = 11.03. Compound 2c decreased both total mitogen activated protein kinase (p38α MAPK) and phosphorylated enzyme in MCF-7 cells, suggesting its ability to decrease cell proliferation and survival. It also showed the ability to induce ROS in MCF-7 treated cells. Compound 2c exhibited apoptotic behaviour in MCF-7 cells due to cell accumulation in G2/M phase and elevation in late apoptosis 57.78-fold more than control. Docking studies showed that compounds 2c and 2f interact with p38alpha MAPK active sites.
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Affiliation(s)
- Peter A Halim
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Rasha A Hassan
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Khaled O Mohamed
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Soha O Hassanin
- Biochemistry Department, Faculty of Pharmacy, Modern University for Technology and Information, Cairo, Egypt
| | - Mona G Khalil
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Modern University for Technology and Information, Cairo, Egypt
| | - Amr M Abdou
- Department of Microbiology and Immunology, National Research Centre, Dokki, Egypt
| | - Eman O Osman
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
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4
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Development of dual inhibitors targeting pyruvate dehydrogenase kinases and human lactate dehydrogenase A: High-throughput virtual screening, synthesis and biological validation. Eur J Med Chem 2020; 203:112579. [DOI: 10.1016/j.ejmech.2020.112579] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 05/18/2020] [Accepted: 06/12/2020] [Indexed: 12/20/2022]
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5
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Dediazoniative functionalization of chromen-4-one and chromen-2-one diazonium-BF4 salts in BMIM-ILs. direct access to the F, I, OSO(CF3) NTf, and N(Tf)2 derivatives, and facile synthesis of chromenone azo-dyes by coupling to activated arenes. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Lin Y, Wan JP, Liu Y. Synthesis of 3-halochromones with simple KX halogen sources enabled by in situ halide oxidation. NEW J CHEM 2020. [DOI: 10.1039/d0nj00825g] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An in situ oxidation strategy for generating molecular halogen has been developed for the synthesis of 3-halochromones by employing simple potassium halides as halogen sources.
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Affiliation(s)
- Yan Lin
- College of Chemistry and Chemical Engineering, Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University
- Nanchang 330022
- P. R. China
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7
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Yu Q, Liu Y, Wan JP. Transition metal-free synthesis of 3-trifluoromethyl chromones via tandem C–H trifluoromethylation and chromone annulation of enaminones. Org Chem Front 2020. [DOI: 10.1039/d0qo00855a] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The synthesis of 3-trifluoromethyl chromones has been realized via transition metal-free reactions of o-hydroxyphenyl enaminones and the Langlois reagent via cascade C–H trifluoromethylation and chromone annulation.
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Affiliation(s)
- Qing Yu
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
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8
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Ramos ITL, Silva TMS, Camara CA. Synthesis of new 6- and 8-Alkenyl-3,7,3’,4’-Tetramethoxyquercetin derivatives by microwave-assisted Heck coupling. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1636398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Ingrid T. L. Ramos
- Departamento de Química, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - Tania M. S. Silva
- Departamento de Química, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - Celso A. Camara
- Departamento de Química, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
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9
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Abdelhafez OM, Ahmed EY, Abdel Latif NA, Arafa RK, Abd Elmageed ZY, Ali HI. Design and molecular modeling of novel P38α MAPK inhibitors targeting breast cancer, synthesized from oxygen heterocyclic natural compounds. Bioorg Med Chem 2019; 27:1308-1319. [DOI: 10.1016/j.bmc.2019.02.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 01/30/2019] [Accepted: 02/14/2019] [Indexed: 01/06/2023]
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10
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Guo Y, Xiang Y, Wei L, Wan JP. Thermoinduced Free-Radical C–H Acyloxylation of Tertiary Enaminones: Catalyst-Free Synthesis of Acyloxyl Chromones and Enaminones. Org Lett 2018; 20:3971-3974. [DOI: 10.1021/acs.orglett.8b01536] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Yanhui Guo
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Yunfeng Xiang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Li Wei
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
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11
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Kang D, Ahn K, Hong S. Site-Selective C−H Bond Functionalization of Chromones and Coumarins. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800128] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dahye Kang
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon Korea
| | - Kukcheol Ahn
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon Korea
| | - Sungwoo Hong
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon Korea
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon Korea
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12
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Novel 3',5'-diprenylated chalcones inhibited the proliferation of cancer cells in vitro by inducing cell apoptosis and arresting cell cycle phase. Eur J Med Chem 2017; 133:227-239. [PMID: 28390228 DOI: 10.1016/j.ejmech.2017.03.077] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Revised: 03/03/2017] [Accepted: 03/30/2017] [Indexed: 12/12/2022]
Abstract
A double Claisen rearrangements synthetic strategy was established for the total synthesis of 4,4'-dimethyl medicagenin (compound 6c). A series of its analogs also were prepared, including two novel 3',5'-diprenylated chalcones, in which ring B was replaced by azaheterocycle. The structures of the twenty-two newly synthesized compounds were confirmed by 1H NMR, 13C NMR and ESI-MS. In vitro, the cytotoxicity of the target compounds was evaluated using cancer cells. Noticeably, compound 10 exhibited broad-spectrum cytotoxicity on PC3 prostate cancer cells, MDA-MB-231 breast cancer cells (MDA), HEL and K562 erythroleukemia cells with IC50 values of 2.92, 3.14, 1.85 and 2.64 μM, respectively. Further studies indicated that compound 10 induced apoptosis and arrested the cell cycle phase of the above mentioned four cancer cell lines. By contrast, compound 6g selectively displayed potent inhibitory activity against the proliferation of HEL cells with an IC50 value of 4.35 μM. Compound 6g slightly induced apoptosis and arrested cell cycle phase of HEL cells. Preliminary structure-activity relationship studies indicated that, in all cancer cell lines evaluated, the 3-pyridinyl group was essential for cytotoxicity.
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13
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Amin KM, Syam YM, Anwar MM, Ali HI, Abdel-Ghani TM, Serry AM. Synthesis and molecular docking studies of new furochromone derivatives as p38α MAPK inhibitors targeting human breast cancer MCF-7 cells. Bioorg Med Chem 2017; 25:2423-2436. [PMID: 28291685 DOI: 10.1016/j.bmc.2017.02.065] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Accepted: 02/27/2017] [Indexed: 12/12/2022]
Abstract
Based on the reported high expression of p38α MAP kinase in invasive breast cancers and the activity of different functionalized chromone derivatives as p38α inhibitors, a new set of 4,9-dimethoxy/4-methoxy-7-methyl-5-oxo-5H-furo[3,2-g]chromone derivatives were efficiently synthesized aiming to introduce new p38α MAP kinase suppressors as new anti-breast cancer tools. Using GOLD program, molecular docking study of the target compounds into p38α MAP kinase binding pocket was performed to highlight their scores, mode of binding and the important interactions to the amino acid residues of the enzyme. MTT assay investigated that fifteen target compounds produced marked cytotoxic potency higher than that obtained by Doxorubicin against MCF-7 cancer cells of IC50 values ranging from 0.007 to 0.17μM vs IC50; 0.62μM of doxorubicin. Eleven selected compounds were evaluated for their inhibitory potency against p38α MAPK kinase. The derivatives IVa, Va,b, VIa, IXb and XIIIa represented significant activity (IC50; 0.19-0.67μM) comparing to the reference drug SB203580 (IC50; 0.50μM). In virtue of its promising cytotoxic and p38α MAP kinase inhibition potency, the furochromone derivative IXb was selected as a representative example to investigate its mechanistic effects on cell cycle progression and induction of apoptosis in MCF-7 cell lines. The results showed that the compound IXb induced cell cycle cessation at G2/M phase preventing its mitotic cycle, alongside its noteworthy activation of caspases-9 and -3 which might mediate the apoptosis of MCF-7 cells.
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Affiliation(s)
- Kamelia M Amin
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Egypt
| | - Yasmin M Syam
- Department of Therapeutical Chemistry, National Research Centre, Dokki, Cairo 12622, Egypt.
| | - Manal M Anwar
- Department of Therapeutical Chemistry, National Research Centre, Dokki, Cairo 12622, Egypt
| | - Hamed I Ali
- Pharmaceutical Sciences Dept., Irma Lerma Rangel College of Pharmacy, Texas A&M Health Science Center, TX, USA
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14
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Fridén-Saxin M, Seifert T, Malo M, da Silva Andersson K, Pemberton N, Dyrager C, Friberg A, Dahlén K, Wallén EA, Grøtli M, Luthman K. Chroman-4-one and chromone based somatostatin β-turn mimetics. Eur J Med Chem 2016; 114:59-64. [DOI: 10.1016/j.ejmech.2016.02.046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 02/17/2016] [Accepted: 02/18/2016] [Indexed: 11/28/2022]
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15
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Wang CQ, Chen X, Jiang JH, Tang H, Zhu KK, Zhou YJ, Zheng CH, Zhu J. Acidic rearrangement of benzyl group in flavone benzyl ethers and its regioselectivity. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2015.03.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Hou C, Chen H, Xu X, Zhu F, Guo L, Jiang M, Yang C, Deng L. Synthesis of Rigid Analogues of Flavone by Intramolecular Heck Reaction. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500180] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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17
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Mphahlele MJ, Oyeyiola FA. One-Pot Site-Selective Sonogashira Cross-Coupling–Heteroannulation of the 2-Aryl-6,8-Dibromoquinolin-4(1H)-Ones: Synthesis of Novel 6-H-Pyrrolo[3,2,1-ij]Quinolin-6-Ones. JOURNAL OF CHEMICAL RESEARCH 2014. [DOI: 10.3184/174751914x14097554893763] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The 2-aryl-6,8-dibromoquinolin-4(1 H)-ones were subjected to site-selective Sonogashira cross-coupling with terminal acetylenes as models for C sp2-C sp bond formation in the presence of Pd/C–PPh3 and CuI as catalysts and K2CO3 as a base in dioxane to afford the 2-substituted 4-aryl-8-bromo-4 H-pyrrolo[3,2,1- ij]quinolin-6-ones. These were, in turn, subjected to Suzuki–Miyaura cross-coupling with 4-fluorophenylboronic acid as coupling partner to afford the 2-substituted 4,8-diaryl-4 H-pyrrolo[3,2,1- ij]quinolin-6-ones.
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Affiliation(s)
- Malose J. Mphahlele
- Department of Chemistry, College of Science, Engineering and Technology, University of South Africa, PO Box 392, Pretoria 0003, South Africa
| | - Felix A. Oyeyiola
- Department of Chemistry, College of Science, Engineering and Technology, University of South Africa, PO Box 392, Pretoria 0003, South Africa
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19
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Redwan IN, Dyrager C, Solano C, Fernández de Trocóniz G, Voisin L, Bliman D, Meloche S, Grøtli M. Towards the development of chromone-based MEK1/2 modulators. Eur J Med Chem 2014; 85:127-38. [PMID: 25078316 DOI: 10.1016/j.ejmech.2014.07.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 06/30/2014] [Accepted: 07/06/2014] [Indexed: 11/27/2022]
Abstract
Inhibition or allosteric modulation of mitogen-activated protein kinase kinases MEK1 and MEK2 (MEK1/2) represent a promising strategy for the discovery of new specific anticancer agents. In this paper, structure-based design, beginning from the lead compound PD98059, was used to study potential structural modifications on the chromone structure in order to obtain highly potent derivatives that target the allosteric pocket in MEK1. Subsequently, a small series of PD98059 analogs were synthesized to provide a first generation of chromone-based derivatives that inhibit the activation of MEK1 with IC50 values as low as 30 nM in vitro. Complementary cellular studies also showed that two of the compounds in the series inhibit the activity of MEK1/2 with IC50 values in the nanomolar range (73-97 nM). In addition, compounds in this series were found to inhibit the proliferation of a small panel of human cancer cell lines.
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Affiliation(s)
- Itedale Namro Redwan
- Department of Chemistry and Molecular Biology, Medicinal Chemistry, University of Gothenburg, SE-41296 Göteborg, Sweden
| | - Christine Dyrager
- Department of Chemistry and Molecular Biology, Medicinal Chemistry, University of Gothenburg, SE-41296 Göteborg, Sweden
| | - Carlos Solano
- Department of Chemistry and Molecular Biology, Medicinal Chemistry, University of Gothenburg, SE-41296 Göteborg, Sweden
| | | | - Laure Voisin
- Institute of Research in Immunology and Cancer, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
| | - David Bliman
- Department of Chemistry and Molecular Biology, Medicinal Chemistry, University of Gothenburg, SE-41296 Göteborg, Sweden
| | - Sylvain Meloche
- Institute of Research in Immunology and Cancer, Université de Montréal, Montreal, Quebec H3C 3J7, Canada
| | - Morten Grøtli
- Department of Chemistry and Molecular Biology, Medicinal Chemistry, University of Gothenburg, SE-41296 Göteborg, Sweden.
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20
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O’Boyle NM, Niklasson IB, Tehrani-Bagha AR, Delaine T, Holmberg K, Luthman K, Karlberg AT. Epoxy Resin Monomers with Reduced Skin Sensitizing Potency. Chem Res Toxicol 2014; 27:1002-10. [DOI: 10.1021/tx5000624] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Niamh M. O’Boyle
- Department
of Chemistry and Molecular Biology, Dermatochemistry and Skin Allergy, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Ida B. Niklasson
- Department
of Chemistry and Molecular Biology, Dermatochemistry and Skin Allergy, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Ali R. Tehrani-Bagha
- Chemical
and Biological Engineering, Applied Surface Chemistry, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Tamara Delaine
- Department
of Chemistry and Molecular Biology, Dermatochemistry and Skin Allergy, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Krister Holmberg
- Chemical
and Biological Engineering, Applied Surface Chemistry, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Kristina Luthman
- Department
of Chemistry and Molecular Biology, Medicinal Chemistry, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Ann-Therese Karlberg
- Department
of Chemistry and Molecular Biology, Dermatochemistry and Skin Allergy, University of Gothenburg, SE-412 96 Gothenburg, Sweden
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21
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Wang X, Cheng G, Cui X. Tandem synthesis of 3-allyl-chromones from alkynones and allylic alcohols under metal-free conditions. Chem Commun (Camb) 2014; 50:652-4. [DOI: 10.1039/c3cc48259f] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Fan X, Shen N, Li B, Guo S, Zhang X. Synthesis of 3-(4-oxo-4H-chromen-3-yl)acrylates through the tandem reaction of 3-(2-buta-2,3-dienoylphenoxy)acrylates. RSC Adv 2014. [DOI: 10.1039/c4ra00277f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A straightforward and efficient synthesis of 2-substituted 3-(4-oxo-4H-chromen-3-yl)acrylates through base-catalyzed tandem reaction of the readily available 3-(2-buta-2,3-dienoylphenoxy)acrylates under extremely mild conditions has been developed.
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Affiliation(s)
- Xuesen Fan
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory for Environmental Pollution Control
- Henan Normal University
- Xinxiang, P. R. China
| | - Nana Shen
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory for Environmental Pollution Control
- Henan Normal University
- Xinxiang, P. R. China
| | - Bin Li
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory for Environmental Pollution Control
- Henan Normal University
- Xinxiang, P. R. China
| | - Shenghai Guo
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory for Environmental Pollution Control
- Henan Normal University
- Xinxiang, P. R. China
| | - Xinying Zhang
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Henan Key Laboratory for Environmental Pollution Control
- Henan Normal University
- Xinxiang, P. R. China
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23
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Mphahlele MJ, Adeloye AO. 4,6,8-Triarylquinoline-3-carbaldehyde derivatives: synthesis and photophysical properties. Molecules 2013; 18:15769-87. [PMID: 24352028 PMCID: PMC6269739 DOI: 10.3390/molecules181215769] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 12/11/2013] [Accepted: 12/12/2013] [Indexed: 11/26/2022] Open
Abstract
Palladium catalyzed Suzuki-Miyaura cross-coupling of 6,8-dibromo-4-chloroquinoline-3-carbaldehyde with arylboronic and arylvinylboronic acid derivatives in the presence of potassium carbonate in aqueous dioxane afforded the corresponding 4,6,8-triarylquinoline-3-carbaldehydes, exclusively. These products were transformed into 4,6,8-triaryl-3-(4-fluorophenyl)amino)-N-(quinolin-3-yl)methylenes and their 4,6,8-triaryl-quinoline-3-methanol derivatives. The absorption and emission spectra were measured for the 4,6,8-triarylquinoline-3-carbaldehydes and their derivatives in selected solvents of different polarity.
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Affiliation(s)
- Malose Jack Mphahlele
- Department of Chemistry, College of Science, Engineering and Technology, University of South Africa, P.O. Box 392, Pretoria 0003, South Africa.
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24
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Monserrat JP, Tiwari KN, Quentin L, Pigeon P, Jaouen G, Vessières A, Chabot GG, Hillard EA. Ferrocenyl flavonoid-induced morphological modifications of endothelial cells and cytotoxicity against B16 murine melanoma cells. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2012.12.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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25
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Selepe MA, Van Heerden FR. Application of the Suzuki-Miyaura reaction in the synthesis of flavonoids. Molecules 2013; 18:4739-65. [PMID: 23609624 PMCID: PMC6269869 DOI: 10.3390/molecules18044739] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 04/10/2013] [Accepted: 04/19/2013] [Indexed: 11/16/2022] Open
Abstract
The application of the Suzuki-Miyaura reaction in the synthesis of flavonoids, an important class of natural products, is reviewed. This reaction has not only been employed to provide access to flavonoid nuclei, but has also been applied to the synthesis of dimeric flavonoids and in the synthesis of libraries of flavonoid derivatives for biological activity studies. The classes of flavonoids that are discussed are the chalcones, flavones, isoflavones, neoflavones, biflavones and derivatives of flavonoids obtained by C-C bond formation via the Suzuki-Miyaura reaction.
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Affiliation(s)
| | - Fanie R. Van Heerden
- School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag X01, Scottsville 3209, South Africa; E-Mail:
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26
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Fridén-Saxin M, Seifert T, Hansen LK, Grøtli M, Erdelyi M, Luthman K. Proline-mediated formation of novel chroman-4-one tetrahydropyrimidines. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.06.077] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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27
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Fridén-Saxin M, Seifert T, Landergren MR, Suuronen T, Lahtela-Kakkonen M, Jarho EM, Luthman K. Synthesis and evaluation of substituted chroman-4-one and chromone derivatives as sirtuin 2-selective inhibitors. J Med Chem 2012; 55:7104-13. [PMID: 22746324 PMCID: PMC3426190 DOI: 10.1021/jm3005288] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
![]()
A series of substituted chromone/chroman-4-one derivatives
has
been synthesized and evaluated as novel inhibitors of SIRT2, an enzyme
involved in aging-related diseases, e.g., neurodegenerative disorders.
The analogues were efficiently synthesized in a one-step procedure
including a base-mediated aldol condensation using microwave irradiation.
The most potent compounds, with inhibitory concentrations in the low
micromolar range, were substituted in the 2-, 6-, and 8-positions.
Larger, electron-withdrawing substituents in the 6- and 8-positions
were favorable. The most potent inhibitor of SIRT2 was 6,8-dibromo-2-pentylchroman-4-one
with an IC50 of 1.5 μM. The synthesized compounds
show high selectivity toward SIRT2 over SIRT1 and SIRT3 and represent
an important starting point for the development of novel SIRT2 inhibitors.
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Affiliation(s)
- Maria Fridén-Saxin
- Department of Chemistry and Molecular Biology, Medicinal Chemistry, University of Gothenburg, SE-412 96 Göteborg, Sweden
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28
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29
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Eleya N, Malik I, Reimann S, Wittler K, Hein M, Patonay T, Villinger A, Ludwig R, Langer P. Efficient Synthesis of Arylated Flavones by Site-Selective Suzuki-Miyaura Cross-Coupling Reactions of the Bis(triflate) of 5,7- and 7,8-Dihydroxyflavone. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101491] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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30
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Caldwell ST, McPhail DB, Duthie GG, Hartley RC. Synthesis of polyhydroxylated flavonoids bearing a lipophilic decyl tail as potential therapeutic antioxidants. CAN J CHEM 2012. [DOI: 10.1139/v11-087] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Antioxidants have potential for the treatment of stroke and neurodegeneration, and chimeric compounds that combine a flavon-3-ol head group related to myricetin and a lipophilic decyl tail are known to protect membranes from oxidative damage at least as well as vitamin E. New flavon-3-ols that are highly hydroxylated in the B ring in ways not found in natural flavon-3-ols and bearing a lipophilic decyl tail have been prepared from trimethoxy- and tetramethoxybenzoic acids accessed by lithiation–carboxylation reactions. Direct enolate acylation was preferred over Baker–Venkataraman rearrangement when there were methoxy groups at both the 2- and the 6-position of the benzoic acid derivatives.
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Affiliation(s)
- Stuart T. Caldwell
- WestCHEM School of Chemistry, University of Glasgow, Glasgow, G12 8QQ Scotland, UK
| | - Donald B. McPhail
- Antoxis Limited, 5:16 Institute of Medical Sciences, Foresterhill, Aberdeen, AB25 2ZD Scotland, UK
| | - Garry G. Duthie
- Rowett Institute of Nutrition and Health, University of Aberdeen, Aberdeen AB21 9SB Scotland, UK
| | - Richard C. Hartley
- WestCHEM School of Chemistry, University of Glasgow, Glasgow, G12 8QQ Scotland, UK
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31
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Mijangos MV, González-Marrero J, Miranda LD, Vincent-Ruz P, Lujan-Montelongo A, Olivera-Díaz D, Bautista E, Ortega A, de la Luz Campos-González M, Gamez-Montaño R. Microwave-assisted C-3 selective oxidative radical alkylation of flavones. Org Biomol Chem 2012; 10:2946-9. [DOI: 10.1039/c2ob25249j] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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32
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33
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Dyrager C, Möllers LN, Kjäll LK, Alao JP, Dinér P, Wallner FK, Sunnerhagen P, Grøtli M. Design, synthesis, and biological evaluation of chromone-based p38 MAP kinase inhibitors. J Med Chem 2011; 54:7427-31. [PMID: 21905739 DOI: 10.1021/jm200818j] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
3-(4-Fluorophenyl)-2-(4-pyridyl)chromone derivatives were synthesized and evaluated as p38 MAP kinase inhibitors. Introduction of an amino group in the 2-position of the pyridyl moiety gave p38α inhibitors with IC(50) in the low nanomolar range (e.g., IC(50) = 17 nm). The inhibitors showed excellent selectivity profiles when tested on a panel of 62 kinases, as well as efficient inhibition of p38 signaling in human breast cancer cells.
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Affiliation(s)
- Christine Dyrager
- Department of Chemistry, Medicinal Chemistry, University of Gothenburg, SE-41296 Göteborg, Sweden
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34
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Kim D, Hong S. Palladium(II)-catalyzed direct intermolecular alkenylation of chromones. Org Lett 2011; 13:4466-9. [PMID: 21797199 DOI: 10.1021/ol2018278] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new efficient method for the direct alkenylation of chromones via a palladium(II)-catalyzed C-H functionalization reaction was developed. The use of pivalic acid with Cu(OAc)(3)/Ag(2)CO(3) provided superior reactivity in the cross-coupling of chromones with alkene partners. This approach represents a significant advance over the existing two-step method and afforded various 3-vinylchromone derivatives, which are privileged structures in many biologically active compounds and versatile synthetic building blocks.
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Affiliation(s)
- Donghee Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea
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35
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Dyrager C, Wickström M, Fridén-Saxin M, Friberg A, Dahlén K, Wallén EA, Gullbo J, Grøtli M, Luthman K. Inhibitors and promoters of tubulin polymerization: Synthesis and biological evaluation of chalcones and related dienones as potential anticancer agents. Bioorg Med Chem 2011; 19:2659-65. [DOI: 10.1016/j.bmc.2011.03.005] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Revised: 02/27/2011] [Accepted: 03/03/2011] [Indexed: 11/16/2022]
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36
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Nilsson J, Gidlöf R, Nielsen EØ, Liljefors T, Nielsen M, Sterner O. Triazoloquinazolinediones as novel high affinity ligands for the benzodiazepine site of GABAA receptors. Bioorg Med Chem 2011; 19:111-21. [DOI: 10.1016/j.bmc.2010.11.050] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Accepted: 11/20/2010] [Indexed: 11/29/2022]
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37
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Ankner T, Fridén-Saxin M, Pemberton N, Seifert T, Grøtli M, Luthman K, Hilmersson G. KHMDS enhanced SmI(2)-mediated reformatsky type alpha-cyanation. Org Lett 2010; 12:2210-3. [PMID: 20429501 DOI: 10.1021/ol100424y] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel combination of SmI(2), KHMDS, and TsCN can be utilized to introduce a cyano group into structurally diverse and highly sensitive 2-alkyl-chroman-4-ones. Subsequent oxidation allows the formed 2-alkyl-3-cyanochromones to be isolated in yields ranging from 49 to 77%. In addition, alpha-bromoketones and esters were found to undergo equally effective alpha-cyanation.
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Affiliation(s)
- Tobias Ankner
- Department of Chemistry, University of Gothenburg, Göteborg, Sweden
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38
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Masters KS, Flynn BL. An efficient synthesis of (±)-frondosin B using a Stille–Heck reaction sequence. Org Biomol Chem 2010; 8:1290-2. [DOI: 10.1039/b924542a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Dyrager C, Friberg A, Dahlén K, Fridén-Saxin M, Börjesson K, Wilhelmsson LM, Smedh M, Grøtli M, Luthman K. 2,6,8-Trisubstituted 3-Hydroxychromone Derivatives as Fluorophores for Live-Cell Imaging. Chemistry 2009; 15:9417-23. [PMID: 19670192 DOI: 10.1002/chem.200900279] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Christine Dyrager
- Department of Chemistry-Medicinal Chemistry, University of Gothenburg, 412 96 Göteborg, Sweden
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40
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Fridén-Saxin M, Pemberton N, Andersson KDS, Dyrager C, Friberg A, Grøtli M, Luthman K. Synthesis of 2-alkyl-substituted chromone derivatives using microwave irradiation. J Org Chem 2009; 74:2755-9. [PMID: 19323574 DOI: 10.1021/jo802783z] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A base-promoted condensation between 2-hydroxyacetophenones and aliphatic aldehydes has been studied. The reaction has been optimized to afford 2-alkyl-substituted 4-chromanones in an efficient manner using microwave heating. Performing the reaction using diisopropylamine in EtOH at 170 degrees C for 1 h gave moderate to high yields (43-88%). The 4-chromanones could be further converted into highly functionalized 2,3,6,8-tetrasubstituted chromones in which a 3-substituent (acetate, amine, or bromine) was introduced via straightforward chemical transformations.
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Affiliation(s)
- Maria Fridén-Saxin
- Department of Chemistry, Medicinal Chemistry, University of Gothenburg, SE-41296 Goteborg, Sweden
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41
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Hergué N, Mallet C, Touvron J, Allain M, Leriche P, Frère P. Facile synthesis of 3-substituted thieno[3,2-b]furan derivatives. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.02.058] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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42
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Appukkuttan P, Van der Eycken E. Recent Developments in Microwave‐Assisted, Transition‐Metal‐Catalysed C–C and C–N Bond‐Forming Reactions. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701056] [Citation(s) in RCA: 136] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Prasad Appukkuttan
- Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry, Uppsala University, BMC, Box 574, 75123 Uppsala, Sweden
| | - Erik Van der Eycken
- Department of Chemistry, University of Leuven, 3001 Leuven, Belgium, Fax: +32‐16‐327990
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43
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Ingle VN, Hatzade KM, Taile VS, Gaidhane PK, Kharche ST. Synthesis ofO‐β‐D‐Glucopyranosides of 7‐Hydroxy‐3‐(imidazol‐2‐yl)‐4H‐chromen‐4‐ones. J Carbohydr Chem 2007. [DOI: 10.1080/07328300701298196] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- V. N. Ingle
- a Department of Chemistry , Rashtrasant Tukadoji Maharaj Nagpur University , Nagpur, 440033, India
| | - K. M. Hatzade
- a Department of Chemistry , Rashtrasant Tukadoji Maharaj Nagpur University , Nagpur, 440033, India
| | - V. S. Taile
- a Department of Chemistry , Rashtrasant Tukadoji Maharaj Nagpur University , Nagpur, 440033, India
| | - P. K. Gaidhane
- a Department of Chemistry , Rashtrasant Tukadoji Maharaj Nagpur University , Nagpur, 440033, India
| | - S. T. Kharche
- a Department of Chemistry , Rashtrasant Tukadoji Maharaj Nagpur University , Nagpur, 440033, India
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