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Kaczmarek R, Radzikowska-Cieciura E, Królewska-Golińska K, Dolot R, Wheeler KA, Chavez FA, Dembinski R. Synthesis and Determination of Anticancer Activity of Dicobalt Hexacarbonyl 2'-Deoxy-5-alkynylfuropyrimidines. ACS Med Chem Lett 2023; 14:962-969. [PMID: 37465308 PMCID: PMC10351056 DOI: 10.1021/acsmedchemlett.3c00152] [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: 04/21/2023] [Accepted: 06/20/2023] [Indexed: 07/20/2023] Open
Abstract
Dicobalt hexacarbonyl 5-alkynyl furopyrimidine nucleoside analogs, with 4-methylphenyl (p-tolyl) and 4-pentylphenyl substituents attached at the C-6 base position, designed in the form of ribose acetyl esters, were synthesized (42-96%). Attached at the C-5 position were propargyl alcohol, its methyl ether and acetate derivatives, butynol, and the 4-methylphenyl- (p-tolyl) and 4-pentylphenyl-substituted alkynyl groups, which were coordinated to a dicobalt hexacarbonyl unit. The structure of 5-(3-acetoxyprop-1-yn-1-yl)-6-p-tolyl-2'-deoxyribofuranosyl-furo[2,3-d]pyrimidin-2-one was determined by X-ray crystallography. Density functional theory calculations performed on the corresponding derivative yielded geometric parameters for the dicobalt hexacarbonyl adduct of this ligand. The cytotoxic activity of each of dicobalt modified nucleosides on cancer cells of different phenotypes was determined in vitro. The investigated compounds showed antiproliferative effects with median inhibitory concentration (IC50) values in the ranges of 14-90 and 9-50 μM for HeLa and K562 cells, respectively. The formation of reactive oxygen species in the presence of modified nucleosides was determined in K562 cells. The results indicate that the mechanism of action for the studied compounds may be related to the induction of oxidative stress.
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Affiliation(s)
- Renata Kaczmarek
- Centre
of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Ewa Radzikowska-Cieciura
- Centre
of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Karolina Królewska-Golińska
- Centre
of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Rafał Dolot
- Centre
of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Kraig A. Wheeler
- Department
of Chemistry, Whitworth University, 300 W. Hawthorne Rd., Spokane, Washington 99251, United States
| | - Ferman A. Chavez
- Department
of Chemistry, Oakland University, 146 Library Dr., Rochester, Michigan 48309-4479, United States
| | - Roman Dembinski
- Centre
of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
- Department
of Chemistry, Oakland University, 146 Library Dr., Rochester, Michigan 48309-4479, United States
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Kaczmarek R, Twardy DJ, Olson TL, Korczyński D, Andrei G, Snoeck R, Dolot R, Wheeler KA, Dembinski R. Extension of furopyrimidine nucleosides with 5-alkynyl substituent: Synthesis, high fluorescence, and antiviral effect in the absence of free ribose hydroxyl groups. Eur J Med Chem 2021; 209:112884. [PMID: 33039724 PMCID: PMC7521880 DOI: 10.1016/j.ejmech.2020.112884] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 09/15/2020] [Accepted: 09/23/2020] [Indexed: 11/24/2022]
Abstract
A novel methodology to access alkynyl nucleoside analogues is elaborated. Highly fluorescent 5-alkynylfuropyrimidines were synthesized (97-46%) and their antiviral properties investigated in vitro. Regiochemistry of the functionalization was achieved with the aid of 5-endo-dig electrophilic halocyclization of acetyl 5-p-tolyl- or 5-p-pentylphenyl-2'-deoxyuridine. Structure of one of the resulting nucleosides, 6-p-tolyl-5-iodo-2'-deoxyribofuranosyl-furo[2,3-d]pyrimidin-2-one, was confirmed by X-ray crystallography, and its conformation was compared to related nucleosides. Diverse alkynyl substituents were introduced at the heterobicyclic base C-5 position via Sonogashira coupling of 5-iodo-2'-deoxyribofuranosyl-furo[2,3-d]pyrimidin-2-ones. The resulting compounds had fluorescence emissions of 452-481 nm. High quantum yields of 0.53-0.60 were observed for 9-ethynyl-9-fluorenol and propargyl alcohol/methyl ether-modified furopyrimidines. These modified nucleosides, designed in the form of ribose acetyl esters, are potential tools for fluorescent tagging, studying nucleoside metabolism, 2'-deoxyribonucleoside kinase activity, and antiviral activity. Antiviral assays against a broad spectrum of DNA and RNA viruses showed that in human embryonic lung (HEL) cell cultures some of the compounds posess antiviral activity (EC50 1.3-13.2 μM) against varicella-zoster virus (VZV). The alkynyl furopyrimidine with two p-pentylphenyl substituents emerged as the best compound with reasonable and selective anti-VZV activity, confirming p-pentylphenyl potency as a pharmacophore.
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Affiliation(s)
- Renata Kaczmarek
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363, Łódź, Poland
| | - Dylan J Twardy
- Department of Chemistry, Oakland University, 146 Library Drive, Rochester, MI, 48309-4479, USA
| | - Trevor L Olson
- Department of Chemistry, Oakland University, 146 Library Drive, Rochester, MI, 48309-4479, USA
| | - Dariusz Korczyński
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363, Łódź, Poland
| | - Graciela Andrei
- Rega Institute, Department of Microbiology, Immunology and Transplantation, Herestraat 49, 3000, Leuven, Belgium
| | - Robert Snoeck
- Rega Institute, Department of Microbiology, Immunology and Transplantation, Herestraat 49, 3000, Leuven, Belgium
| | - Rafał Dolot
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363, Łódź, Poland
| | - Kraig A Wheeler
- Department of Chemistry, Whitworth University, 300 W. Hawthorne Rd., Spokane, WA, 99251, USA
| | - Roman Dembinski
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363, Łódź, Poland; Department of Chemistry, Oakland University, 146 Library Drive, Rochester, MI, 48309-4479, USA.
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Kaczmarek R, Korczyński D, Green JR, Dembinski R. Extension of the 5-alkynyluridine side chain via C-C-bond formation in modified organometallic nucleosides using the Nicholas reaction. Beilstein J Org Chem 2020; 16:1-8. [PMID: 31976010 PMCID: PMC6964655 DOI: 10.3762/bjoc.16.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 11/14/2019] [Indexed: 01/15/2023] Open
Abstract
Dicobalt hexacarbonyl nucleoside complexes of propargyl ether or esters of 5-substituted uridines react with diverse C-nucleophiles. Synthetic outcomes confirmed that the Nicholas reaction can be carried out in a nucleoside presence, leading to a divergent synthesis of novel metallo-nucleosides enriched with alkene, arene, arylketo, and heterocyclic functions, in the deoxy and ribo series.
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Affiliation(s)
- Renata Kaczmarek
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Dariusz Korczyński
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - James R Green
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario, N9B 3P4, Canada
| | - Roman Dembinski
- Department of Bioorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
- Department of Chemistry, Oakland University, 146 Library Drive, Rochester, Michigan 48309-4479, USA
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Kaczmarek R, Korczyński D, Królewska‐Golińska K, Wheeler KA, Chavez FA, Mikus A, Dembinski R. Organometallic Nucleosides: Synthesis and Biological Evaluation of Substituted Dicobalt Hexacarbonyl 2'-Deoxy-5-oxopropynyluridines. ChemistryOpen 2018; 7:237-247. [PMID: 29531887 PMCID: PMC5838391 DOI: 10.1002/open.201700168] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Indexed: 01/16/2023] Open
Abstract
Reactions of dicobalt octacarbonyl [Co2(CO)8] with 2'-deoxy-5-oxopropynyluridines and related compounds gave dicobalt hexacarbonyl nucleoside complexes (83-31 %). The synthetic outcomes were confirmed by X-ray structure determination of dicobalt hexacarbonyl 2'-deoxy-5-(4-hydroxybut-1-yn-1-yl)uridine, which exhibits intermolecular hydrogen bonding between a modified base and ribose. The electronic structure of this compound was characterized by the DFT calculations. The growth inhibition of HeLa and K562 cancer cell lines by organometallic nucleosides was examined and compared to that by alkynyl nucleoside precursors. Coordination of the dicobalt carbonyl moiety to the 2'-deoxy-5-alkynyluridines led to a significant increase in the cytotoxic potency. The cobalt compounds displayed antiproliferative activities with median inhibitory values (IC50) in the range of 20 to 80 μm for the HeLa cell line and 18 to 30 μm for the K562 cell line. Coordination of an acetyl-substituted cobalt nucleoside was expanded by using the 1,1-bis(diphenylphosphino)methane (dppm) ligand, which exhibited cytotoxicity at comparable levels. The formation of reactive oxygen species in the presence of cobalt compounds was determined in K562 cells. The results indicate that the mechanism of action for most antiproliferative cobalt compounds may be related to the induction of oxidative stress.
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Affiliation(s)
- Renata Kaczmarek
- Department of Bioorganic ChemistryCentre of Molecular and Macromolecular StudiesPolish Academy of SciencesSienkiewicza 11290–363ŁódźPoland
| | - Dariusz Korczyński
- Department of Bioorganic ChemistryCentre of Molecular and Macromolecular StudiesPolish Academy of SciencesSienkiewicza 11290–363ŁódźPoland
| | - Karolina Królewska‐Golińska
- Department of Bioorganic ChemistryCentre of Molecular and Macromolecular StudiesPolish Academy of SciencesSienkiewicza 11290–363ŁódźPoland
| | - Kraig A. Wheeler
- Department of ChemistryWhitworth University300 W. Hawthorne Rd.SpokaneWA99251USA
| | - Ferman A. Chavez
- Department of ChemistryOakland University146 Library DriveRochesterMI48309-4479USA
| | - Agnieszka Mikus
- Department of ChemistryOakland University146 Library DriveRochesterMI48309-4479USA
| | - Roman Dembinski
- Department of Bioorganic ChemistryCentre of Molecular and Macromolecular StudiesPolish Academy of SciencesSienkiewicza 11290–363ŁódźPoland
- Department of ChemistryOakland University146 Library DriveRochesterMI48309-4479USA
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Borodina EA, Orlova NA, Gatilov YV, Sal’nikova OI. Reaction of polyfluorinated chalcones with guanidine. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2016. [DOI: 10.1134/s1070428015120143] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Mantovani AC, Goulart TAC, Back DF, Menezes PH, Zeni G. Iron(III) Chloride and Diorganyl Diselenides-Mediated 6-endo-dig Cyclization of Arylpropiolates and Arylpropiolamides Leading to 3-Organoselenyl-2H-coumarins and 3-Organoselenyl-quinolinones. J Org Chem 2014; 79:10526-36. [DOI: 10.1021/jo502199q] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
| | | | | | - Paulo Henrique Menezes
- Departamento
de Química Fundamental, Universidade Federal de Pernambuco, UFPE, Recife, Pernambuco 50740-560, Brazil
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Li J, Shi W, Yang W, Kang Z, Zhang M, Song L. First synthesis of unexpected functionalized trifluoromethylated 8-oxa-2,4-diazaspiro[5.5]undecanes via one-pot MCRs. RSC Adv 2014. [DOI: 10.1039/c4ra03199g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The present study describes the first example of the synthesis of functionalized trifluoromethylated 8-oxa-2,4-diazaspiro[5.5]undecanes via one-pot MCRs.
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Affiliation(s)
- Jia Li
- Department of Chemistry
- School of Science
- Shanghai University
- Shanghai 200444, China
| | - Wei Shi
- Department of Chemistry
- School of Science
- Shanghai University
- Shanghai 200444, China
| | - WenXin Yang
- Department of Chemistry
- School of Science
- Shanghai University
- Shanghai 200444, China
| | - ZhangPing Kang
- Department of Chemistry
- School of Science
- Shanghai University
- Shanghai 200444, China
| | - Min Zhang
- Department of Chemistry
- School of Science
- Shanghai University
- Shanghai 200444, China
| | - LiPing Song
- Department of Chemistry
- School of Science
- Shanghai University
- Shanghai 200444, China
- Key Laboratory of Organofluorine Chemistry
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Ryabukhin DS, Sorokoumov VN, Savicheva EA, Boyarskiy VP, Balova IA, Vasilyev AV. Catalytic activity of palladium acyclic diaminocarbene complexes in the synthesis of 1,3-diarylpropynones via Sonogashira reaction: cross- versus homo-coupling. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.02.086] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Synthesis and biological studies of a novel series of 4-(4-(1H-imidazol-1-yl)phenyl)-6-arylpyrimidin-2-amines. Med Chem Res 2013. [DOI: 10.1007/s00044-013-0523-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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Raffa G, Balme G, Monteiro N. Direct Access to Fully Substituted 3-Formyl-4-iodofurans through Iodocyclization of α-Alkynyl β-Alkoxy Enones. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201203] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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12
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Efficient palladium-mediated or base-induced 5-endo-dig cyclisation of C5-alkynylated pyrimidine derivatives: conventional and microwave-assisted synthesis of novel furo[2,3-d]pyrimidines. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.07.068] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Vinosha B, Perumal S, Renuga S, Almansour AI. A facile domino protocol for the stereoselective synthesis of trans-2,3-dihydrobenzofurans and cis-5,6-dihydrofuro[2,3-d]pyrimidines. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.12.047] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Li Y, Wheeler KA, Dembinski R. Room temperature syntheses of entirely diverse substituted β-fluorofurans. Org Biomol Chem 2012; 10:2395-408. [DOI: 10.1039/c1ob06693e] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Gai BM, Stein AL, Roehrs JA, Bilheri FN, Nogueira CW, Zeni G. Synthesis and antidepressant-like activity of selenophenes obtained via iron(III)-PhSeSePh-mediated cyclization of Z-selenoenynes. Org Biomol Chem 2011; 10:798-807. [PMID: 22120691 DOI: 10.1039/c1ob06548c] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We present here the synthesis and antidepressant-like action of a series of 2,5-disubstituted-3-(organoseleno)-selenophenes prepared by a novel synthetic route, the FeCl(3)-diorganyl dichalcogenide-mediated intramolecular cyclization of (Z)-chalcogenoenynes. The cyclized products were obtained in good yields. The results showed that 2c, 2d, 2e and 2o, evaluated in the mouse forced-swimming test, elicited an antidepressant-like activity. The studies clearly show that the phenyl group at the 2-position and an organoselenium group at the 3-position of the selenophene ring are essential for the antidepressant-like activity of selenophenes. A close inspection of the results also revealed that the fluorophenyl portion in the organoselenium group is fundamental for the antidepressant-like action of this class of organochalcogens.
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Affiliation(s)
- Bibiana M Gai
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNE, UFSM, Santa Maria-Rio Grande do Sul, Brasil
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Godoi B, Sperança A, Bruning CA, Back DF, Menezes PH, Nogueira CW, Zeni G. Iron(III) Chloride/Diorganyl Diselenides-Promoted Regioselective Cyclization of Alkynyl Aryl Ketones: Synthesis of 3-Organoselenyl Chromenones under Ambient Atmosphere. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100189] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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Li Y, Wheeler KA, Dembinski R. Electrophilic Cyclizations of 2-Fluoroalk-3-yn-1-ones: Room-Temperature Synthesis of Diversely 2,5-Disubstituted 3,4-Fluorohalofurans. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100344] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Godoi B, Schumacher RF, Zeni G. Synthesis of heterocycles via electrophilic cyclization of alkynes containing heteroatom. Chem Rev 2011; 111:2937-80. [PMID: 21425870 DOI: 10.1021/cr100214d] [Citation(s) in RCA: 573] [Impact Index Per Article: 44.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Benhur Godoi
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNE, UFSM, Santa Maria-Rio Grande do Sul, Brazil 97105-900
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Li Y, Wheeler KA, Dembinski R. Gold(I)-Catalyzed Cycloisomerization of 2-Fluoroalk-3-yn-1-ones: Synthesis of 2,5-Substituted 3-Fluorofurans. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000411] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Raffa G, Rusch M, Balme G, Monteiro N. A Pd-catalyzed heteroannulation approach to 2,3-disubstituted furo[3,2-c]coumarins. Org Lett 2010; 11:5254-7. [PMID: 19856926 DOI: 10.1021/ol902189q] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The Pd-catalyzed cyclofunctionalization of 3-alkynyl-4-methoxycoumarins with aryl halides resulted in the selective formation of 3-arylfuro[3,2-c]coumarins in lieu of the expected regioisomeric 3-arylfuro[2,3-b]chromones. A mechanism involving the linear to angular rearrangement of a Pd-containing furan intermediate was proposed.
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Affiliation(s)
- Guillaume Raffa
- ICBMS, Institut de Chimie et Biochimie Moléculaire et Supramoléculaire, CNRS UMR 5246, Université Lyon 1, ESCPE Lyon 43, Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
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Dias-Jurberg I, Gagosz F, Zard SZ. Unusual Approach to Branched 3-Alkynylamides and to 1,5-Dihydropyrrol-2-ones. Org Lett 2010; 12:416-9. [DOI: 10.1021/ol902472r] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Igor Dias-Jurberg
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole Polytechnique, 91128 Palaiseau Cedex, France
| | - Fabien Gagosz
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole Polytechnique, 91128 Palaiseau Cedex, France
| | - Samir Z. Zard
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole Polytechnique, 91128 Palaiseau Cedex, France
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Sniady A, Sevilla MD, Meneni S, Lis T, Szafert S, Khanduri D, Finke JM, Dembinski R. Synthesis and EPR studies of 2'-deoxyuridines with alkynyl, rodlike linkages. Chemistry 2009; 15:7569-77. [PMID: 19609983 PMCID: PMC4596529 DOI: 10.1002/chem.200900481] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Sonogashira coupling of diacetyl 5-ethynyl-2'-deoxyuridine with diacetyl 5-iodo-2'-deoxyuridine gave the acylated ethynediyl-linked 2'-deoxyuridine dimer (3 b; 63%), which was deprotected with ammonia/methanol to give ethynediyl-linked 2'-deoxyuridines (3 a; 79%). Treatment of 5-ethynyl-2'-deoxyuridine (1 a) with 5-iodo-2'-deoxyuridine gave the furopyrimidine linked to 2'-deoxyuridine (78%). Catalytic oxidative coupling of 1 a (O(2), CuI, Pd/C, N,N-dimethylformamide) gave butadiynediyl-linked 2'-deoxyuridines (4; 84 %). Double Sonogashira coupling of 5-iodo-2'-deoxyuridine with 1,4-diethynylbenzene gave 1,4-phenylenediethynediyl-bridged 2'-deoxyuridines (5; 83%). Cu-catalyzed cycloisomerization of dimers 4 and 5 gave their furopyrimidine derivatives. One-electron addition to 1 a, 3 a, and 4 gave the anion radical, the EPR spectra of which showed that the unpaired electron is largely localized at C6 of one uracil ring (17 G doublet) at 77 K. The EPR spectra of the one-electron-oxidized derivatives of ethynediyl- and butadiynediyl-linked uridines 3 a and 4 at 77 K showed that the unpaired electron is delocalized over both rings. Therefore, structures 3 a and 4 provide an efficient electronic link for hole conduction between the uracil rings. However, for the excess electron, an activation barrier prevents coupling to both rings. These dimeric structures could provide a gate that would separate hole transfer from electron transport between strands in DNA systems. In the crystal structure of acylated dimer 3 b, the bases were found in the anti position relative to each other across the ethynyl link, and similar anti conformation was preserved in the derived furopyrimidine-deoxyuridine dinucleoside.
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Affiliation(s)
- Adam Sniady
- Department of Chemistry and Center for Biomedical Research, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, USA
| | - Michael D. Sevilla
- Department of Chemistry and Center for Biomedical Research, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, USA
| | - Srinivasarao Meneni
- Department of Chemistry and Center for Biomedical Research, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, USA
| | - Tadeusz Lis
- Department of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland
| | - Slawomir Szafert
- Department of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland
| | - Deepthi Khanduri
- Department of Chemistry and Center for Biomedical Research, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, USA
| | - John M. Finke
- Department of Chemistry and Center for Biomedical Research, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, USA
| | - Roman Dembinski
- Department of Chemistry and Center for Biomedical Research, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, USA
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Xie YX, Yan ZY, Wang DZ, Wu LY, Qian B, Liu XY, Liang YM. Synthesis of Polysubstituted 3-Iodopyrans by Electrophilic Cyclization. European J Org Chem 2009. [DOI: 10.1002/ejoc.200801259] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Bukhari MH, Siddiqui HL, Ahmad N, Siddiqui WA, Parvez M. 4-(4-Bromophenyl)-6-(4-chlorophenyl)pyrimidin-2-ylamine. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o390. [PMID: 21581985 PMCID: PMC2968275 DOI: 10.1107/s1600536809002748] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2008] [Accepted: 01/22/2009] [Indexed: 11/18/2022]
Abstract
The title compound, C16H11BrClN3, contains pairs of molecules lying about inversion centers linked by amino–pyrimidine N—H⋯N hydrogen bonds. The eight-membered rings thus formed are represented by the R22(8) motif in graph-set notation. The second H atom of the amine group shows a rather weak interaction with two Br atoms, resulting in bifurcated N—H⋯(Br,Br) hydrogen bonds. The dihedral angles between the mean planes of the benzene rings and the mean plane of the heterocyclic ring are 8.98 (15) and 35.58 (10)°. The Br and Cl atoms show substitutional disorder, with site-occupancy factors of 0.599 (2) and 0.401 (2), respectively.
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25
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Wyrębek P, Sniady A, Bewick N, Li Y, Mikus A, Wheeler KA, Dembinski R. Microwave-assisted zinc chloride-catalyzed synthesis of substituted pyrroles from homopropargyl azides. Tetrahedron 2009. [DOI: 10.1016/j.tet.2008.11.094] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Sniady A, Durham A, Morreale MS, Marcinek A, Szafert S, Lis T, Brzezinska KR, Iwasaki T, Ohshima T, Mashima K, Dembinski R. Zinc-Catalyzed Cycloisomerizations. Synthesis of Substituted Furans and Furopyrimidine Nucleosides. J Org Chem 2008; 73:5881-9. [PMID: 18597532 DOI: 10.1021/jo8007995] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Adam Sniady
- Department of Chemistry, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, Institute of Applied Radiation Chemistry, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland, Department of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland, Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Audrey Durham
- Department of Chemistry, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, Institute of Applied Radiation Chemistry, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland, Department of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland, Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Marco S. Morreale
- Department of Chemistry, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, Institute of Applied Radiation Chemistry, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland, Department of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland, Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Andrzej Marcinek
- Department of Chemistry, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, Institute of Applied Radiation Chemistry, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland, Department of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland, Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Slawomir Szafert
- Department of Chemistry, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, Institute of Applied Radiation Chemistry, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland, Department of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland, Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Tadeusz Lis
- Department of Chemistry, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, Institute of Applied Radiation Chemistry, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland, Department of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland, Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Krystyna R. Brzezinska
- Department of Chemistry, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, Institute of Applied Radiation Chemistry, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland, Department of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland, Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Takanori Iwasaki
- Department of Chemistry, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, Institute of Applied Radiation Chemistry, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland, Department of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland, Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Takashi Ohshima
- Department of Chemistry, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, Institute of Applied Radiation Chemistry, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland, Department of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland, Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Kazushi Mashima
- Department of Chemistry, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, Institute of Applied Radiation Chemistry, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland, Department of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland, Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Roman Dembinski
- Department of Chemistry, Oakland University, 2200 N. Squirrel Rd., Rochester, Michigan 48309-4477, Institute of Applied Radiation Chemistry, Technical University of Lodz, Zeromskiego 116, 90-924 Lodz, Poland, Department of Chemistry, University of Wroclaw, F. Joliot-Curie 14, 50-383 Wroclaw, Poland, Materials Research Laboratory, University of California, Santa Barbara, California 93106, and Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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27
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Sniady A, Morreale MS, Wheeler KA, Dembinski R. Room-Temperature Electrophilic 5-endo-digChlorocyclization of Alk-3-yn-1-ones with the Use of Pool Sanitizer: Synthesis of 3-Chlorofurans and 5-Chlorofuropyrimidine Nucleosides. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800397] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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28
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Application and details of photoinduced oxidative cyclization of 5-(4′,9′-methanocycloundeca-2′,4′,6′,8′,10′-pentaenylidene)pyrimidine-2,4,6(1,3,5H)-triones and related compounds. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.01.084] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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29
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Xie YX, Liu XY, Wu LY, Han Y, Zhao LB, Fan MJ, Liang YM. Efficient Synthesis of Substituted 3-Iodofurans by Electrophilic Cyclization of Propargylic Oxirane Derivatives. European J Org Chem 2008. [DOI: 10.1002/ejoc.200700963] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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30
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Dudnik AS, Sromek AW, Rubina M, Kim JT, Kel’in AV, Gevorgyan V. Metal-catalyzed 1,2-shift of diverse migrating groups in allenyl systems as a new paradigm toward densely functionalized heterocycles. J Am Chem Soc 2008; 130:1440-52. [PMID: 18173272 PMCID: PMC3686647 DOI: 10.1021/ja0773507] [Citation(s) in RCA: 256] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A general, mild, and efficient 1,2-migration/cycloisomerization methodology toward multisubstituted 3-thio-, seleno-, halo-, aryl-, and alkyl-furans and pyrroles, as well as fused heterocycles, valuable building blocks for synthetic chemistry, has been developed. Moreover, regiodivergent conditions have been identified for C-4 bromo- and thio-substituted allenones and alkynones for the assembly of regioisomeric 2-hetero substituted furans selectively. It was demonstrated that, depending on reaction conditions, ambident substrates can be selectively transformed into furan products, as well as undergo selective 6-exo-dig or Nazarov cyclizations. Our mechanistic investigations have revealed that the transformation proceeds via allenylcarbonyl or allenylimine intermediates followed by 1,2-group migration to the allenyl sp carbon during cycloisomerization. It was found that 1,2-migration of chalcogens and halogens predominantly proceeds via formation of irenium intermediates. Analogous intermediate can also be proposed for 1,2-aryl shift. Furthermore, it was shown that the cycloisomerization cascade can be catalyzed by Brønsted acids, albeit less efficiently, and commonly observed reactivity of Lewis acid catalysts cannot be attributed to the eventual formation of proton. Undoubtedly, thermally induced or Lewis acid-catalyzed transformations proceed via intramolecular Michael addition or activation of the enone moiety pathways, whereas certain carbophilic metals trigger carbenoid/oxonium type pathway. However, a facile cycloisomerization in the presence of cationic complexes, as well as observed migratory aptitude in the cycloisomerization of unsymmetrically disubstituted aryl- and alkylallenes, strongly supports electrophilic nature for this transformation. Full mechanistic details, as well as the scope of this transformation, are discussed.
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Affiliation(s)
- Alexander S. Dudnik
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
| | - Anna W. Sromek
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
| | - Marina Rubina
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
| | - Joseph T. Kim
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
| | - Alexander V. Kel’in
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
| | - Vladimir Gevorgyan
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
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31
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Sergeant CD, Ott I, Sniady A, Meneni S, Gust R, Rheingold AL, Dembinski R. Metallo-nucleosides: synthesis and biological evaluation of hexacarbonyl dicobalt 5-alkynyl-2′-deoxyuridines. Org Biomol Chem 2008; 6:73-80. [DOI: 10.1039/b713371e] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Bew SP, El-Taeb GMM, Jones S, Knight DW, Tan WF. Expedient Syntheses of β-Iodofurans by 5-endo-dig Cyclisations. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700681] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Hayes SJ, Knight DW, Menzies MD, O’Halloran M, Tan WF. An efficient furan synthesis using heterogeneous catalysis. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.08.102] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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34
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Meneni S, Ott I, Sergeant CD, Sniady A, Gust R, Dembinski R. 5-Alkynyl-2'-deoxyuridines: chromatography-free synthesis and cytotoxicity evaluation against human breast cancer cells. Bioorg Med Chem 2007; 15:3082-8. [PMID: 17336074 PMCID: PMC2577600 DOI: 10.1016/j.bmc.2007.01.048] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2006] [Revised: 01/22/2007] [Accepted: 01/26/2007] [Indexed: 12/01/2022]
Abstract
Starting with 5-iodo-2'-deoxyuridine, a series of 5-alkynyl-2'-deoxyuridines (with n-propyl, cyclopropyl, 1-hydroxycyclohexyl, p-tolyl, p-tert-butylphenyl, p-pentylphenyl, and trimethylsilyl alkyne substituents) have been synthesized via the palladium-catalyzed (Sonogashira) coupling reaction followed by a simplified isolation protocol (76-94% yield). The cytotoxic activity of modified nucleosides against MCF-7 and MDA-MB-231 human breast cancer cells has been determined in vitro. 5-Ethynyl-2'-deoxyuridine, the only nucleoside in the series containing a terminal acetylene, is the most potent inhibitor with IC(50) (microM) 0.4+/-0.3 for MCF-7 and 4.4+/-0.4 for MDA-MB-231.
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Affiliation(s)
- Srinivasarao Meneni
- Department of Chemistry and Center for Biomedical Research, Oakland University, 2200 N. Squirrel Rd., Rochester, MI 48309-4477, USA
| | - Ingo Ott
- Institute of Pharmacy, Free University of Berlin, Königin Luise Str. 2+4, 14195 Berlin, Germany
| | - Craig D. Sergeant
- Department of Chemistry and Center for Biomedical Research, Oakland University, 2200 N. Squirrel Rd., Rochester, MI 48309-4477, USA
| | - Adam Sniady
- Department of Chemistry and Center for Biomedical Research, Oakland University, 2200 N. Squirrel Rd., Rochester, MI 48309-4477, USA
| | - Ronald Gust
- Institute of Pharmacy, Free University of Berlin, Königin Luise Str. 2+4, 14195 Berlin, Germany
| | - Roman Dembinski
- Department of Chemistry and Center for Biomedical Research, Oakland University, 2200 N. Squirrel Rd., Rochester, MI 48309-4477, USA
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35
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Barange DK, Batchu VR, Gorja D, Pattabiraman VR, Tatini LK, Babu JM, Pal M. Regioselective construction of six-membered fused heterocyclic rings via Pd/C-mediated C–C coupling followed by iodocyclization strategy: a new entry to 2H-1,2-benzothiazine-1,1-dioxides. Tetrahedron 2007. [DOI: 10.1016/j.tet.2006.12.040] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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36
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Liu Z, Li D, Li S, Bai D, He X, Hu Y. Synthesis of novel 5,6-substituted furo[2,3-d]pyrimidines via Pd-catalyzed cyclization of alkynylpyrimidinols with aryl iodides. Tetrahedron 2007. [DOI: 10.1016/j.tet.2006.12.077] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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37
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On the viability of 5-endo-dig cyclisations of O-propargylic hydroxylamine derivatives, leading to 2,5-dihydroisoxazoles (3-isoxazolines). Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2006.11.114] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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38
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Ghilagaber S, Hunter WN, Marquez R. Efficient coupling of low boiling point alkynes and 5-iodonucleosides. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2006.11.047] [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]
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39
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One-pot synthesis of 2-substituted furo[3,2-c]quinolines via tandem coupling–cyclization under Pd/C-copper catalysis. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.08.025] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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40
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Karpov AS, Merkul E, Oeser T, Müller TJJ. One-Pot Three-Component Synthesis of 3-Halofurans and 3-Chloro-4-iodofurans. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600225] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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41
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Janeba Z, Maklad N, Robins MJ. An efficient alternative route to 3,6-disubstituted-furo[2,3-d]pyrimidin-2-one analogues. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2006; 24:1729-43. [PMID: 16438044 DOI: 10.1080/10810730500265757] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Copper(I)-catalyzed 5-endo-dig cyclizations of 5-(alkyn-1-yl)uracil derivatives had given poor yields of substituted furo[2,3-d]pyrimidin-2-ones unless the uracil ring was substituted at N1 with alkyl or glycosyl groups. This limited flexibility for the synthesis of analogues with varied substituents at N3 and/or C6 of the furo[2,3-d]pyrimidin-2-one core has been overcome with 5-(3-hydroxyalkyn-1-yl)uracil compounds with no substituent at N1. Manipulation of the side-chain hydroxyl group gives access to additional furo[2,3-d]pyrinmidin-2-one analogues.
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Affiliation(s)
- Zlatko Janeba
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602-5700, USA
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42
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Aillaud I, Bossharth E, Conreaux D, Desbordes P, Monteiro N, Balme G. A Synthetic Entry to Furo[2,3-b]pyridin-4(1H)-ones and Related Furoquinolinones via Iodocyclization. Org Lett 2006; 8:1113-6. [PMID: 16524281 DOI: 10.1021/ol053048w] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] N-Methyl-4-alkoxy-3-alkynylpyridin-2(1H)-ones readily undergo iodine-promoted 5-endo-heteroannulation under mild conditions to 3-iodofuropyridinium triiodide salts in moderate to good yields. The latter may be dealkylated in situ upon exposure to an iodide anion to provide the corresponding 3-iodofuro[2,3-b]pyridin-4(1H)-ones. The same strategy applies to the formation of furo[2,3-b]quinolin-4(9H)-ones.
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Affiliation(s)
- Isabelle Aillaud
- Laboratoire de Synthèse Organométallique et Molécules Bioactives, CNRS UMR 5181, Université Claude Bernard-Lyon I, ESCPE Lyon. 43, Bd du 11 Novembre 1918, 69622 Villeurbanne, France
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43
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Yue D, Yao T, Larock RC. Synthesis of 3-iodoindoles by the Pd/Cu-catalyzed coupling of N,N-dialkyl-2-iodoanilines and terminal acetylenes, followed by electrophilic cyclization. J Org Chem 2006; 71:62-9. [PMID: 16388618 PMCID: PMC2556959 DOI: 10.1021/jo051549p] [Citation(s) in RCA: 139] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] 3-Iodoindoles have been prepared in excellent yields by coupling terminal acetylenes with N,N-dialkyl-o-iodoanilines in the presence of a Pd/Cu catalyst, followed by an electrophilic cyclization of the resulting N,N-dialkyl-o-(1-alkynyl)anilines using I2 in CH2Cl2. Aryl-, vinylic-, alkyl-, and silyl-substituted terminal acetylenes undergo this process to produce excellent yields of 3-iodoindoles. The reactivity of the carbon-nitrogen bond cleavage during cyclization follows the following order: Me > n-Bu, Me > Ph, and cyclohexyl > Me. Subsequent palladium-catalyzed Sonogashira, Suzuki, and Heck reactions of the resulting 3-iodoindoles proceed smoothly in good yields.
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Affiliation(s)
- Dawei Yue
- Department of Chemistry, Iowa State University, Ames, IA 50011,
| | - Tuanli Yao
- Department of Chemistry, Iowa State University, Ames, IA 50011,
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45
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Esho N, Desaulniers JP, Davies B, Chui HMP, Rao MS, Chow CS, Szafert S, Dembinski R. NMR conformational analysis of p-tolyl furanopyrimidine 2'-deoxyribonucleoside and crystal structure of its 3',5'-di-O-acetyl derivative. Bioorg Med Chem 2005; 13:1231-8. [PMID: 15670932 DOI: 10.1016/j.bmc.2004.11.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2004] [Revised: 11/08/2004] [Accepted: 11/08/2004] [Indexed: 11/16/2022]
Abstract
The conformation of a representative molecule of a new, potent class of antiviral-active modified nucleosides is determined. A bicyclic nucleoside, 3-(2'-deoxy-beta-D-ribofuranosyl)-6-(4-methylphenyl)-2,3-dihydrofuro[2,3-d]pyrimidin-2-one, shows C2'-endo and C3'-endo ribose conformations in solution (63:37, 37 degrees C; DMSO-d6), as determined by 1H NMR studies. The crystal structure of a 3',5'-di-O-acetyl-protected derivative (monoclinic, P21, a/b/c= 6.666(1)/12.225(1)/24.676(2) A, beta=90.24(1) degrees , Z=4) shows exclusively C2'-endo deoxyribose puckering. The base is found in the anti position both in solution and in crystalline form.
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Affiliation(s)
- Noor Esho
- Department of Chemistry and Center for Biomedical Research, Oakland University, 2200 N. Squirrel Rd, Rochester, MI 48309-4477, USA
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46
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Alabugin IV, Manoharan M. 5-Endo-Dig Radical Cyclizations: “The Poor Cousins” of the Radical Cyclizations Family. J Am Chem Soc 2005; 127:9534-45. [PMID: 15984880 DOI: 10.1021/ja050976h] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Kinetics and thermodynamics of 5-endo-dig radical cyclizations were studied using a combination of DFT computations and Marcus theory. When the reactant is stabilized by conjugation of the radical center with the bridge pi-system, the cyclization starts with reorientation of the radical orbital needed to reach the in-plane acetylene pi-orbital in the bond-forming step. This reorientation leads to loss of the above conjugative stabilization, increases the activation energy, and renders such cyclizations less exothermic. As a result, even when the radical needed for the 5-endo cyclization is formed efficiently, it undergoes either H-abstraction or equilibration with an isomeric radical. Only when the bridging moiety is saturated or when intramolecular constraints prevent the overlap of the bridge pi-orbital and the radical center, 5-endo cyclizations may be able to proceed with moderate efficiency under conditions when H-abstraction is slow. The main remaining caveat in designing such geometrically constrained 5-endo-dig cyclizations is their sensitivity to strain effects, especially when polycyclic systems are formed. The strain effects can be counterbalanced by increasing the stabilization of the product (e.g., by introducing heteroatoms into the bridging moiety). Electronic effects of such substitutions can be manifested in various ways, ranging from aromatic stabilization to a hyperconjugative beta-Si effect. The 4-exo-dig cyclization is kinetically competitive with the 5-endo-dig process but less favorable thermodynamically. As a result, by proper design of reaction conditions, 5-endo-dig radical cyclizations should be experimentally feasible.
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Affiliation(s)
- Igor V Alabugin
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, USA.
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47
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Yao T, Campo MA, Larock RC. Synthesis of polycyclic aromatics and heteroaromatics via electrophilic cyclization. J Org Chem 2005; 70:3511-7. [PMID: 15844984 DOI: 10.1021/jo050104y] [Citation(s) in RCA: 135] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] A variety of substituted polycyclic aromatics are readily prepared in good to excellent yields under very mild reaction conditions by the reaction of 2-(1-alkynyl)biphenyls with ICl, I(2), NBS, and p-O(2)NC(6)H(4)SCl. This methodology readily accommodates various functional groups and has been successfully extended to systems containing a variety of polycyclic and heterocyclic rings.
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Affiliation(s)
- Tuanli Yao
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
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Yao T, Campo MA, Larock RC. Synthesis of Polycyclic Aromatic Iodides via ICl-Induced Intramolecular Cyclization. Org Lett 2004; 6:2677-80. [PMID: 15281742 DOI: 10.1021/ol049161o] [Citation(s) in RCA: 127] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction of 2-(arylethynyl)biphenyls with ICl at -78 degrees C affords substituted polycyclic aromatic iodides in good to excellent yields. The aryl substituents can be either electron-donating or electron-withdrawing groups such as OMe, Me, CHO, CO(2)Et or NO(2) groups. This chemistry has been successfully extended to systems containing a variety of polycyclic and heterocyclic rings. [reaction: see text]
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Affiliation(s)
- Tuanli Yao
- Department of Chemistry, Iowa State University, Ames, IA 50011, USA
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