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Popov AM, Degenkova LG, Moskovkina TV, Grammatikova NE, Kuzmich AS, Chernikov OV, Schekotichin AE, Stonik VA. Biological Activity and Probable Mechanisms of Action of Derivatives of Tryptanthrin and Mostotrin Alkaloids. DOKL BIOCHEM BIOPHYS 2022; 507:363-366. [PMID: 36787003 DOI: 10.1134/s1607672922340105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 10/25/2022] [Accepted: 10/25/2022] [Indexed: 02/15/2023]
Abstract
The alkaloid tryptanthrin and its water-soluble derivative mostotrin exhibit high antimicrobial and antitumor activity. To develop more active and less toxic preparations, syntheses and testing of the biological activities of a number of new and/or little-studied analogs were performed. Some of them have been shown to have higher cytotoxicity against tumor and microbial cells than tryptanthrin and mostotrin. Thus, 8-fluorotryptanthrin effectively inhibits the proliferation of various tumor cell lines, namely: K-562/4, HCT-116 and HCT-116p53ko at lower concentrations than tryptanthrin, and 2,8-difluorostotrin exhibits a stronger antimicrobial effect against pathogenic bacteria S. aureus ATCC 29213 than mostotrin. It has been established that the antiproliferative properties of 8-fluorotryptanthrin and 8-fluoromostotrin are associated with their ability in nanomolar concentrations to inhibit the cell cycle of tumor cells at the stage of transition from the G1 phase to the S phase. The data obtained indicate the prospects for further in-depth studies of their antitumor properties.
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Affiliation(s)
- A M Popov
- Elyakov Pacific Institute Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Science, 690022, Vladivostok, Russia.
| | - L G Degenkova
- Gauze Research Institute of New Antibiotics, 119021, Moscow, Russia
| | - T V Moskovkina
- Institute of High Technologies and Advanced Materials, Far East Federal University, 690920, Vladivostok, Russia
| | - N E Grammatikova
- Gauze Research Institute of New Antibiotics, 119021, Moscow, Russia
| | - A S Kuzmich
- Elyakov Pacific Institute Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Science, 690022, Vladivostok, Russia
| | - O V Chernikov
- Elyakov Pacific Institute Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Science, 690022, Vladivostok, Russia
| | - A E Schekotichin
- Gauze Research Institute of New Antibiotics, 119021, Moscow, Russia
| | - V A Stonik
- Elyakov Pacific Institute Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Science, 690022, Vladivostok, Russia
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2
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Benassi E. An inexpensive density functional theory-based protocol to predict accurate 19 F-NMR chemical shifts. J Comput Chem 2022; 43:170-183. [PMID: 34757623 DOI: 10.1002/jcc.26780] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 10/14/2021] [Accepted: 10/19/2021] [Indexed: 01/31/2023]
Abstract
Thanks to its advantages, 19 F-NMR is an increasingly popular technique for the structural characterization of F-containing molecules, among which polymers, materials, fluorophores, pharmaceuticals, and so forth. However, the computational calculation of the 19 F-NMR chemical shifts, both for prediction and interpretation of experimental spectra, remains a challenge. In this work a density functional theory (DFT) based protocol for the calculation of the chemical shifts is established within the framework of the gauge-independent atomic orbital method, upon verifying the performance of Hartree-Fock and 60 DFT functionals coupled with seven different basis sets. The benchmark is conducted using two sets of molecules, namely one used for testing methods and another used for probing; the former set consists of 134 molecules, the latter 50, yet both of them with F in different chemical environments. Following Bally-Rablen-Tantillo strategy, the scaling parameters and other statistical quantities were computed for each method upon least squares linear regression between experimental and computed chemical shifts. The designed computational workflow is computationally inexpensive and represents a significant improvement with respect to the current state of the art.
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Affiliation(s)
- Enrico Benassi
- Faculty of Chemistry, Novosibirsk State University, Novosibirsk, Russia
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3
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Smith AJR, York R, Uhrín D, Bell NGA. New 19F NMR methodology reveals structures of molecules in complex mixtures of fluorinated compounds. Chem Sci 2022; 13:3766-3774. [PMID: 35432904 PMCID: PMC8966635 DOI: 10.1039/d1sc06057k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 02/25/2022] [Indexed: 11/24/2022] Open
Abstract
Although the number of natural fluorinated compounds is very small, fluorinated pharmaceuticals and agrochemicals are numerous. 19F NMR spectroscopy has a great potential for the structure elucidation of fluorinated organic molecules, starting with their production by chemical or chemoenzymatic reactions, through monitoring their structural integrity, to their biotic and abiotic transformation and ultimate degradation in the environment. Additionally, choosing to incorporate 19F into any organic molecule opens a convenient route to study reaction mechanisms and kinetics. Addressing limitations of the existing 19F NMR techniques, we have developed methodology that uses 19F as a powerful spectroscopic spy to study mixtures of fluorinated molecules. The proposed 19F-centred NMR analysis utilises the substantial resolution and sensitivity of 19F to obtain a large number of NMR parameters, which enable structure determination of fluorinated compounds without the need for their separation or the use of standards. Here we illustrate the 19F-centred structure determination process and demonstrate its power by successfully elucidating the structures of chloramination disinfectant by-products of a single mono-fluorinated phenolic compound, which would have been impossible otherwise. This novel NMR approach for the structure elucidation of molecules in complex mixtures represents a major contribution towards the analysis of chemical and biological processes involving fluorinated compounds. 19F-centred NMR structure determination protocol alleviates the need for compound separation. Disinfection byproducts of chloramination were unraveled by analyzing the reaction pathways of a single fluorinated molecule.![]()
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Affiliation(s)
- Alan J R Smith
- EaStCHEM School of Chemistry, University of Edinburgh David Brewster Rd Edinburgh EH9 3FJ UK
| | - Richard York
- EaStCHEM School of Chemistry, University of Edinburgh David Brewster Rd Edinburgh EH9 3FJ UK
| | - Dušan Uhrín
- EaStCHEM School of Chemistry, University of Edinburgh David Brewster Rd Edinburgh EH9 3FJ UK
| | - Nicholle G A Bell
- EaStCHEM School of Chemistry, University of Edinburgh David Brewster Rd Edinburgh EH9 3FJ UK
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4
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Cao TQ, Kim JA, Woo MH, Min BS. SARS-CoV-2 main protease inhibition by compounds isolated from Luffa cylindrica using molecular docking. Bioorg Med Chem Lett 2021; 40:127972. [PMID: 33753260 PMCID: PMC7977011 DOI: 10.1016/j.bmcl.2021.127972] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 03/10/2021] [Accepted: 03/13/2021] [Indexed: 12/03/2022]
Abstract
In this study, chemical investigation of methanol extract of the air-dried fruits of Luffa cylindrica led to the identification of a new δ‐valerolactone (1), along with sixteen known compounds (2–17). Their chemical structures including the absolute configuration were elucidated by extensive spectroscopic analysis and electronic circular dichroism analysis, as well as by comparison with those reported in the literature. For the first time in literature, we have examined the binding potential of the isolated compounds to highly conserved protein, Mpro of SARS-CoV-2 using the molecular docking technique. We found that the isolated saponins (14–17) bind to the substrate‐binding pocket of SARS-CoV-2 Mpro with docking energy scores of –7.13, –7.29, –7.47, and –7.54 kcal.mol−1, respectively, along with binding abilities equivalent to an already claimed N3 protease inhibitor (–7.51 kcal.mol−1).
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Affiliation(s)
- Thao Quyen Cao
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea; Institute of Pharmaceutical Research and Development, College of Pharmacy, Wonkwang University, Iksan 54538, Republic of Korea
| | - Jeong Ah Kim
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Mi Hee Woo
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongbuk 38430, Republic of Korea.
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5
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Chen G, Wang X, Jiang Y, Mu X, Liu H. Insights into deactivation mechanism of sulfonated carbonaceous solid acids probed by cellulose hydrolysis. Catal Today 2019; 319:25-30. [DOI: 10.1016/j.cattod.2018.03.069] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Fuchibe K, Fujita T, Ichikawa J. Pinpoint-Fluorinated Polycyclic Aromatic Hydrocarbons (F-PAHs): Their Synthesis via Electrophilic Activation of Fluoroalkenes and Properties. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.938] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | - Junji Ichikawa
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba
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7
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An D, Guo C, Chen Y. Analysis of Polycyclic Aromatic Hydrocarbon (PAH) Mixtures Using Diffusion-Ordered NMR Spectroscopy and Adsorption by Powdered Activated Carbon and Biochar. Materials (Basel) 2018; 11:E460. [PMID: 29561761 DOI: 10.3390/ma11040460] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 03/19/2018] [Accepted: 03/19/2018] [Indexed: 01/13/2023]
Abstract
Analysis of polycyclic aromatic hydrocarbons (PAHs) in air and water sources is a key part of environmental chemistry research, since most PAHs are well known to be associated with negative health impacts on humans. This study explores an approach for analyzing PAH mixtures with advanced nuclear magnetic resonance (NMR) spectroscopic techniques including high-resolution one-dimensional (1D) NMR spectroscopy and diffusion-ordered NMR spectroscopy (DOSY NMR). With this method, different kinds of PAHs can be detected and differentiated from a mixture with high resolution. The adsorption process of PAH mixtures by PAC and biochar was studied to understand the mechanism and assess the method.
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8
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Fuchibe K, Shigeno K, Zhao N, Aihara H, Akisaka R, Morikawa T, Fujita T, Yamakawa K, Shimada T, Ichikawa J. Pinpoint-fluorinated polycyclic aromatic hydrocarbons (F-PAHs): Syntheses of difluorinated subfamily and their properties. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.09.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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9
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Singh BB, Shakil NA, Kumar J, Rana VS, Mishra A. Microwave synthesis, characterization, and bio-efficacy of novel halogenated Schiff bases. J Environ Sci Health B 2016; 51:558-570. [PMID: 27167104 DOI: 10.1080/03601234.2016.1170558] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A new series of halogenated Schiff bases was synthesized by the condensation of 5-fluoro-2-hydroxy acetophenone and 3,5-dichloro-2-hydroxy acetophenone with different alkyl amines, namely propyl, pentyl, hexyl, heptyl, octyl, nonyl, dodecyl, tetradecyl, hexadecyl, and octadecyl amines, under microwave irradiation. Newly formed molecules were characterized by Infrared and nuclear magnetic resonance ((1)H NMR and (13)C NMR) spectroscopic techniques. Further, the Schiff bases were screened for antifungal bioassay, and the results showed potential fungicidal activity against two very important plant infecting fungi, viz. Rhizoctonia solani and Sclerotium rolfsii. Among the screened compounds, 2,4-dichloro-2-[1-(propylimino)ethyl]phenol was found to be the most active compound against both R. solani (ED50 8.02 mg L(-1)) and S. rolfsii (ED50 21.51 mg L(-1)) followed by 2,4-dichloro-2-[1-(pentylimino) ethyl]phenol (ED50 13.02 and 29.57 mg L(-1), respectively). The synthesized compounds were also screened for antioxidant activity by 2,2-diphenyl-1-picrylhydrazyl (DPPH)-free radical scavenging technique. All the compounds showed very low to moderate activity as compared with Gallic acid.
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Affiliation(s)
- Braj B Singh
- a Division of Agricultural Chemicals, Indian Agricultural Research Institute , New Delhi , India
- b School of Vocational Studies and Applied Sciences, Gautam Buddha University , Greater Noida , Uttar Pradesh , India
| | - Najam A Shakil
- a Division of Agricultural Chemicals, Indian Agricultural Research Institute , New Delhi , India
| | - Jitendra Kumar
- a Division of Agricultural Chemicals, Indian Agricultural Research Institute , New Delhi , India
| | - Virendra S Rana
- a Division of Agricultural Chemicals, Indian Agricultural Research Institute , New Delhi , India
| | - Anuradha Mishra
- b School of Vocational Studies and Applied Sciences, Gautam Buddha University , Greater Noida , Uttar Pradesh , India
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10
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Banerjee S, Sinha S, Pradhan P, Caruso A, Liebowitz D, Parrish D, Rossi M, Zajc B. Regiospecifically Fluorinated Polycyclic Aromatic Hydrocarbons via Julia-Kocienski Olefination and Oxidative Photocyclization. Effect of Fluorine Atom Substitution on Molecular Shape. J Org Chem 2016; 81:3983-93. [PMID: 27009471 PMCID: PMC4874880 DOI: 10.1021/acs.joc.5b02580] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A modular synthesis of regiospecifically fluorinated polycyclic aromatic hydrocarbons (PAHs) is described. 1,2-Diarylfluoroalkenes, synthesized via Julia-Kocienski olefination (70-99% yields), were converted to isomeric 5- and 6-fluorobenzo[c]phenanthrene, 5-and 6-fluorochrysene, and 9- and 10-benzo[g]chrysene (66-83% yields) by oxidative photocyclization. Photocyclization to 6-fluorochrysene proceeded more slowly than conversion of 1-styrylnaphthalene to chrysene. Higher fluoroalkene dilution led to a more rapid cyclization. Therefore, photocyclizations were performed at higher dilutions. To evaluate the effect of fluorine atom on molecular shapes, X-ray data for 5- and 6-fluorobenzo[c]phenanthrene, 6-fluorochrysene, 9- and 10-fluorobenzo[g]chrysene, and unfluorinated chrysene as well as benzo[g]chrysene were obtained and compared. The fluorine atom caused a small deviation from planarity in the chrysene series and decreased nonplanarity in the benzo[c]phenanthrene derivatives, but its influence was most pronounced in the benzo[g]chrysene series. A remarkable flattening of the molecule was observed in 9-fluorobenzo[g]chrysene, where the short 2.055 Å interatomic distance between bay-region F-9 and H-8, downfield shift of H-8, and a 26.1 Hz coupling between F-9 and C-8 indicate a possible F-9···H-8 hydrogen bond. In addition, in 9-fluorobenzo[g]chrysene, the stacking distance is short at 3.365 Å and there is an additional interaction between the C-11-H and C-10a of a nearby molecule that is almost perpendicular.
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Affiliation(s)
- Shaibal Banerjee
- Department of Chemistry, The City College of New York, 160
Convent Avenue, New York, New York 10031, United States
| | - Saikat Sinha
- Department of Chemistry, The City College of New York, 160
Convent Avenue, New York, New York 10031, United States
| | - Padmanava Pradhan
- Department of Chemistry, The City College of New York, 160
Convent Avenue, New York, New York 10031, United States
| | - Alessio Caruso
- Department of Chemistry, Vassar College, Poughkeepsie, New
York 12604, United States
| | - Daniel Liebowitz
- Department of Chemistry, Vassar College, Poughkeepsie, New
York 12604, United States
| | - Damon Parrish
- Naval Research Laboratory, Code 6030, 4555 Overlook Avenue,
Washington D.C. 20375, United States
| | - Miriam Rossi
- Department of Chemistry, Vassar College, Poughkeepsie, New
York 12604, United States
| | - Barbara Zajc
- Department of Chemistry, The City College of New York, 160
Convent Avenue, New York, New York 10031, United States
- The Ph.D. Program in Chemistry, The Graduate Center of The
City University of New York, New York, New York 10016, United States
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11
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Choi Y, Chatterjee T, Kim J, Kim JS, Cho EJ. Synthesis of cyclopenta-fused polycyclic aromatic hydrocarbons utilizing aryl-substituted anilines. Org Biomol Chem 2016; 14:6804-10. [DOI: 10.1039/c6ob01235c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclopenta-fused polycyclic aromatic hydrocarbons were synthesized from readily available 2-aryl-substituted anilines under extremely mild conditions.
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Affiliation(s)
- Yeojin Choi
- Department of Chemistry
- Chung-Ang University
- Dongjak-gu
- Republic of Korea
| | - Tanmay Chatterjee
- Department of Chemistry
- Chung-Ang University
- Dongjak-gu
- Republic of Korea
| | - Jun Kim
- Department of Chemistry
- Chung-Ang University
- Dongjak-gu
- Republic of Korea
| | - Jun Soo Kim
- Department of Chemistry & Nanoscience
- Ewha Womans University
- Seoul 03760
- Republic of Korea
| | - Eun Jin Cho
- Department of Chemistry
- Chung-Ang University
- Dongjak-gu
- Republic of Korea
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12
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Wombacher T, Foro S, Schneider JJ. High-Yielding Synthesis and Full Spectroscopic Characterization of 5,6:11,12-Di-o-phenylenetetracene and Its Synthesis Intermediates. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501228] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Escolà A, Crespo M, Quirante J, Cortés R, Jayaraman A, Badía J, Baldomà L, Calvet T, Font-Bardía M, Cascante M. Exploring the Scope of [Pt2(4-FC6H4)4(μ-SEt2)2] as a Precursor for New Organometallic Platinum(II) and Platinum(IV) Antitumor Agents. Organometallics 2014. [DOI: 10.1021/om5000908] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Anna Escolà
- Departament de Química Inorgànica,
Facultat de Química, Universitat de Barcelona, Diagonal
645, 08028 Barcelona, Spain
| | - Margarita Crespo
- Departament de Química Inorgànica,
Facultat de Química, Universitat de Barcelona, Diagonal
645, 08028 Barcelona, Spain
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain
| | - Josefina Quirante
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain
- Laboratori de Química
Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Avenida Joan XXIII, s/n, 08028 Barcelona, Spain
| | - Roldán Cortés
- Department of Biochemistry
and Molecular Biology, Faculty of Biology, Universitat de Barcelona, and IDIBAPS, Unit Associated with CSIC, Diagonal 643, 08028 Barcelona, Spain
| | - Anusha Jayaraman
- Department of Biochemistry
and Molecular Biology, Faculty of Biology, Universitat de Barcelona, and IDIBAPS, Unit Associated with CSIC, Diagonal 643, 08028 Barcelona, Spain
| | - Josefa Badía
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain
- Departament de Bioquímica
i Biologia Molecular, Facultat de Farmàcia, Avenida Joan XXIII s/n, 08028 Barcelona, Spain
| | - Laura Baldomà
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain
- Departament de Bioquímica
i Biologia Molecular, Facultat de Farmàcia, Avenida Joan XXIII s/n, 08028 Barcelona, Spain
| | - Teresa Calvet
- Departament
de Cristal·lografia, Mineralogia i Dipòsits Minerals,
Facultat de Geologia, Universitat de Barcelona, Martí i Franquès s/n, 08028 Barcelona, Spain
| | - Mercè Font-Bardía
- Departament
de Cristal·lografia, Mineralogia i Dipòsits Minerals,
Facultat de Geologia, Universitat de Barcelona, Martí i Franquès s/n, 08028 Barcelona, Spain
- Unitat de Difracció de Raigs-X, Centre Científic i Tecnològic de la Universitat de Barcelona (CCiTUB), Solé
i Sabarís, 1-3, 08028 Barcelona, Spain
| | - Marta Cascante
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Barcelona, Spain
- Department of Biochemistry
and Molecular Biology, Faculty of Biology, Universitat de Barcelona, and IDIBAPS, Unit Associated with CSIC, Diagonal 643, 08028 Barcelona, Spain
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14
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Gandioso A, Valle-Sistac J, Rodrı́guez L, Crespo M, Font-Bardı́a M. Platinum(II) Compounds Containing Cyclometalated Tridentate Ligands: Synthesis, Luminescence Studies, and a Selective Fluoro for Methoxy Substitution. Organometallics 2014. [DOI: 10.1021/om401111t] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Albert Gandioso
- Departament de Quı́mica
Inorgànica, Facultat de Quı́mica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Jennifer Valle-Sistac
- Departament de Quı́mica
Inorgànica, Facultat de Quı́mica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Laura Rodrı́guez
- Departament de Quı́mica
Inorgànica, Facultat de Quı́mica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Margarita Crespo
- Departament de Quı́mica
Inorgànica, Facultat de Quı́mica, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Mercè Font-Bardı́a
- Unitat de Difracció de Raigs-X, Centres Científics
i Tecnològics de la Universitat de Barcelona (CCiTUB), Universitat de Barcelona, Solé i Sabarís, 1-3, 08028 Barcelona, Spain
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15
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Sene S, Berthomieu D, Donnadieu B, Richeter S, Vezzani J, Granier D, Bégu S, Mutin H, Gervais C, Laurencin D. A combined experimental-computational study of benzoxaborole crystal structures. CrystEngComm 2014. [DOI: 10.1039/c4ce00313f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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16
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Abstract
Convergent synthetic pathways were devised for efficient synthesis of a series of uniformly (13)C labeled polycyclic aromatic hydrocarbons de novo from U-(13)C-benzene and other simple commercially-available (13)C-starting compounds. All target products were obtained in excellent yields, including the alternant PAH U-(13)C-naphthalene, U-(13)C-phenanthrene, U-(13)C-anthracene, U-(13)C-benz[a]anthracene, U-(13)C-pyrene and the nonalternant PAH U-(13)C-fluoranthene.
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Affiliation(s)
- Zhenfa Zhang
- Department of Environmental Sciences and Engineering, CB7431, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
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17
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Borodkin GI, Elanov IR, Shubin VG. Fluorination of Bi- and polycyclic aromatic hydrocarbons with N-fluorobis(phenylsulfonyl)amine in the absence of solvent. Russ J Org Chem 2010. [DOI: 10.1134/s1070428010090095] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Busacca CA, Campbell S, Gonnella NC, Senanayake CH. 1H and 13C NMR assignments of all three isomeric o-fluoronaphthaldehydes and three o-fluorophenanthrene aldehydes. Magn Reson Chem 2010; 48:74-79. [PMID: 19810003 DOI: 10.1002/mrc.2523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Three isomeric o-fluoronaphthaldehydes, 9-fluorophenanthrene, and three previously unreported o-fluorophenanthrene aldehydes were analyzed in detail by multiple NMR techniques to provide unambiguous assignment of structures and resonances. The six aldehydes serve as the key starting materials for novel chiral ligands used in highly enantioselective rhodium-catalyzed asymmetric hydrogenation reactions.
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Affiliation(s)
- Carl A Busacca
- Department of Chemical Development, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, CT 06877, USA.
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19
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Nagy P, Fekete J, Sharma VK. Monofluorinated Polycyclic Aromatic Hydrocarbons: Surrogate Standards for HPLC Analysis of Surface Water and Sediment Samples. J LIQ CHROMATOGR R T 2007. [DOI: 10.1080/10826070701738969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Peter Nagy
- a Institute of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics , Budapest, Hungary
| | - Jeno Fekete
- a Institute of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics , Budapest, Hungary
| | - Virender K. Sharma
- b Chemistry Department , Florida Institute of Technology , Melbourne, Florida, USA
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Abstract
A novel inherently conducting polymer, high-quality polyfluoranthene (PFA) film with electrical conductivity of 10(-2) S cm(-1), was first synthesized electrochemically by direct anodic oxidation of fluoranthene in a middle strong Lewis acid-boron trifluoride diethyl etherate. The oxidation potential onset of fluoranthene in this medium was measured to be only 1.07 V vs SCE, which was much lower than that in acetonitrile + 0.1 mol L(-1) tetrabutylammonium tetrafluoroborate (1.68 V vs SCE). This PFA film showed good redox activity and stability even in concentrated sulfuric acid. Moreover, the fluorescence properties of PFA were greatly improved in comparison with those of the monomer. Dedoped PFA films were partly soluble in polar solvents such as CH(2)Cl(2), acetone, tetrahedrofuran, and dimethyl sulfoxide. The structure and morphology of the polymer were investigated by UV-vis spectroscopy, infrared spectroscopy, and scanning electron microscopy, respectively. The results of quantum chemistry calculations of fluoranthene monomer and (1)H NMR spectroscopy of dedoped PFA films indicated that the polymerization mainly occurred at C((3)), C((4)), C((13)), and C((14)) positions.
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Affiliation(s)
- Jingkun Xu
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China.
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