1
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Ieremias L, Kaspersen MH, Manandhar A, Schultz-Knudsen K, Vrettou CI, Pokhrel R, Heidtmann CV, Jenkins L, Kanellou C, Marsango S, Li Y, Bräuner-Osborne H, Rexen Ulven E, Milligan G, Ulven T. Structure-Activity Relationship Studies and Optimization of 4-Hydroxypyridones as GPR84 Agonists. J Med Chem 2024; 67:3542-3570. [PMID: 38381650 DOI: 10.1021/acs.jmedchem.3c01923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
GPR84 is a putative medium-chain fatty acid receptor that is implicated in regulation of inflammation and fibrogenesis. Studies have indicated that GPR84 agonists may have therapeutic potential in diseases such as Alzheimer's disease, atherosclerosis, and cancer, but there is a lack of quality tool compounds to explore this potential. The fatty acid analogue LY237 (4a) is the most potent GPR84 agonist disclosed to date but has unfavorable physicochemical properties. We here present a SAR study of 4a. Several highly potent agonists were identified with EC50 down to 28 pM, and with SAR generally in excellent agreement with structure-based modeling. Proper incorporation of rings and polar groups resulted in the identification of TUG-2099 (4s) and TUG-2208 (42a), both highly potent GPR84 agonists with lowered lipophilicity and good to excellent solubility, in vitro permeability, and microsomal stability, which will be valuable tools for exploring the pharmacology and therapeutic prospects of GPR84.
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Affiliation(s)
- Loukas Ieremias
- Department of Drug Design and Pharmacology, Faculty of Health, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Copenhagen, Denmark
| | - Mads H Kaspersen
- Department of Drug Design and Pharmacology, Faculty of Health, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Copenhagen, Denmark
- Department of Physics, Chemistry and Pharmacy, Faculty of Science, University of Southern Denmark, Campusvej 55, 5230 Odense M, Odense, Denmark
| | - Asmita Manandhar
- Department of Drug Design and Pharmacology, Faculty of Health, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Copenhagen, Denmark
| | - Katrine Schultz-Knudsen
- Department of Drug Design and Pharmacology, Faculty of Health, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Copenhagen, Denmark
| | - Christina Ioanna Vrettou
- Department of Drug Design and Pharmacology, Faculty of Health, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Copenhagen, Denmark
| | - Rina Pokhrel
- Department of Drug Design and Pharmacology, Faculty of Health, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Copenhagen, Denmark
| | - Christoffer V Heidtmann
- Department of Physics, Chemistry and Pharmacy, Faculty of Science, University of Southern Denmark, Campusvej 55, 5230 Odense M, Odense, Denmark
| | - Laura Jenkins
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K
| | - Christina Kanellou
- Department of Drug Design and Pharmacology, Faculty of Health, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Copenhagen, Denmark
| | - Sara Marsango
- Department of Drug Design and Pharmacology, Faculty of Health, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Copenhagen, Denmark
| | - Yueming Li
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K
| | - Hans Bräuner-Osborne
- Department of Drug Design and Pharmacology, Faculty of Health, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Copenhagen, Denmark
| | - Elisabeth Rexen Ulven
- Department of Drug Design and Pharmacology, Faculty of Health, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Copenhagen, Denmark
| | - Graeme Milligan
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K
| | - Trond Ulven
- Department of Drug Design and Pharmacology, Faculty of Health, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen Ø, Copenhagen, Denmark
- Department of Physics, Chemistry and Pharmacy, Faculty of Science, University of Southern Denmark, Campusvej 55, 5230 Odense M, Odense, Denmark
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2
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Vasu D, Do HT, Li H, Hardy CD, Awasthi A, Poulos TL, Silverman RB. Potent, Selective, and Membrane Permeable 2-Amino-4-Substituted Pyridine-Based Neuronal Nitric Oxide Synthase Inhibitors. J Med Chem 2023; 66:9934-9953. [PMID: 37433128 PMCID: PMC10824152 DOI: 10.1021/acs.jmedchem.3c00782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
Abstract
A series of potent, selective, and highly permeable human neuronal nitric oxide synthase inhibitors (hnNOS), based on a difluorobenzene ring linked to a 2-aminopyridine scaffold with different functionalities at the 4-position, is reported. In our efforts to develop novel nNOS inhibitors for the treatment of neurodegenerative diseases, we discovered 17, which showed excellent potency toward both rat (Ki 15 nM) and human nNOS (Ki 19 nM), with 1075-fold selectivity over human eNOS and 115-fold selectivity over human iNOS. 17 also showed excellent permeability (Pe = 13.7 × 10-6 cm s-1), a low efflux ratio (ER 0.48), along with good metabolic stability in mouse and human liver microsomes, with half-lives of 29 and >60 min, respectively. X-ray cocrystal structures of inhibitors bound with three NOS enzymes, namely, rat nNOS, human nNOS, and human eNOS, revealed detailed structure-activity relationships for the observed potency, selectivity, and permeability properties of the inhibitors.
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Affiliation(s)
- Dhananjayan Vasu
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Developmental Therapeutics, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Ha T. Do
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Developmental Therapeutics, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Huiying Li
- Departments of Molecular Biology and Biochemistry, Pharmaceutical Sciences, and Chemistry, University of California, Irvine, California 92697-3900, United States
| | - Christine D. Hardy
- Departments of Molecular Biology and Biochemistry, Pharmaceutical Sciences, and Chemistry, University of California, Irvine, California 92697-3900, United States
| | - Amardeep Awasthi
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Developmental Therapeutics, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Thomas L. Poulos
- Departments of Molecular Biology and Biochemistry, Pharmaceutical Sciences, and Chemistry, University of California, Irvine, California 92697-3900, United States
| | - Richard B. Silverman
- Department of Chemistry, Department of Molecular Biosciences, Chemistry of Life Processes Institute, Center for Developmental Therapeutics, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
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3
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Martín CDMG, García JIH, Bonardd S, Díaz DD. Lignin-Based Catalysts for C-C Bond-Forming Reactions. Molecules 2023; 28:molecules28083513. [PMID: 37110747 PMCID: PMC10141373 DOI: 10.3390/molecules28083513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/01/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
Carbon-carbon (C-C) bond formation is the key reaction in organic synthesis to construct the carbon framework of organic molecules. The continuous shift of science and technology toward eco-friendly and sustainable resources and processes has stimulated the development of catalytic processes for C-C bond formation based on the use of renewable resources. In this context, and among other biopolymer-based materials, lignin has attracted scientific attention in the field of catalysis during the last decade, either through its acid form or as a support for metal ions and metal nanoparticles that drive the catalytic activity. Its heterogeneous nature, as well as its facile preparation and low cost, provide competitive advantages over other homogeneous catalysts. In this review, we have summarized a variety of C-C formation reactions, such as condensations, Michael additions of indoles, and Pd-mediated cross-coupling reactions that were successfully carried out in the presence of lignin-based catalysts. These examples also involve the successful recovery and reuse of the catalyst after the reaction.
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Affiliation(s)
- Cristina Del Mar García Martín
- Instituto de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
| | - José Ignacio Hernández García
- Instituto de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
- Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Spain
| | - Sebastián Bonardd
- Instituto de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
- Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Spain
| | - David Díaz Díaz
- Instituto de Bio-Orgánica Antonio González, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
- Departamento de Química Orgánica, Universidad de La Laguna, Avda. Astrofísico Francisco Sánchez 3, 38206 La Laguna, Spain
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4
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Microwave-Assisted Synthesis: Can Transition Metal Complexes Take Advantage of This “Green” Method? Molecules 2022; 27:molecules27134249. [PMID: 35807493 PMCID: PMC9267986 DOI: 10.3390/molecules27134249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/27/2022] [Accepted: 06/28/2022] [Indexed: 01/27/2023] Open
Abstract
Microwave-assisted synthesis is considered environmental-friendly and, therefore, in agreement with the principles of green chemistry. This form of energy has been employed extensively and successfully in organic synthesis also in the case of metal-catalyzed synthetic procedures. However, it has been less widely exploited in the synthesis of metal complexes. As microwave irradiation has been proving its utility as both a time-saving procedure and an alternative way to carry on tricky transformations, its use can help inorganic chemists, too. This review focuses on the use of microwave irradiation in the preparation of transition metal complexes and organometallic compounds and also includes new, unpublished results. The syntheses of the compounds are described following the group of the periodic table to which the contained metal belongs. A general overview of the results from over 150 papers points out that microwaves can be a useful synthetic tool for inorganic chemists, reducing dramatically the reaction times with respect to traditional heating. This is often accompanied by a more limited risk of decomposition of reagents or products by an increase in yield, purity, and (sometimes) selectivity. In any case, thermal control is operative, whereas nonthermal or specific microwave effects seem to be absent.
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5
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Duc DX, Quoc NV. Microwave-assisted, Copper-free Sonogashira Coupling Between Aryl Halides and Terminal Alkynes Using Recyclable Ionic Liquid and Catalyst. LETT ORG CHEM 2022. [DOI: 10.2174/1570178618666210820101129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
:
An efficient method for the Sonogashira coupling reaction between aryl halides and terminal
alkynes has been developed. The reaction was performed in ionic liquid 1-butyl-3-
methylimidazolium tetrafluoroborate ([Bmim][BF4]) under microwave irradiation. High yields of
products were obtained in a very short reaction time. Moreover, the medium and catalyst could be
recovered and reused three times without considerable decrease in reaction yields.
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Affiliation(s)
- Dau Xuan Duc
- Department of Chemistry, Institute of Natural Education Sciences, Vinh University, Vinh City, Vietnam
| | - Nguyen Van Quoc
- Department of Chemistry, Institute of Natural Education Sciences, Vinh University, Vinh City, Vietnam
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6
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Helbert H, Visser P, Hermens JGH, Buter J, Feringa BL. Palladium-catalysed cross-coupling of lithium acetylides. Nat Catal 2020. [DOI: 10.1038/s41929-020-0485-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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7
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Wang J, Mannan MS, Wilhite BA. Integrated thermodynamic and kinetic model of homogeneous catalytic
N
‐oxidation processes. AIChE J 2019. [DOI: 10.1002/aic.16875] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jingyao Wang
- Artie McFerrin Department of Chemical EngineeringTexas A&M University College Station Texas
- Mary Kay O'Connor Process Safety CenterTexas A&M University College Station Texas
| | - M. Sam Mannan
- Artie McFerrin Department of Chemical EngineeringTexas A&M University College Station Texas
- Mary Kay O'Connor Process Safety CenterTexas A&M University College Station Texas
| | - Benjamin A. Wilhite
- Artie McFerrin Department of Chemical EngineeringTexas A&M University College Station Texas
- Mary Kay O'Connor Process Safety CenterTexas A&M University College Station Texas
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8
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Kazakova AV, Konev AS, Zorin IM, Poshekhonov IS, Korzhikov-Vlakh VA, Khlebnikov AF. PEG-modified aziridines for stereoselective synthesis of water-soluble fulleropyrrolidines. Org Biomol Chem 2019; 17:9864-9873. [PMID: 31670347 DOI: 10.1039/c9ob01949a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Diastereoselective synthesis of water-soluble fullerene compounds bearing a pharmacophore pyrrolofullerene-2',5'-dicarboxylate unit is reported. The stereocontrol of the product configuration is achieved through stereospecificity of two consecutive concerted reactions: electrocyclic aziridine ring opening followed by 1,3-dipolar cycloaddition of the resulting azomethyne ylide. The solubility in water (up to 20 μM through direct dissolution) is secured by introducing a polyethylene glycol (PEG) hydrophilic pendant. The structure and molecular-mass distribution of the resulting PEGylated fulleropyrrolidines are exhaustively characterized by 1H, 13C NMR and HRMS. According to absorbance spectroscopy, AFM and DLS studies, the synthesized compound tends to aggregate in aqueous media forming associates of ca. 4-9 nm radius surrounded by a solvation shell resulting in an effective hydrodynamic diameter of ca. 90 nm. In view of notable solubility in water, well-defined chemical structure and resemblance to the compounds with known anti-HIV activity, the synthesized PEGylated diethyl trans-pyrrolofullerene-2',5'-dicarboxylate might be an attractive candidate for biological evaluation.
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Affiliation(s)
- Angelina V Kazakova
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia.
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9
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Caracelli I, Zukerman-Schpector J, Schwab RS, da Silva EM, Jotani MM, Tiekink ERT. 2-Methyl-4-(4-nitro-phen-yl)but-3-yn-2-ol: crystal structure, Hirshfeld surface analysis and computational chemistry study. Acta Crystallogr E Crystallogr Commun 2019; 75:1232-1238. [PMID: 31417798 PMCID: PMC6690440 DOI: 10.1107/s2056989019010284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 07/18/2019] [Indexed: 11/26/2022]
Abstract
The di-substituted acetyl-ene residue in the title compound, C11H11NO3, is capped at either end by di-methyl-hydroxy and 4-nitro-benzene groups; the nitro substituent is close to co-planar with the ring to which it is attached [dihedral angle = 9.4 (3)°]. The most prominent feature of the mol-ecular packing is the formation, via hy-droxy-O-H⋯O(hy-droxy) hydrogen bonds, of hexa-meric clusters about a site of symmetry . The aggregates are sustained by 12-membered {⋯OH}6 synthons and have the shape of a flattened chair. The clusters are connected into a three-dimensional architecture by benzene-C-H⋯O(nitro) inter-actions, involving both nitro-O atoms. The aforementioned inter-actions are readily identified in the calculated Hirshfeld surface. Computational chemistry indicates there is a significant energy, primarily electrostatic in nature, associated with the hy-droxy-O-H⋯O(hy-droxy) hydrogen bonds. Dispersion forces are more important in the other identified but, weaker inter-molecular contacts.
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Affiliation(s)
- Ignez Caracelli
- Departamento de Física, Universidade Federal de São Carlos, 13565-905 São Carlos, SP, Brazil
| | | | - Ricardo S. Schwab
- Departamento de Química, Universidade Federal de São Carlos, 13565-905 São Carlos, SP, Brazil
| | - Everton M. da Silva
- Departamento de Química, Universidade Federal de São Carlos, 13565-905 São Carlos, SP, Brazil
| | - Mukesh M. Jotani
- Department of Physics, Bhavan’s Sheth R. A. College of Science, Ahmedabad, Gujarat 380001, India
| | - Edward R. T. Tiekink
- Research Centre for Crystalline Materials, School of Science and Technology, Sunway University, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
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10
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Capani JS, Cochran JE, Liang JC. CsF-Mediated in Situ Desilylation of TMS-Alkynes for Sonogashira Reaction. J Org Chem 2019; 84:9378-9384. [PMID: 31194913 DOI: 10.1021/acs.joc.9b01307] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A practical and mild set of conditions for the Sonogashira reaction utilizing CsF-mediated in situ TMS-alkyne desilylation followed by Sonogashira coupling has been developed for the synthesis of a variety of alkynyl benzenes and heteroarenes in good to excellent yields. This methodology demonstrates excellent functional group tolerance and simple purification, which allows large-scale industrial applications. This one-pot protocol enables a high-yielding Sonogashira coupling with volatile alkynes by avoiding challenging isolation of free alkynes.
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Affiliation(s)
- Joseph S Capani
- Vertex Pharmaceuticals Incorporated , 50 Northern Avenue , Boston , Massachusetts 02210 , United States
| | - John E Cochran
- Vertex Pharmaceuticals Incorporated , 50 Northern Avenue , Boston , Massachusetts 02210 , United States
| | - Jianglin Colin Liang
- Vertex Pharmaceuticals Incorporated , 50 Northern Avenue , Boston , Massachusetts 02210 , United States
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11
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Zhang W, Cheng J, Huang Z, Zhou Q, Chen X, Qian J. Palladium-catalysed alkynylation of 2- or 3-bromopyridine. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823406780199712] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
2- or 3-Alkynylpyridines were prepared using a palladium complex, in the absence of copper ions or amines. The mild procedure tolerated a range of 1-alkynes giving 2- or 3-alkynylpyridine in moderate to good yield.
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Affiliation(s)
- Weiwei Zhang
- Department of Chemistry, Wenzhou University, Mid. Xueyuan Rd, Wenzhou 325027, China
| | - Jiang Cheng
- Department of Chemistry, Wenzhou University, Mid. Xueyuan Rd, Wenzhou 325027, China
| | - Zhengxu Huang
- Department of Chemistry, Wenzhou University, Mid. Xueyuan Rd, Wenzhou 325027, China
| | - Qingqing Zhou
- Department of Chemistry, Wenzhou University, Mid. Xueyuan Rd, Wenzhou 325027, China
| | - Xunmin Chen
- Department of Chemistry, Wenzhou University, Mid. Xueyuan Rd, Wenzhou 325027, China
| | - Jianzhu Qian
- Department of Chemistry, Wenzhou University, Mid. Xueyuan Rd, Wenzhou 325027, China
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12
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Li Y, Feng X, Li Z. Visible-light-initiated Sonogashira coupling reactions over CuO/TiO2 nanocomposites. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02333f] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CuO/TiO2 nanocomposites with different weight ratios of CuO were obtained by immersing TiO2 in aqueous solution of Cu(NO3)2, followed by heat treatment at 400 °C.
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Affiliation(s)
- Yuanyuan Li
- Research Institute of Photocatalysis
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350116
| | - Xue Feng
- Research Institute of Photocatalysis
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350116
| | - Zhaohui Li
- Research Institute of Photocatalysis
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350116
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13
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Wang J, Huang Y, Wilhite BA, Papadaki M, Mannan MS. Toward the Identification of Intensified Reaction Conditions Using Response Surface Methodology: A Case Study on 3-Methylpyridine N-Oxide Synthesis. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03773] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jingyao Wang
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, 3122 TAMU, College Station, Texas 77843-3122, United States
- Mary Kay O’Connor Process Safety Center, Texas A&M University, 3122 TAMU, College Station, Texas 77843-3122, United States
| | - Yanyan Huang
- Department of Chemistry, Texas A&M University, College Station, Texas United States
- CAS Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China
| | - Benjamin A. Wilhite
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, 3122 TAMU, College Station, Texas 77843-3122, United States
- Mary Kay O’Connor Process Safety Center, Texas A&M University, 3122 TAMU, College Station, Texas 77843-3122, United States
| | - Maria Papadaki
- Mary Kay O’Connor Process Safety Center, Texas A&M University, 3122 TAMU, College Station, Texas 77843-3122, United States
- Department of Environmental and Natural Resources Management, School of Engineering, University of Patras, Seferi 2, Agrinio 30100, Greece
| | - M. Sam Mannan
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, 3122 TAMU, College Station, Texas 77843-3122, United States
- Mary Kay O’Connor Process Safety Center, Texas A&M University, 3122 TAMU, College Station, Texas 77843-3122, United States
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14
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Lindblad S, Mehmeti K, Veiga AX, Nekoueishahraki B, Gräfenstein J, Erdélyi M. Halogen Bond Asymmetry in Solution. J Am Chem Soc 2018; 140:13503-13513. [PMID: 30234293 PMCID: PMC6209183 DOI: 10.1021/jacs.8b09467] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Halogen bonding is the noncovalent interaction of halogen atoms in which they act as electron acceptors. Whereas three-center hydrogen bond complexes, [D···H···D]+ where D is an electron donor, exist in solution as rapidly equilibrating asymmetric species, the analogous halogen bonds, [D···X···D]+, have been observed so far only to adopt static and symmetric geometries. Herein, we investigate whether halogen bond asymmetry, i.e., a [D-X···D]+ bond geometry, in which one of the D-X bonds is shorter and stronger, could be induced by modulation of electronic or steric factors. We have also attempted to convert a static three-center halogen bond complex into a mixture of rapidly exchanging asymmetric isomers, [D···X-D]+ ⇄ [D-X···D]+, corresponding to the preferred form of the analogous hydrogen bonded complexes. Using 15N NMR, IPE NMR, and DFT, we prove that a static, asymmetric geometry, [D-X···D]+, is obtained upon desymmetrization of the electron density of a complex. We demonstrate computationally that conversion into a dynamic mixture of asymmetric geometries, [D···X-D]+ ⇄ [D-X···D]+, is achievable upon increasing the donor-donor distance. However, due to the high energetic gain upon formation of the three-center-four-electron halogen bond, the assessed complex strongly prefers to form a dimer with two static and symmetric three-center halogen bonds over a dynamic and asymmetric halogen bonded form. Our observations indicate a vastly different preference in the secondary bonding of H+ and X+. Understanding the consequences of electronic and steric influences on the strength and geometry of the three-center halogen bond provides useful knowledge on chemical bonding and for the development of improved halonium transfer agents.
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Affiliation(s)
- Sofia Lindblad
- Department of Chemistry and Molecular Biology , University of Gothenburg , SE-412 96 Gothenburg , Sweden.,Department of Chemistry - BMC , Uppsala University , SE-751 23 Uppsala , Sweden
| | - Krenare Mehmeti
- Department of Chemistry and Molecular Biology , University of Gothenburg , SE-412 96 Gothenburg , Sweden
| | - Alberte X Veiga
- Department of Chemistry and Molecular Biology , University of Gothenburg , SE-412 96 Gothenburg , Sweden
| | - Bijan Nekoueishahraki
- Department of Chemistry and Molecular Biology , University of Gothenburg , SE-412 96 Gothenburg , Sweden
| | - Jürgen Gräfenstein
- Department of Chemistry and Molecular Biology , University of Gothenburg , SE-412 96 Gothenburg , Sweden
| | - Máté Erdélyi
- Department of Chemistry and Molecular Biology , University of Gothenburg , SE-412 96 Gothenburg , Sweden.,Department of Chemistry - BMC , Uppsala University , SE-751 23 Uppsala , Sweden.,The Swedish NMR Centre , Medicinaregatan 5C , SE-413 90 Gothenburg , Sweden
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15
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Liu Y, Lou B, Shangguan L, Cai J, Zhu H, Shi B. Pillar[5]arene-Based Organometallic Cross-Linked Polymer: Synthesis, Structure Characterization, and Catalytic Activity in the Suzuki–Miyaura Coupling Reaction. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02701] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yuezhou Liu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Baohui Lou
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Liqing Shangguan
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Jingsong Cai
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Huangtianzhi Zhu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Bingbing Shi
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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16
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Kotha S, Aswar VR, Singhal G. Synthesis of tricyclic units of indole alkaloids: Application of Fischer indolization and olefin metathesis. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.09.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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17
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Liu X, Yin X, Liu Q, Lin B, Li Y. CuSO 4-Catalyzed Direct One-Pot Synthesis of Terminal Propargylic Amines from Trimethylsilylacetylene, Amines and Aldehydes through Fluoride-Free Desilylation. ChemistrySelect 2017. [DOI: 10.1002/slct.201701773] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xiaoping Liu
- Department of Chemistry; Jinan University; Guangzhou 510632 P. R. China
| | - Xiaoxin Yin
- Department of Chemistry; Jinan University; Guangzhou 510632 P. R. China
| | - Qiqi Liu
- Department of Chemistry; Jinan University; Guangzhou 510632 P. R. China
| | - Bijin Lin
- Department of Chemistry; Jinan University; Guangzhou 510632 P. R. China
| | - Yiqun Li
- Department of Chemistry; Jinan University; Guangzhou 510632 P. R. China
- Key Lab of Functional Molecular Engineering of Guangdong Province; South China University of Technology; Guangzhou 510640 P. R. China
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18
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Pierrat P, Hesse S, Cebrián C, Gros PC. Controlling charge-transfer properties through a microwave-assisted mono- or bis-annulation of dialkynyl-N-(het)arylpyrroles. Org Biomol Chem 2017; 15:8568-8575. [DOI: 10.1039/c7ob02149f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Charge-transfer properties dependence on mono or bisannulation of dialkynyl-N-(het)arylpyrroles is reported.
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Affiliation(s)
| | - Stéphanie Hesse
- Université de Lorraine – Metz & CNRS
- HéCRIn
- SRSMC
- 57078 Metz
- France
| | | | - Philippe C. Gros
- Université de Lorraine – Nancy & CNRS
- HéCRIn
- SRSMC
- 54506 Vandoeuvre-Lès-Nancy
- France
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19
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Jeon HG, Jang HB, Kang P, Choi YR, Kim J, Lee JH, Choi MG, Jeong KS. Helical Aromatic Foldamers Functioning as a Fluorescence Turn-on Probe for Anions. Org Lett 2016; 18:4404-7. [DOI: 10.1021/acs.orglett.6b02156] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hae-Geun Jeon
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Han Bit Jang
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Philjae Kang
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Ye Rin Choi
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Junyoung Kim
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Ji Hyun Lee
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Moon-Gun Choi
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Kyu-Sung Jeong
- Department of Chemistry, Yonsei University, Seoul 120-749, Korea
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20
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Carlsson ACC, Mehmeti K, Uhrbom M, Karim A, Bedin M, Puttreddy R, Kleinmaier R, Neverov AA, Nekoueishahraki B, Gräfenstein J, Rissanen K, Erdélyi M. Substituent Effects on the [N-I-N](+) Halogen Bond. J Am Chem Soc 2016; 138:9853-63. [PMID: 27265247 PMCID: PMC4981895 DOI: 10.1021/jacs.6b03842] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
![]()
We have investigated the influence
of electron density on the three-center
[N–I–N]+ halogen bond. A series of [bis(pyridine)iodine]+ and [1,2-bis((pyridine-2-ylethynyl)benzene)iodine]+ BF4– complexes substituted with electron
withdrawing and donating functionalities in the para-position of their pyridine nitrogen were synthesized and studied
by spectroscopic and computational methods. The systematic change
of electron density of the pyridine nitrogens upon alteration of the para-substituent (NO2, CF3, H, F,
Me, OMe, NMe2) was confirmed by 15N NMR and
by computation of the natural atomic population and the π electron
population of the nitrogen atoms. Formation of the [N–I–N]+ halogen bond resulted in >100 ppm 15N NMR coordination
shifts. Substituent effects on the 15N NMR chemical shift
are governed by the π population rather than the total electron
population at the nitrogens. Isotopic perturbation of equilibrium
NMR studies along with computation on the DFT level indicate that
all studied systems possess static, symmetric [N–I–N]+ halogen bonds, independent of their electron density. This
was further confirmed by single crystal X-ray diffraction data of
4-substituted [bis(pyridine)iodine]+ complexes. An increased
electron density of the halogen bond acceptor stabilizes the [N···I···N]+ bond, whereas electron deficiency reduces the stability of
the complexes, as demonstrated by UV-kinetics and computation. In
contrast, the N–I bond length is virtually unaffected by changes
of the electron density. The understanding of electronic effects on
the [N–X–N]+ halogen bond is expected to
provide a useful handle for the modulation of the reactivity of [bis(pyridine)halogen]+-type synthetic reagents.
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Affiliation(s)
- Anna-Carin C Carlsson
- Department of Chemistry and Molecular Biology, University of Gothenburg , SE-412 96 Gothenburg, Sweden
| | - Krenare Mehmeti
- Department of Chemistry and Molecular Biology, University of Gothenburg , SE-412 96 Gothenburg, Sweden
| | - Martin Uhrbom
- Department of Chemistry and Molecular Biology, University of Gothenburg , SE-412 96 Gothenburg, Sweden
| | - Alavi Karim
- Department of Chemistry and Molecular Biology, University of Gothenburg , SE-412 96 Gothenburg, Sweden
| | - Michele Bedin
- Department of Chemistry and Molecular Biology, University of Gothenburg , SE-412 96 Gothenburg, Sweden
| | - Rakesh Puttreddy
- Department of Chemistry, Nanoscience Center, University of Jyvaskyla , P.O. Box 35, Jyvaskyla FI-40014, Finland
| | - Roland Kleinmaier
- Department of Chemistry and Molecular Biology, University of Gothenburg , SE-412 96 Gothenburg, Sweden
| | - Alexei A Neverov
- Department of Chemistry, Queen's University , Kingston, Ontario K7L 3N6, Canada
| | - Bijan Nekoueishahraki
- Department of Chemistry and Molecular Biology, University of Gothenburg , SE-412 96 Gothenburg, Sweden
| | - Jürgen Gräfenstein
- Department of Chemistry and Molecular Biology, University of Gothenburg , SE-412 96 Gothenburg, Sweden
| | - Kari Rissanen
- Department of Chemistry, Nanoscience Center, University of Jyvaskyla , P.O. Box 35, Jyvaskyla FI-40014, Finland
| | - Máté Erdélyi
- Department of Chemistry and Molecular Biology, University of Gothenburg , SE-412 96 Gothenburg, Sweden.,The Swedish NMR Centre , Medicinaregatan 5, SE-413 90 Gothenburg, Sweden
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21
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Wittmeyer P, Traser S, Sander R, Sondergeld KB, Ungefug A, Weiss R, Rehahn M. Toward Truly Water-Soluble Rodlike Polyelectrolytes: Synthesis of Poly(para
-phenylenes) Wrapped in Ethylene Oxideand Amino Side Groups. MACROMOL CHEM PHYS 2016. [DOI: 10.1002/macp.201600001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Patrick Wittmeyer
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie; Technische Universität Darmstadt; Alarich-Weiss-Str. 4 D-64287 Darmstadt Germany
| | - Steffen Traser
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie; Technische Universität Darmstadt; Alarich-Weiss-Str. 4 D-64287 Darmstadt Germany
| | - Regina Sander
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie; Technische Universität Darmstadt; Alarich-Weiss-Str. 4 D-64287 Darmstadt Germany
| | - Katrin B. Sondergeld
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie; Technische Universität Darmstadt; Alarich-Weiss-Str. 4 D-64287 Darmstadt Germany
| | - Alexander Ungefug
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie; Technische Universität Darmstadt; Alarich-Weiss-Str. 4 D-64287 Darmstadt Germany
| | - Richard Weiss
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie; Technische Universität Darmstadt; Alarich-Weiss-Str. 4 D-64287 Darmstadt Germany
| | - Matthias Rehahn
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie; Technische Universität Darmstadt; Alarich-Weiss-Str. 4 D-64287 Darmstadt Germany
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22
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Wang Z, Wang X, Sun H, Zhu Z, Zhang G, Zhang W, Gao Z. Triazine-Triazole Conjugates as Potent Ligands for Cu-Catalyzed Sonogashira Reaction. ChemistrySelect 2016. [DOI: 10.1002/slct.201600113] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Zhenhua Wang
- Key Laboratory of Applied Surface and Colloid Chemistry; MOE, School of Chemistry and Chemical Engineering; Shaanxi Normal University Xi'an; 710062 China
| | - Xiu Wang
- Key Laboratory of Applied Surface and Colloid Chemistry; MOE, School of Chemistry and Chemical Engineering; Shaanxi Normal University Xi'an; 710062 China
| | - Huaming Sun
- Key Laboratory of Applied Surface and Colloid Chemistry; MOE, School of Chemistry and Chemical Engineering; Shaanxi Normal University Xi'an; 710062 China
| | - Zhuangli Zhu
- Key Laboratory of Applied Surface and Colloid Chemistry; MOE, School of Chemistry and Chemical Engineering; Shaanxi Normal University Xi'an; 710062 China
| | - Guofang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry; MOE, School of Chemistry and Chemical Engineering; Shaanxi Normal University Xi'an; 710062 China
| | - Weiqiang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry; MOE, School of Chemistry and Chemical Engineering; Shaanxi Normal University Xi'an; 710062 China
| | - Ziwei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry; MOE, School of Chemistry and Chemical Engineering; Shaanxi Normal University Xi'an; 710062 China
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23
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Huang H, Karlsson C, Strømme M, Sjödin M, Gogoll A. Hydroquinone-pyrrole dyads with varied linkers. Beilstein J Org Chem 2016; 12:89-96. [PMID: 26877811 PMCID: PMC4734300 DOI: 10.3762/bjoc.12.10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 12/29/2015] [Indexed: 11/27/2022] Open
Abstract
A series of pyrroles functionalized in the 3-position with p-dimethoxybenzene via various linkers (CH2, CH2CH2, CH=CH, C≡C) has been synthesized. Their electronic properties have been deduced from 1H NMR, 13C NMR, and UV–vis spectra to detect possible interactions between the two aromatic subunits. The extent of conjugation between the subunits is largely controlled by the nature of the linker, with the largest conjugation found with the trans-ethene linker and the weakest with the aliphatic linkers. DFT calculations revealed substantial changes in the HOMO–LUMO gap that correlated with the extent of conjugation found experimentally. The results of this work are expected to open up for use of the investigated compounds as components of redox-active materials in sustainable, organic electrical energy storage devices.
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Affiliation(s)
- Hao Huang
- Nanotechnology and Functional Materials, Department of Engineering Sciences, The Ångström Laboratory, Uppsala University, Box 534, SE-751 21 Uppsala, Sweden
| | - Christoffer Karlsson
- Nanotechnology and Functional Materials, Department of Engineering Sciences, The Ångström Laboratory, Uppsala University, Box 534, SE-751 21 Uppsala, Sweden
| | - Maria Strømme
- Nanotechnology and Functional Materials, Department of Engineering Sciences, The Ångström Laboratory, Uppsala University, Box 534, SE-751 21 Uppsala, Sweden
| | - Martin Sjödin
- Nanotechnology and Functional Materials, Department of Engineering Sciences, The Ångström Laboratory, Uppsala University, Box 534, SE-751 21 Uppsala, Sweden
| | - Adolf Gogoll
- Department of Chemistry - BMC, Biomedical Centre, Uppsala University, Box 576, SE-751 23 Uppsala, Sweden
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24
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Marulasiddeshwara M, Kumar PR. Synthesis of Pd(0) nanocatalyst using lignin in water for the Mizoroki–Heck reaction under solvent-free conditions. Int J Biol Macromol 2016; 83:326-34. [DOI: 10.1016/j.ijbiomac.2015.11.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 10/31/2015] [Accepted: 11/12/2015] [Indexed: 11/30/2022]
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25
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Magnano G, Marinotto D, Cipolla MP, Trifiletti V, Listorti A, Mussini PR, Di Carlo G, Tessore F, Manca M, Orbelli Biroli A, Pizzotti M. Influence of alkoxy chain envelopes on the interfacial photoinduced processes in tetraarylporphyrin-sensitized solar cells. Phys Chem Chem Phys 2016; 18:9577-85. [DOI: 10.1039/c6cp00129g] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We have investigated the effect of the alkoxy chain length and nature on the reduction of dye-to-dye aggregation as well as on the enhancement of light harvesting capabilities.
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26
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Munoz SB, Aloia AN, Moore AK, Papp A, Mathew T, Fustero S, Olah GA, Surya Prakash GK. Synthesis of 3-substituted isoindolin-1-ones via a tandem desilylation, cross-coupling, hydroamidation sequence under aqueous phase-transfer conditions. Org Biomol Chem 2016; 14:85-92. [DOI: 10.1039/c5ob02187a] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Reports the synthesis of 3-methylene-isoindolin-1-ones 4 under aqueous phase-transfer conditions.
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Affiliation(s)
- Socrates B. Munoz
- Loker Hydrocarbon Research Institute and Department of Chemistry
- University of Southern California
- Los Angeles
- USA
| | - Alexandra N. Aloia
- Loker Hydrocarbon Research Institute and Department of Chemistry
- University of Southern California
- Los Angeles
- USA
| | - Alexander K. Moore
- Loker Hydrocarbon Research Institute and Department of Chemistry
- University of Southern California
- Los Angeles
- USA
| | - Attila Papp
- Loker Hydrocarbon Research Institute and Department of Chemistry
- University of Southern California
- Los Angeles
- USA
| | - Thomas Mathew
- Loker Hydrocarbon Research Institute and Department of Chemistry
- University of Southern California
- Los Angeles
- USA
| | - Santos Fustero
- Departamento de Quimica Organica
- Universidad de Valencia and Laboratorio de Moleculas Organicas
- E-46012 Valencia
- Spain
| | - George A. Olah
- Loker Hydrocarbon Research Institute and Department of Chemistry
- University of Southern California
- Los Angeles
- USA
| | - G. K. Surya Prakash
- Loker Hydrocarbon Research Institute and Department of Chemistry
- University of Southern California
- Los Angeles
- USA
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27
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Blom M, Norrehed S, Andersson CH, Huang H, Light ME, Bergquist J, Grennberg H, Gogoll A. Synthesis and Properties of Bis-Porphyrin Molecular Tweezers: Effects of Spacer Flexibility on Binding and Supramolecular Chirogenesis. Molecules 2015; 21:E16. [PMID: 26703562 PMCID: PMC6274253 DOI: 10.3390/molecules21010016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Revised: 11/21/2015] [Accepted: 12/07/2015] [Indexed: 11/23/2022] Open
Abstract
Ditopic binding of various dinitrogen compounds to three bisporphyrin molecular tweezers with spacers of varying conformational rigidity, incorporating the planar enediyne (1), the helical stiff stilbene (2), or the semi-rigid glycoluril motif fused to the porphyrins (3), are compared. Binding constants Ka = 104–106 M−1 reveal subtle differences between these tweezers, that are discussed in terms of porphyrin dislocation modes. Exciton coupled circular dichroism (ECCD) of complexes with chiral dinitrogen guests provides experimental evidence for the conformational properties of the tweezers. The results are further supported and rationalized by conformational analysis.
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Affiliation(s)
- Magnus Blom
- Department of Chemistry-BMC, Uppsala University, Uppsala S-75123, Sweden.
| | - Sara Norrehed
- Department of Chemistry-BMC, Uppsala University, Uppsala S-75123, Sweden.
| | | | - Hao Huang
- Department of Chemistry-BMC, Uppsala University, Uppsala S-75123, Sweden.
| | - Mark E Light
- Department of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, UK.
| | - Jonas Bergquist
- Department of Chemistry-BMC, Uppsala University, Uppsala S-75123, Sweden.
| | - Helena Grennberg
- Department of Chemistry-BMC, Uppsala University, Uppsala S-75123, Sweden.
| | - Adolf Gogoll
- Department of Chemistry-BMC, Uppsala University, Uppsala S-75123, Sweden.
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28
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Sun J, Lin C, Qin X, Dong X, Tu Z, Tang F, Chen C, Zhang J. Synthesis and biological evaluation of 3,5-disubstituted-4-alkynylisoxozales as a novel class of HSP90 inhibitors. Bioorg Med Chem Lett 2015; 25:3129-34. [DOI: 10.1016/j.bmcl.2015.06.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 05/21/2015] [Accepted: 06/01/2015] [Indexed: 12/23/2022]
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29
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Short microwave-assisted modular synthesis of naturally occurring oxygenated bibenzyls. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2015. [DOI: 10.1515/znb-2015-0047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The naturally occurring oxygenated bibenzyls lunularin and m-O-methyllunularin were prepared in a modular synthesis in four steps from two appropriate iodophenols and trimethylsilylacetylene utilizing microwave-assisted Sonogashira couplings as the crucial steps. The antimicrobial activity of the resulting natural products was evaluated in an agar diffusion assay.
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30
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Khazaei A, Khazaei M, Rahmati S. A green method for the synthesis of gelatin/pectin stabilized palladium nano-particles as efficient heterogeneous catalyst for solvent-free Mizoroki–Heck reaction. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2014.12.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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31
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Otero Y, Vera W, León Y, Cardozo C, Peña D, Arce A, De Sanctis Y, Gonzalez T. Synthesis, Crystal Structures and Properties of 1,8-Di(Quinol-2-yl)Octa-1,7-Diyne and 1,8-di(Phenantren-9-yl)Octa-1,7-Diyne. JOURNAL OF CHEMICAL RESEARCH 2015. [DOI: 10.3184/174751915x14198590417182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
1,8-Di(quinol-2-yl)octa-1,7-diyne and 1,8-di(phenanthren-9-yl)octa-1,7-diyne were synthesised by conventional and microwave-assisted methods in good yields. Microwave irradiation enhances the rate of these reactions. Photophysical properties of these derivatives were also evaluated, and it was found that 1,8-di(phenanthren-9-yl)octa-1,7-diyne displays a higher fluorescence quantum yield than 1,8-di(quinol-2-yl)octa-1,7-diyne. The molecular structures of 1,8-di(quinol-2-yl)octa-1,7-diyne and 1,8-di(phenanthren-9-yl)octa-1,7-diyne were established by single-crystal X-ray diffraction studies.
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Affiliation(s)
- Yomaira Otero
- Instituto Venezolano de Investigaciones Científicas (IVIC), Centro de Química, Apartado 21827, Caracas 1020–A, Venezuela
| | - William Vera
- Instituto Venezolano de Investigaciones Científicas (IVIC), Centro de Química, Apartado 21827, Caracas 1020–A, Venezuela
| | - Yokoy León
- Instituto Venezolano de Investigaciones Científicas (IVIC), Centro de Química, Apartado 21827, Caracas 1020–A, Venezuela
| | - Claudia Cardozo
- Instituto Venezolano de Investigaciones Científicas (IVIC), Centro de Química, Apartado 21827, Caracas 1020–A, Venezuela
| | - Deisy Peña
- Instituto Venezolano de Investigaciones Científicas (IVIC), Centro de Química, Apartado 21827, Caracas 1020–A, Venezuela
| | - Alejandro Arce
- Instituto Venezolano de Investigaciones Científicas (IVIC), Centro de Química, Apartado 21827, Caracas 1020–A, Venezuela
| | - Ysaura De Sanctis
- Instituto Venezolano de Investigaciones Científicas (IVIC), Centro de Química, Apartado 21827, Caracas 1020–A, Venezuela
| | - Teresa Gonzalez
- Instituto Venezolano de Investigaciones Científicas (IVIC), Centro de Química, Apartado 21827, Caracas 1020–A, Venezuela
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32
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Landarani Isfahani A, Mohammadpoor-Baltork I, Mirkhani V, Khosropour AR, Moghadam M, Tangestaninejad S. Pd Nanoparticles Immobilized on Nanosilica Triazine Dendritic Polymer: A Reusable Catalyst for the Synthesis of Mono-, Di-, and Trialkynylaromatics by Sonogashira Cross-Coupling in Water. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402503] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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33
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Kownacki I, Orwat B, Marciniec B. Iridium-Promoted Conversion of Chlorosilanes to Alkynyl Derivatives in a One-Pot Reaction Sequence. Organometallics 2014. [DOI: 10.1021/om500320t] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ireneusz Kownacki
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
| | - Bartosz Orwat
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
| | - Bogdan Marciniec
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
- Center of Advanced Technology, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland
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34
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Large accelerations from small thermal differences: case studies and conventional reproduction of microwave effects on palladium couplings. REACTION KINETICS MECHANISMS AND CATALYSIS 2014. [DOI: 10.1007/s11144-014-0733-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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35
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Steffen A, Ward RM, Tay MG, Edkins RM, Seeler F, van Leeuwen M, Pålsson LO, Beeby A, Batsanov AS, Howard JAK, Marder TB. Regiospecific Formation and Unusual Optical Properties of 2,5-Bis(arylethynyl)rhodacyclopentadienes: A New Class of Luminescent Organometallics. Chemistry 2014; 20:3652-66. [DOI: 10.1002/chem.201304068] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Indexed: 11/11/2022]
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36
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Kownacki I, Orwat B, Marciniec B, Kownacka A. A new and efficient route for the synthesis of alkynyl functionalized silicon derivatives. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.11.103] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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37
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Rossi R, Bellina F, Lessi M, Manzini C. Development and applications of highly selective palladium-catalyzed monocoupling reactions of (cyclo)alkenes and 1,3-alkadienes bearing two or three electrophilic sites and bis(enol triflates) with terminal alkynes. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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38
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Di Carlo G, Orbelli Biroli A, Pizzotti M, Tessore F, Trifiletti V, Ruffo R, Abbotto A, Amat A, De Angelis F, Mussini PR. Tetraaryl ZnIIPorphyrinates Substituted at β-Pyrrolic Positions as Sensitizers in Dye-Sensitized Solar Cells: A Comparison withmeso-Disubstituted Push-Pull ZnIIPorphyrinates. Chemistry 2013; 19:10723-40. [DOI: 10.1002/chem.201300219] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 05/03/2013] [Indexed: 11/11/2022]
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39
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Affiliation(s)
- Mukesh C. Joshi
- a Department of Chemistry , University of Delhi , Delhi , India
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40
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A green approach for the synthesis of palladium nanoparticles supported on pectin: Application as a catalyst for solvent-free Mizoroki–Heck reaction. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcata.2013.02.023] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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41
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Synthesis and biological evaluation of novel substituted pyrrolo[1,2-a]quinoxaline derivatives as inhibitors of the human protein kinase CK2. Eur J Med Chem 2013; 65:205-22. [PMID: 23711832 DOI: 10.1016/j.ejmech.2013.04.051] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Revised: 04/22/2013] [Accepted: 04/25/2013] [Indexed: 10/26/2022]
Abstract
Herein we describe the synthesis and properties of substituted phenylaminopyrrolo[1,2-a]quinoxaline-carboxylic acid derivatives as a novel class of potent inhibitors of the human protein kinase CK2. A set of 15 compounds was designed and synthesized using convenient and straightforward synthesis protocols. The compounds were tested for inhibition of human protein kinase CK2, which is a potential drug target for many diseases including inflammatory disorders and cancer. New inhibitors with IC50 in the micro- and sub-micromolar range were identified. The most promising compound, the 4-[(3-chlorophenyl)amino]pyrrolo[1,2-a]quinoxaline-3-carboxylic acid 1c inhibited human CK2 with an IC50 of 49 nM. Our findings indicate that pyrrolo[1,2-a]quinoxalines are a promising starting scaffold for further development and optimization of human protein kinase CK2 inhibitors.
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42
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Chang W, Shin J, Chae G, Jang SR, Ahn BJ. Microwave-assisted Sonogashira cross-coupling reaction catalyzed by Pd-MCM-41 under solvent-free conditions. J IND ENG CHEM 2013. [DOI: 10.1016/j.jiec.2012.11.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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43
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Johansson JR, Wang Y, Eng MP, Kann N, Lincoln P, Andersson J. Bridging ligand length controls at selectivity and enantioselectivity of binuclear ruthenium threading intercalators. Chemistry 2013; 19:6246-56. [PMID: 23576496 DOI: 10.1002/chem.201300483] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Indexed: 11/09/2022]
Abstract
The slow dissociation of DNA threading intercalators makes them interesting as model compounds in the search for new DNA targeting drugs, as there appears to be a correlation between slow dissociation and biological activity. Thus, it would be of great value to understand the mechanisms controlling threading intercalation, and for this purpose we have investigated how the length of the bridging ligand of binuclear ruthenium threading intercalators affects their DNA binding properties. We have synthesised a new binuclear ruthenium threading intercalator with slower dissociation kinetics from ct-DNA than has ever been observed for any ruthenium complex with any type of DNA, a property that we attribute to the increased distance between the ruthenium centres of the new complex. By comparison with previously studied ruthenium complexes, we further conclude that elongation of the bridging ligand reduces the sensitivity of the threading interaction to DNA flexibility, resulting in a decreased AT selectivity for the new complex. We also find that the length of the bridging ligand affects the enantioselectivity with increasing preference for the ΔΔ enantiomer as the bridging ligand becomes longer.
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Affiliation(s)
- Johan R Johansson
- Department of Chemical and Biological Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
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44
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Seidel N, Hahn T, Liebing S, Seichter W, Kortus J, Weber E. Synthesis and properties of new 9,10-anthraquinone derived compounds for molecular electronics. NEW J CHEM 2013. [DOI: 10.1039/c2nj40772h] [Citation(s) in RCA: 25] [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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45
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Nishihara Y, Inoue E, Noyori S, Ogawa D, Okada Y, Iwasaki M, Takagi K. Synthesis of unsymmetrically disubstituted ethynes by the palladium/copper(I)-cocatalyzed sila-Sonogashira–Hagihara coupling reactions of alkynylsilanes with aryl iodides, bromides, and chlorides through a direct activation of a carbon–silicon bond. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.093] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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46
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Literature Survey Part A: Transition Metal-Catalyzed Reactions. MICROWAVES IN ORGANIC AND MEDICINAL CHEMISTRY 2012. [DOI: 10.1002/9783527647828.ch5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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47
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Carlsson ACC, Gräfenstein J, Budnjo A, Laurila JL, Bergquist J, Karim A, Kleinmaier R, Brath U, Erdélyi M. Symmetric Halogen Bonding Is Preferred in Solution. J Am Chem Soc 2012; 134:5706-15. [DOI: 10.1021/ja301341h] [Citation(s) in RCA: 135] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Anna-Carin C. Carlsson
- Department
of Chemistry and
Molecular Biology, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Jürgen Gräfenstein
- Department
of Chemistry and
Molecular Biology, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Adnan Budnjo
- Department
of Chemistry and
Molecular Biology, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Jesse L. Laurila
- Department
of Chemistry and
Molecular Biology, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Jonas Bergquist
- Analytical Chemistry, Department
of Chemistry - Biomedical Center, Uppsala University, SE-751 24, Uppsala, Sweden
| | - Alavi Karim
- Department
of Chemistry and
Molecular Biology, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Roland Kleinmaier
- Department
of Chemistry and
Molecular Biology, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Ulrika Brath
- Department
of Chemistry and
Molecular Biology, University of Gothenburg, SE-412 96 Gothenburg, Sweden
| | - Máté Erdélyi
- Department
of Chemistry and
Molecular Biology, University of Gothenburg, SE-412 96 Gothenburg, Sweden
- The Swedish NMR Centre, Medicinaregatan
5c, SE-413 90 Gothenburg, Sweden
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48
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Gising J, Nilsson MT, Odell LR, Yahiaoui S, Lindh M, Iyer H, Sinha AM, Srinivasa BR, Larhed M, Mowbray SL, Karlén A. Trisubstituted imidazoles as Mycobacterium tuberculosis glutamine synthetase inhibitors. J Med Chem 2012; 55:2894-8. [PMID: 22369127 PMCID: PMC3381009 DOI: 10.1021/jm201212h] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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Mycobacterium tuberculosis glutamine
synthetase (MtGS) is a promising target for antituberculosis
drug discovery. In a recent high-throughput screening study we identified
several classes of MtGS inhibitors targeting the
ATP-binding site. We now explore one of these classes, the 2-tert-butyl-4,5-diarylimidazoles, and present the design,
synthesis, and X-ray crystallographic studies leading to the identification
of MtGS inhibitors with submicromolar IC50 values and promising antituberculosis MIC values.
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Affiliation(s)
- Johan Gising
- Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry, BMC, Uppsala University, Box 574, SE-751 23 Uppsala, Sweden
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Hajipour AR, Rafiee F. Application of a dimeric ortho-palladated complex of tribenzylamine as an efficient catalyst in microwave-assisted Hiyama coupling reactions. Appl Organomet Chem 2012. [DOI: 10.1002/aoc.1863] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Fatemeh Rafiee
- Department of Chemistry; Isfahan University of Technology; Isfahan; 84156; Iran
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50
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Andersson CH, Nyholm L, Grennberg H. Synthesis and characterization of a ferrocene-linked bis-fullerene[60] dumbbell. Dalton Trans 2012; 41:2374-81. [DOI: 10.1039/c2dt12097f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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