101
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Yang B, Chansaenpak K, Wu H, Zhu L, Wang M, Li Z, Lu H. Silver-promoted (radio)fluorination of unsaturated carbamates via a radical process. Chem Commun (Camb) 2017; 53:3497-3500. [PMID: 28280814 DOI: 10.1039/c7cc01393k] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The intramolecular fluorocyclization of unsaturated carbamates is described here using a hypervalent iodine reagent in the presence of a silver catalyst. Both (hetero)aryl-substituted olefins and acrylamides can be utilized as effective substrates. Preliminary mechanistic investigations suggest that the reaction proceeds via a cyclization/1,2-(hetero)aryl migration/fluorination cascade involving an unusual radical process. Furthermore, starting from no-carrier-added [18F]TBAF, a simple one-pot, two-step cascade method was developed for the generation of 18F-labeled heterocycles with high radiochemical purity.
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Affiliation(s)
- Bin Yang
- Institute of Chemistry & BioMedical Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
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102
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Ilchenko NO, Hedberg M, Szabó KJ. Fluorinative ring-opening of cyclopropanes by hypervalent iodine reagents. An efficient method for 1,3-oxyfluorination and 1,3-difluorination. Chem Sci 2017; 8:1056-1061. [PMID: 28451244 PMCID: PMC5356504 DOI: 10.1039/c6sc03471c] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 09/15/2016] [Indexed: 12/20/2022] Open
Abstract
A new method is presented for 1,3-difluorination and 1,3-oxyfluorination reactions. The process is based on iodonium mediated opening of 1,1-disubstituted cyclopropanes. The reaction proceeds with high chemo- and regioselectivity under mild reaction conditions typically at room temperature in a couple of hours. The reaction probably occurs via electrophilic ring-opening of cyclopropanes.
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Affiliation(s)
- Nadia O Ilchenko
- Stockholm University , Arrhenius Laboratory , Department of Organic Chemistry , SE-106 91 Stockholm , Sweden .
| | - Martin Hedberg
- Stockholm University , Arrhenius Laboratory , Department of Organic Chemistry , SE-106 91 Stockholm , Sweden .
| | - Kálmán J Szabó
- Stockholm University , Arrhenius Laboratory , Department of Organic Chemistry , SE-106 91 Stockholm , Sweden .
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103
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Zischler J, Kolks N, Modemann D, Neumaier B, Zlatopolskiy BD. Alcohol-Enhanced Cu-Mediated Radiofluorination. Chemistry 2017; 23:3251-3256. [DOI: 10.1002/chem.201604633] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Indexed: 02/01/2023]
Affiliation(s)
- Johannes Zischler
- Institute of Neuroscience and Medicine, INM-5: Nuclear Chemistry; Forschungszentrum Jülich GmbH; 52425 Jülich Germany
- Institute of Radiochemistry and Experimental Molecular Imaging; University Clinic Cologne; Kerpener Str. 62 50937 Cologne Germany
- Max Planck Institute for Metabolism Research; Gleueler Str. 50 50931 Cologne Germany
| | - Niklas Kolks
- Institute of Radiochemistry and Experimental Molecular Imaging; University Clinic Cologne; Kerpener Str. 62 50937 Cologne Germany
| | - Daniel Modemann
- Institute of Neuroscience and Medicine, INM-5: Nuclear Chemistry; Forschungszentrum Jülich GmbH; 52425 Jülich Germany
| | - Bernd Neumaier
- Institute of Neuroscience and Medicine, INM-5: Nuclear Chemistry; Forschungszentrum Jülich GmbH; 52425 Jülich Germany
- Institute of Radiochemistry and Experimental Molecular Imaging; University Clinic Cologne; Kerpener Str. 62 50937 Cologne Germany
- Max Planck Institute for Metabolism Research; Gleueler Str. 50 50931 Cologne Germany
| | - Boris D. Zlatopolskiy
- Institute of Radiochemistry and Experimental Molecular Imaging; University Clinic Cologne; Kerpener Str. 62 50937 Cologne Germany
- Max Planck Institute for Metabolism Research; Gleueler Str. 50 50931 Cologne Germany
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104
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Khotavivattana T, Calderwood S, Verhoog S, Pfeifer L, Preshlock S, Vasdev N, Collier TL, Gouverneur V. Synthesis and Reactivity of 18F-Labeled α,α-Difluoro-α-(aryloxy)acetic Acids. Org Lett 2017; 19:568-571. [DOI: 10.1021/acs.orglett.6b03730] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Samuel Calderwood
- Chemistry
Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Stefan Verhoog
- Chemistry
Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Lukas Pfeifer
- Chemistry
Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Sean Preshlock
- Chemistry
Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Neil Vasdev
- Division
of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital, 55 Fruit Street, Boston 02114, United States
- Department
of Radiology, Harvard Medical School, 55 Fruit Street, Boston 02114, United States
| | - Thomas L. Collier
- Division
of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital, 55 Fruit Street, Boston 02114, United States
- Department
of Radiology, Harvard Medical School, 55 Fruit Street, Boston 02114, United States
- Advion BioSystems, 10
Brown Road, Suite 101, Ithaca, New York 14850, United States
| | - Véronique Gouverneur
- Chemistry
Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
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105
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Kee JW, Shao H, Kee CW, Lu Y, Soo HS, Tan CH. Mechanistic insights for the photoredox organocatalytic fluorination of aliphatic carbons by anthraquinone using time-resolved and DFT studies. Catal Sci Technol 2017. [DOI: 10.1039/c6cy02484j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Nanosecond TAS and DFT calculations reveal mechanistic insights for photoredox fluorination of aliphatic C–H bonds and evidence of an anthraquinone–Selectfluor® exciplex.
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Affiliation(s)
- J. W. Kee
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- 21 Nanyang Link
- Nanyang Technological University
- 637371 Singapore
| | - H. Shao
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- 21 Nanyang Link
- Nanyang Technological University
- 637371 Singapore
| | - C. W. Kee
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- 21 Nanyang Link
- Nanyang Technological University
- 637371 Singapore
| | - Y. Lu
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- 21 Nanyang Link
- Nanyang Technological University
- 637371 Singapore
| | - H. S. Soo
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- 21 Nanyang Link
- Nanyang Technological University
- 637371 Singapore
| | - C.-H. Tan
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- 21 Nanyang Link
- Nanyang Technological University
- 637371 Singapore
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106
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Carbonnel E, Besset T, Poisson T, Labar D, Pannecoucke X, Jubault P. 18F-Fluoroform: a 18F-trifluoromethylating agent for the synthesis of SCF218F-aromatic derivatives. Chem Commun (Camb) 2017; 53:5706-5709. [DOI: 10.1039/c7cc02652h] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A new protocol for the synthesis of SCF218F-aromatic derivatives from 18F-fluoroform is described.
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Affiliation(s)
| | - Tatiana Besset
- Normandie Univ
- COBRA
- UMR 6014 et FR 3038
- Univ. Rouen
- INSA Rouen
| | - Thomas Poisson
- Normandie Univ
- COBRA
- UMR 6014 et FR 3038
- Univ. Rouen
- INSA Rouen
| | - Daniel Labar
- Pole of Molecular Imaging
- Radiotherapy and Oncology (MIRO) Institute of Experimental and Clinical Research (IREC) Université Catholique de Louvain
- 1200-Brussels
- Belgium
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107
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Campbell MG, Mercier J, Genicot C, Gouverneur V, Hooker JM, Ritter T. Bridging the gaps in 18F PET tracer development. Nat Chem 2016; 9:1-3. [PMID: 27995923 DOI: 10.1038/nchem.2693] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Michael G Campbell
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
- Department of Chemistry, Barnard College, 3009 Broadway, New York, New York 10027, USA
| | - Joel Mercier
- Global Chemistry, UCB NewMedicines, UCB Biopharma SPRL, 1420 Braine-l'Alleud, Belgium
| | - Christophe Genicot
- Global Chemistry, UCB NewMedicines, UCB Biopharma SPRL, 1420 Braine-l'Alleud, Belgium
| | - Véronique Gouverneur
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Jacob M Hooker
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts 02114, USA
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, Massachusetts 02129, USA
| | - Tobias Ritter
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts 02114, USA
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
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108
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Yuan G, Wang F, Stephenson NA, Wang L, Rotstein BH, Vasdev N, Tang P, Liang SH. Metal-free 18F-labeling of aryl-CF 2H via nucleophilic radiofluorination and oxidative C-H activation. Chem Commun (Camb) 2016; 53:126-129. [PMID: 27917423 PMCID: PMC5179041 DOI: 10.1039/c6cc07913j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A metal-free and selective method to form [18F]aryl-CF2H through nucleophilic radiofluorination of benzyl (pseudo)halides and oxidative C-H activation of benzylic C-H bonds has been developed. The method is operationally simple and tolerates a variety of electron-neutral/deficient arenes and heteroarenes.
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Affiliation(s)
- Gengyang Yuan
- Gordon Center for Medical Imaging & Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital and Department of Radiology, Harvard Medical School, 55 Fruit St., Boston, MA 02114, USA. and Department of Chemistry & Chemical Biology, Northeastern University, 360 Huntington Ave., Boston, MA 02115, USA
| | - Feng Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300071, China
| | - Nickeisha A Stephenson
- Gordon Center for Medical Imaging & Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital and Department of Radiology, Harvard Medical School, 55 Fruit St., Boston, MA 02114, USA.
| | - Lu Wang
- Gordon Center for Medical Imaging & Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital and Department of Radiology, Harvard Medical School, 55 Fruit St., Boston, MA 02114, USA.
| | - Benjamin H Rotstein
- Gordon Center for Medical Imaging & Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital and Department of Radiology, Harvard Medical School, 55 Fruit St., Boston, MA 02114, USA.
| | - Neil Vasdev
- Gordon Center for Medical Imaging & Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital and Department of Radiology, Harvard Medical School, 55 Fruit St., Boston, MA 02114, USA.
| | - Pingping Tang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300071, China
| | - Steven H Liang
- Gordon Center for Medical Imaging & Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital and Department of Radiology, Harvard Medical School, 55 Fruit St., Boston, MA 02114, USA.
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109
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Zhou B, Yan T, Xue XS, Cheng JP. Mechanism of Silver-Mediated Geminal Difluorination of Styrenes with a Fluoroiodane Reagent: Insights into Lewis-Acid-Activation Model. Org Lett 2016; 18:6128-6131. [PMID: 27934395 DOI: 10.1021/acs.orglett.6b03134] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Fluorination mediated by the cyclic hypervalent fluoroiodane reagent (1) often requires an exogenous Lewis acid. The widely accepted Lewis-acid-activation model is that a given Lewis acid binds to the oxygen atom of 1 (O-coordination) to polarize the I-O bond. Computational studies of silver-mediated geminal difluorination of styrenes with 1 reveal a new "F-coordination" model that is energetically much preferred over the commonly accepted "O-coordination" model. The calculations rationalize the regioselective formation of the geminal difluorination product.
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Affiliation(s)
| | | | | | - Jin-Pei Cheng
- Center of Basic Molecular Science, Department of Chemistry, Tsinghua University , Beijing 100084, China
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110
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Makaravage KJ, Brooks AF, Mossine AV, Sanford MS, Scott PJH. Copper-Mediated Radiofluorination of Arylstannanes with [ 18F]KF. Org Lett 2016; 18:5440-5443. [PMID: 27718581 PMCID: PMC5078836 DOI: 10.1021/acs.orglett.6b02911] [Citation(s) in RCA: 134] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
![]()
A copper-mediated nucleophilic radiofluorination
of aryl- and vinylstannanes
with [18F]KF is described. This method is fast, uses commercially
available reagents, and is compatible with both electron-rich and
electron-deficient arene substrates. This method has been applied
to the manual synthesis of a variety of clinically relevant radiotracers
including protected [18F]F-phenylalanine and [18F]F-DOPA. In addition, an automated synthesis of [18F]MPPF
is demonstrated that delivers a clinically validated dose of 200 ±
20 mCi with a high specific activity of 2400 ± 900 Ci/mmol.
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Affiliation(s)
| | - Allen F Brooks
- Department of Radiology, University of Michigan Medical School , 1301 Catherine Street, Ann Arbor, Michigan 48109, United States
| | - Andrew V Mossine
- Department of Radiology, University of Michigan Medical School , 1301 Catherine Street, Ann Arbor, Michigan 48109, United States
| | | | - Peter J H Scott
- Department of Radiology, University of Michigan Medical School , 1301 Catherine Street, Ann Arbor, Michigan 48109, United States
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111
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Yuan G, Jones GB, Vasdev N, Liang SH. Radiosynthesis and preliminary PET evaluation of (18)F-labeled 2-(1-(3-fluorophenyl)-2-oxo-5-(pyrimidin-2-yl)-1,2-dihydropyridin-3-yl)benzonitrile for imaging AMPA receptors. Bioorg Med Chem Lett 2016; 26:4857-4860. [PMID: 27546294 PMCID: PMC5018461 DOI: 10.1016/j.bmcl.2016.07.078] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 07/29/2016] [Indexed: 12/22/2022]
Abstract
To prompt the development of (18)F-labeled positron emission tomography (PET) tracers for the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor, we have prepared (18)F-labeled 2-(1-(3-fluorophenyl)-2-oxo-5-(pyrimidin-2-yl)-1,2-dihydropyridin-3-yl)benzonitrile ([(18)F]8). The radiosynthesis was achieved by a one-pot two-step method that utilized a spirocyclic hypervalent iodine(III) mediated radiofluorination to prepare the (18)F-labeled 1-bromo-3-fluorobenzene ([(18)F]15) intermediate with K(18)F. A subsequent copper(I) iodide mediated coupling reaction was carried out with 2-(2-oxo-5-(pyrimidin-2-yl)-1,2-dihydropyridin-3-yl)benzonitrile (10) to [(18)F]8 in 10±2% uncorrected radiochemical yield relative to starting (18)F-fluoride with >99% radiochemical purity and 29.6±7.4Gbq/μmol specific activity at the time of injection. PET imaging studies with the title radiotracer in normal mice demonstrated good brain uptake (peak standardized uptake value (SUV)=2.3±0.1) and warrants further in vivo validation.
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Affiliation(s)
- Gengyang Yuan
- Department of Chemistry & Chemical Biology, Northeastern University, 360 Huntington Ave., Boston, MA 02115, USA; Gordon Center for Medical Imaging & Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital and Department of Radiology, Harvard Medical School, 55 Fruit St., Boston, MA 02114, USA
| | - Graham B Jones
- Department of Chemistry & Chemical Biology, Northeastern University, 360 Huntington Ave., Boston, MA 02115, USA
| | - Neil Vasdev
- Gordon Center for Medical Imaging & Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital and Department of Radiology, Harvard Medical School, 55 Fruit St., Boston, MA 02114, USA.
| | - Steven H Liang
- Gordon Center for Medical Imaging & Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital and Department of Radiology, Harvard Medical School, 55 Fruit St., Boston, MA 02114, USA.
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112
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Competition of Nucleophilic Aromatic Substitution, σ-Bond Metathesis, and syn
Hydrometalation in Titanium(III)-Catalyzed Hydrodefluorination of Arenes. Chem Asian J 2016; 11:3062-3071. [DOI: 10.1002/asia.201601036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Indexed: 11/07/2022]
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113
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Yuan W, Szabó KJ. Rhodium-Catalyzed Oxy-Aminofluorination of Diazoketones with Tetrahydrofurans and N-Fluorobenzenesulfonimide. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01760] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Weiming Yuan
- Department
of Organic Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Kálmán J. Szabó
- Department
of Organic Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden
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114
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Gamache RF, Waldmann C, Murphy JM. Copper-Mediated Oxidative Fluorination of Aryl Stannanes with Fluoride. Org Lett 2016; 18:4522-5. [DOI: 10.1021/acs.orglett.6b02125] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Raymond F. Gamache
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095, United States
| | - Christopher Waldmann
- Department
of Molecular and Medical Pharmacology and Crump Institute for Molecular
Imaging, David Geffen School of Medicine, University of California, Los Angeles, 570 Westwood Plaza, Los
Angeles, California 90095, United States
| | - Jennifer M. Murphy
- Department
of Molecular and Medical Pharmacology and Crump Institute for Molecular
Imaging, David Geffen School of Medicine, University of California, Los Angeles, 570 Westwood Plaza, Los
Angeles, California 90095, United States
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115
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Shi H, Braun A, Wang L, Liang SH, Vasdev N, Ritter T. Synthesis of (18) F-Difluoromethylarenes from Aryl (Pseudo) Halides. Angew Chem Int Ed Engl 2016; 55:10786-90. [PMID: 27491349 PMCID: PMC5189681 DOI: 10.1002/anie.201604106] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 06/03/2016] [Indexed: 11/11/2022]
Abstract
A general method for the synthesis of [(18) F]difluoromethylarenes from [(18) F]fluoride for radiopharmaceutical discovery is reported. The method is practical, operationally simple, tolerates a wide scope of functional groups, and enables the labeling of a variety of arenes and heteroarenes with radiochemical yields (RCYs, not decay-corrected) from 10 to 60 %. The (18) F-fluorination precursors are readily prepared from aryl chlorides, bromides, iodides, and triflates. Seven (18) F-difluoromethylarene drug analogues and radiopharmaceuticals including Claritin, fluoxetine (Prozac), and [(18) F]DAA1106 were synthesized to show the potential of the method for applications in PET radiopharmaceutical design.
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Affiliation(s)
- Hang Shi
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, 02138, USA
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging, Massachusetts General Hospital, 55 Fruit Street, Boston, MA, 02114, USA
| | - Augustin Braun
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, 02138, USA
| | - Lu Wang
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging, Massachusetts General Hospital, 55 Fruit Street, Boston, MA, 02114, USA
| | - Steven H Liang
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging, Massachusetts General Hospital, 55 Fruit Street, Boston, MA, 02114, USA.
- Department of Radiology, Harvard Medical School, 55 Fruit Street, Boston, MA, 02114, USA.
| | - Neil Vasdev
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging, Massachusetts General Hospital, 55 Fruit Street, Boston, MA, 02114, USA.
- Department of Radiology, Harvard Medical School, 55 Fruit Street, Boston, MA, 02114, USA.
| | - Tobias Ritter
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, 02138, USA.
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging, Massachusetts General Hospital, 55 Fruit Street, Boston, MA, 02114, USA.
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany.
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116
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Shi H, Braun A, Wang L, Liang SH, Vasdev N, Ritter T. Synthesis of 18
F-Difluoromethylarenes from Aryl (Pseudo) Halides. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604106] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hang Shi
- Department of Chemistry and Chemical Biology; Harvard University; 12 Oxford Street Cambridge MA 02138 USA
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging; Massachusetts General Hospital; 55 Fruit Street Boston MA 02114 USA
| | - Augustin Braun
- Department of Chemistry and Chemical Biology; Harvard University; 12 Oxford Street Cambridge MA 02138 USA
| | - Lu Wang
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging; Massachusetts General Hospital; 55 Fruit Street Boston MA 02114 USA
| | - Steven H. Liang
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging; Massachusetts General Hospital; 55 Fruit Street Boston MA 02114 USA
- Department of Radiology; Harvard Medical School; 55 Fruit Street Boston MA 02114 USA
| | - Neil Vasdev
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging; Massachusetts General Hospital; 55 Fruit Street Boston MA 02114 USA
- Department of Radiology; Harvard Medical School; 55 Fruit Street Boston MA 02114 USA
| | - Tobias Ritter
- Department of Chemistry and Chemical Biology; Harvard University; 12 Oxford Street Cambridge MA 02138 USA
- Division of Nuclear Medicine and Molecular Imaging & Gordon Center for Medical Imaging; Massachusetts General Hospital; 55 Fruit Street Boston MA 02114 USA
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
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117
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Guérard F, Lee YS, Baidoo K, Gestin JF, Brechbiel MW. Unexpected Behavior of the Heaviest Halogen Astatine in the Nucleophilic Substitution of Aryliodonium Salts. Chemistry 2016; 22:12332-9. [PMID: 27305065 DOI: 10.1002/chem.201600922] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Indexed: 01/20/2023]
Abstract
Aryliodonium salts have become precursors of choice for the synthesis of (18) F-labeled tracers for nuclear imaging. However, little is known on the reactivity of these compounds with heavy halides, that is, radioiodide and astatide, at the radiotracer scale. In the first comparative study of radiohalogenation of aryliodonium salts with (125) I(-) and (211) At(-) , initial experiments on a model compound highlight the higher reactivity of astatide compared to iodide, which could not be anticipated from the trends previously observed within the halogen series. Kinetic studies indicate a significant difference in activation energy (Ea =23.5 and 17.1 kcal mol(-1) with (125) I(-) and (211) At(-) , respectively). Quantum chemical calculations suggest that astatination occurs via the monomeric form of an iodonium complex whereas iodination occurs via a heterodimeric iodonium intermediate. The good to excellent regioselectivity of halogenation and high yields achieved with diversely substituted aryliodonium salts indicate that this class of compounds is a promising alternative to the stannane chemistry currently used for heavy radiohalogen labeling of tracers in nuclear medicine.
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Affiliation(s)
- François Guérard
- Radioimmune & Inorganic Chemistry Section, Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, 20892, USA. .,Inserm U892, CNRS UMR6299, Université de Nantes, Nantes, France.
| | - Yong-Sok Lee
- Center for Molecular Modeling, Division of Computational Bioscience, Center for Information Technology, National Institutes of Health, Bethesda, Maryland, 20892, USA
| | - Kwamena Baidoo
- Radioimmune & Inorganic Chemistry Section, Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, 20892, USA
| | | | - Martin W Brechbiel
- Radioimmune & Inorganic Chemistry Section, Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, 20892, USA
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118
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Brugarolas P, Freifelder R, Cheng SH, DeJesus O. Synthesis of meta-substituted [(18)F]3-fluoro-4-aminopyridine via direct radiofluorination of pyridine N-oxides. Chem Commun (Camb) 2016; 52:7150-2. [PMID: 27216991 PMCID: PMC4950977 DOI: 10.1039/c6cc02362b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Due to their electron-rich aromatic structure, nucleophilic (radio)fluorination of pyridines is challenging, especially at the meta position. In this paper, we describe the first example of direct fluorination of a pyridine N-oxide to produce a meta fluorinated pyridine. Specifically, fluorination of 3-bromo-4-nitropyridine N-oxide produced in several minutes 3-fluoro-4-nitropyridine N-oxide in moderate yield at room temperature. This intermediate compound was later converted to 3-fluoro-4-aminopyridine easily by catalytic hydrogenation. Furthermore, this approach was successfully applied for labeling with fluorine-18. The use of pyridine N-oxides for the preparation of fluoropyridines is unprecedented in the chemical literature and has the potential to offer a new way for the synthesis of these important structures in pharmaceuticals and radiopharmaceuticals.
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Affiliation(s)
- P Brugarolas
- Department of Neurology, The University of Chicago, Chicago, IL 60637, USA.
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119
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Xue XS, Wang Y, Li M, Cheng JP. Comprehensive Energetic Scale for Quantitatively Estimating the Fluorinating Potential of N–F Reagents in Electrophilic Fluorinations. J Org Chem 2016; 81:4280-9. [DOI: 10.1021/acs.joc.6b00683] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Jin-Pei Cheng
- Center
of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing 100084, China
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120
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121
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Liu Y, Zhang K, Huang Y, Pan S, Liu XQ, Yang Y, Jiang Y, Xu XH. Synthesis of 3-fluoroalkenyl-3-trifluoromethyl-2-oxindoles by the reaction of indoline-2,3-diones with difluoromethylene phosphabetaine. Chem Commun (Camb) 2016; 52:5969-72. [PMID: 27056087 DOI: 10.1039/c6cc00666c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
An unprecedent reaction of indoline-2,3-diones and (triphenylphosphonio)difluoroacetate (PDFA) afforded novel 3-fluoroalkenyl-3-trifluoromethyl-2-oxindoles in moderate to excellent yields. These products could be transformed into other trifluoromethylated oxindole derivatives.
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Affiliation(s)
- Yingle Liu
- School of Chemistry and Pharmaceutical Engineering, Sichuan University of Science & Engineering, 180 Xueyuan Street, Huixing Lu, Zigong, Sichuan 643000, China.
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122
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He G, Qiu S, Huang H, Zhu G, Zhang D, Zhang R, Zhu H. Cu(I)- or Ag(I)-Catalyzed Regio- and Stereocontrolled trans-Hydrofluorination of Ynamides. Org Lett 2016; 18:1856-9. [DOI: 10.1021/acs.orglett.6b00615] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Guangke He
- Department of Applied Chemistry,
College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People’ s Republic of China
| | - Shineng Qiu
- Department of Applied Chemistry,
College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People’ s Republic of China
| | - Hai Huang
- Department of Applied Chemistry,
College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People’ s Republic of China
| | - Guohao Zhu
- Department of Applied Chemistry,
College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People’ s Republic of China
| | - Dongming Zhang
- Department of Applied Chemistry,
College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People’ s Republic of China
| | - Rong Zhang
- Department of Applied Chemistry,
College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People’ s Republic of China
| | - Hongjun Zhu
- Department of Applied Chemistry,
College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, People’ s Republic of China
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123
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Jadhav VH, Choi W, Lee SS, Lee S, Kim DW. Bis-tert
-Alcohol-Functionalized Crown-6-Calix[4]arene: An Organic Promoter for Nucleophilic Fluorination. Chemistry 2016; 22:4515-20. [DOI: 10.1002/chem.201504602] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Vinod H. Jadhav
- Department of Chemistry; Inha University; 100 Inha-ro, Nam-gu Incheon 402-751 Korea), Fax: (+82) 32-867-5604
| | - Wonsil Choi
- Department of Chemistry; Inha University; 100 Inha-ro, Nam-gu Incheon 402-751 Korea), Fax: (+82) 32-867-5604
| | - Sung-Sik Lee
- Department of Applied Chemistry; Kyung Hee University; Gyeonggi 446-701 Korea
| | - Sungyul Lee
- Department of Applied Chemistry; Kyung Hee University; Gyeonggi 446-701 Korea
| | - Dong Wook Kim
- Department of Chemistry; Inha University; 100 Inha-ro, Nam-gu Incheon 402-751 Korea), Fax: (+82) 32-867-5604
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124
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Preshlock S, Tredwell M, Gouverneur V. (18)F-Labeling of Arenes and Heteroarenes for Applications in Positron Emission Tomography. Chem Rev 2016; 116:719-66. [PMID: 26751274 DOI: 10.1021/acs.chemrev.5b00493] [Citation(s) in RCA: 477] [Impact Index Per Article: 59.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Diverse radiochemistry is an essential component of nuclear medicine; this includes imaging techniques such as positron emission tomography (PET). As such, PET can track diseases at an early stage of development, help patient care planning through personalized medicine and support drug discovery programs. Fluorine-18 is the most frequently used radioisotope in PET radiopharmaceuticals for both clinical and preclinical research. Its physical and nuclear characteristics (97% β(+) decay, 109.8 min half-life, 635 keV positron energy) and high specific activity make it an attractive nuclide for labeling and molecular imaging. Arenes and heteroarenes are privileged candidates for (18)F-incorporation as they are metabolically robust and therefore widely used by medicinal chemists and radiochemists alike. For many years, the range of (hetero)arenes amenable to (18)F-fluorination was limited by the lack of chemically diverse precursors, and of radiochemical methods allowing (18)F-incorporation in high selectivity and efficiency (radiochemical yield and purity, specific activity, and radio-scalability). The appearance of late-stage fluorination reactions catalyzed by transition metal or small organic molecules (organocatalysis) has encouraged much research on the use of these activation manifolds for (18)F-fluorination. In this piece, we review all of the reactions known to date to install the (18)F substituent and other key (18)F-motifs (e.g., CF3, CHF2, OCF3, SCF3, OCHF2) of medicinal relevance onto (hetero)arenes. The field has changed significantly in the past five years, and the current trend suggests that the radiochemical space available for PET applications will expand rapidly in the near future.
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Affiliation(s)
- Sean Preshlock
- Chemistry Research Laboratory, University of Oxford , Oxford OX1 3TA, United Kingdom
| | - Matthew Tredwell
- Chemistry Research Laboratory, University of Oxford , Oxford OX1 3TA, United Kingdom
| | - Véronique Gouverneur
- Chemistry Research Laboratory, University of Oxford , Oxford OX1 3TA, United Kingdom
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125
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Haskali MB, Telu S, Lee YS, Morse CL, Lu S, Pike VW. An Investigation of (Diacetoxyiodo)arenes as Precursors for Preparing No-Carrier-Added [(18)F]Fluoroarenes from Cyclotron-Produced [(18)F]Fluoride Ion. J Org Chem 2016; 81:297-302. [PMID: 26641128 PMCID: PMC5573187 DOI: 10.1021/acs.joc.5b02332] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Treatment of (diacetoxyiodo)arenes (1a-1u) with cyclotron-produced [(18)F]fluoride ion rapidly affords no-carrier-added [(18)F]fluoroarenes (2a-2u) in useful yields and constitutes a new method for converting substituted iodoarenes into substituted [(18)F]fluoroarenes in just two steps.
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Affiliation(s)
- Mohammad B Haskali
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health , Building 10, Room B3 C346A, 10 Center Drive, Bethesda, Maryland 20892-1003, United States
| | - Sanjay Telu
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health , Building 10, Room B3 C346A, 10 Center Drive, Bethesda, Maryland 20892-1003, United States
| | - Yong-Sok Lee
- Center for Molecular Modeling, Division of Computational Bioscience, Center for Information Technology, National Institutes of Health , Building 12A, Room 2049, 12 South Drive, Bethesda, Maryland 20892-5624, United States
| | - Cheryl L Morse
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health , Building 10, Room B3 C346A, 10 Center Drive, Bethesda, Maryland 20892-1003, United States
| | - Shuiyu Lu
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health , Building 10, Room B3 C346A, 10 Center Drive, Bethesda, Maryland 20892-1003, United States
| | - Victor W Pike
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health , Building 10, Room B3 C346A, 10 Center Drive, Bethesda, Maryland 20892-1003, United States
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126
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Krüger J, Ehm C, Lentz D. Improving selectivity in catalytic hydrodefluorination by limiting SNV reactivity. Dalton Trans 2016; 45:16789-16798. [DOI: 10.1039/c6dt02961b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Competition of HM, SBM and SNV in hydrodefluorination can lead to low selectivity which can be improved via solvent change.
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Affiliation(s)
- Juliane Krüger
- Institut für Chemie und Biochemie
- Anorganische Chemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Christian Ehm
- Dipartimento di Scienze Chimiche
- Università di Napoli Federico II
- 80126 Napoli
- Italy
| | - Dieter Lentz
- Institut für Chemie und Biochemie
- Anorganische Chemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
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127
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Pike VW. Considerations in the Development of Reversibly Binding PET Radioligands for Brain Imaging. Curr Med Chem 2016; 23:1818-69. [PMID: 27087244 PMCID: PMC5579844 DOI: 10.2174/0929867323666160418114826] [Citation(s) in RCA: 130] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 04/04/2016] [Accepted: 04/15/2016] [Indexed: 12/17/2022]
Abstract
The development of reversibly binding radioligands for imaging brain proteins in vivo, such as enzymes, neurotransmitter transporters, receptors and ion channels, with positron emission tomography (PET) is keenly sought for biomedical studies of neuropsychiatric disorders and for drug discovery and development, but is recognized as being highly challenging at the medicinal chemistry level. This article aims to compile and discuss the main considerations to be taken into account by chemists embarking on programs of radioligand development for PET imaging of brain protein targets.
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Affiliation(s)
- Victor W Pike
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health, Rm. B3C346A, 10 Center Drive, Bethesda, MD 20892, USA.
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128
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Ulmer A, Brunner C, Arnold AM, Pöthig A, Gulder T. A Fluorination/Aryl Migration/Cyclization Cascade for the Metal-Free Synthesis of Fluoro-Benzoxazepines. Chemistry 2015; 22:3660-4. [PMID: 26641801 DOI: 10.1002/chem.201504749] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Indexed: 11/09/2022]
Abstract
Fluorinated organic molecules are of high interest for many applications across chemical and medical disciplines. Efficient methods for the synthesis of such compounds are thus needed. Within this work, application of the bench-stable cyclic hypervalent iodine(III) fluoro reagent 1 facilitated the development of an efficient, metal-free method for the preparation of the novel class of 4-fluoro-1,3-benzoxazepines starting from readily available styrenes. The efficacy and broad applicability of this concept is demonstrated by the synthesis of 20 structurally diverse congeners in high yields, regio-, and diastereoselectivities. The presented method provides complementary chemoselectivity when compared to the common, commercially available electrophilic fluorination reagents, such as selectfluor. First mechanistic investigations with isotopically labeled substrates reveal a complex reaction mechanism, proceeding via an unusual fluorination/1,2-aryl migration/cyclization cascade.
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Affiliation(s)
- Anna Ulmer
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
| | - Christoph Brunner
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
| | - Andreas M Arnold
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
| | - Alexander Pöthig
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
| | - Tanja Gulder
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany.
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129
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Ilchenko NO, Cortés MA, Szabó KJ. Palladium-Catalyzed Iodofluorination of Alkenes Using Fluoro-Iodoxole Reagent. ACS Catal 2015. [DOI: 10.1021/acscatal.5b02022] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nadia O. Ilchenko
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Miguel A. Cortés
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Kálmán J. Szabó
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
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130
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Krapf P, Richarz R, Urusova EA, Neumaier B, Zlatopolskiy BD. Seyferth-Gilbert Homologation as a Route to18F-Labeled Building Blocks: Preparation of Radiofluorinated Phenylacetylenes and Their Application in PET Chemistry. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501377] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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131
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Pereira R, Wolstenhulme J, Sandford G, Claridge TDW, Gouverneur V, Cvengroš J. Synthesis and characterization of a novel N-F reagent derived from the ethano-Tröger's base: (1)J(FN) coupling constants as a signature for the N-F bond. Chem Commun (Camb) 2015; 52:1606-9. [PMID: 26658721 DOI: 10.1039/c5cc08375c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Methylation of 2,8-dimethyl-6H,12H-5,11-ethanodibenzo[b,f][1,5]-diazocine (ethano-Tröger's base) with methyl iodide followed by ion metathesis and fluorination with N-fluoro-2,3,4,5,6-pentachloropyridinium triflate affords a new electrophilic N-F reagent, that is more reactive than Selectfluor. 2D (19)F-(15)N HMQC experiments provide (1)JNF coupling constants which are diagnostic for the N-F functional group.
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Affiliation(s)
- Raul Pereira
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA Oxford, UK.
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132
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Buckingham F, Calderwood S, Checa B, Keller T, Tredwell M, Collier TL, Newington IM, Bhalla R, Glaser M, Gouverneur V. Oxidative fluorination of N-arylsulfonamides. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.07.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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133
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Mossine AV, Brooks AF, Makaravage KJ, Miller JM, Ichiishi N, Sanford MS, Scott PJH. Synthesis of [18F]Arenes via the Copper-Mediated [18F]Fluorination of Boronic Acids. Org Lett 2015; 17:5780-3. [PMID: 26568457 PMCID: PMC4672358 DOI: 10.1021/acs.orglett.5b02875] [Citation(s) in RCA: 179] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
A copper-mediated
radiofluorination of aryl- and vinylboronic acids
with K18F is described. This method exhibits high functional
group tolerance and is effective for the radiofluorination of a range
of electron-deficient, -neutral, and -rich aryl-, heteroaryl-, and
vinylboronic acids. This method has been applied to the synthesis
of [18F]FPEB, a PET radiotracer for quantifying metabotropic
glutamate 5 receptors.
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Affiliation(s)
- Andrew V Mossine
- Department of Radiology, University of Michigan Medical School , 1301 Catherine Street, Ann Arbor, Michigan 48109, United States
| | - Allen F Brooks
- Department of Radiology, University of Michigan Medical School , 1301 Catherine Street, Ann Arbor, Michigan 48109, United States
| | - Katarina J Makaravage
- Department of Chemistry, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Jason M Miller
- Department of Medicinal Chemistry, University of Michigan , 428 Church Street, Ann Arbor, Michigan 48109, United States
| | - Naoko Ichiishi
- Department of Chemistry, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Melanie S Sanford
- Department of Chemistry, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Peter J H Scott
- Department of Radiology, University of Michigan Medical School , 1301 Catherine Street, Ann Arbor, Michigan 48109, United States.,Department of Medicinal Chemistry, University of Michigan , 428 Church Street, Ann Arbor, Michigan 48109, United States
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134
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Niwa T, Ochiai H, Watanabe Y, Hosoya T. Ni/Cu-Catalyzed Defluoroborylation of Fluoroarenes for Diverse C–F Bond Functionalizations. J Am Chem Soc 2015; 137:14313-8. [DOI: 10.1021/jacs.5b10119] [Citation(s) in RCA: 153] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Takashi Niwa
- Chemical
Biology Team, Division of Bio-Function
Dynamics Imaging, RIKEN Center for Life Science Technologies, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Hidenori Ochiai
- Chemical
Biology Team, Division of Bio-Function
Dynamics Imaging, RIKEN Center for Life Science Technologies, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Yasuyoshi Watanabe
- Chemical
Biology Team, Division of Bio-Function
Dynamics Imaging, RIKEN Center for Life Science Technologies, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
| | - Takamitsu Hosoya
- Chemical
Biology Team, Division of Bio-Function
Dynamics Imaging, RIKEN Center for Life Science Technologies, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe 650-0047, Japan
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135
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136
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Affiliation(s)
- Mahmoud Elsabahy
- Department of Chemistry, Department of Chemical Engineering, Department of Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, United States
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut International Center of Nanomedicine, Al-Rajhy Liver Hospital, Assiut University, 71515 Assiut, Egypt, and Misr University for Science and Technology, 6 of October City, Egypt
| | - Gyu Seong Heo
- Department of Chemistry, Department of Chemical Engineering, Department of Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, United States
| | - Soon-Mi Lim
- Department of Chemistry, Department of Chemical Engineering, Department of Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, United States
| | - Guorong Sun
- Department of Chemistry, Department of Chemical Engineering, Department of Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, United States
| | - Karen L. Wooley
- Department of Chemistry, Department of Chemical Engineering, Department of Materials Science & Engineering, Laboratory for Synthetic-Biologic Interactions, Texas A&M University, P.O. Box 30012, 3255 TAMU, College Station, Texas 77842-3012, United States
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137
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138
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Zheng J, Wang L, Lin JH, Xiao JC, Liang SH. Difluorocarbene-Derived Trifluoromethylthiolation and [(18)F]Trifluoromethylthiolation of Aliphatic Electrophiles. Angew Chem Int Ed Engl 2015; 54:13236-40. [PMID: 26387796 DOI: 10.1002/anie.201505446] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2015] [Revised: 07/07/2015] [Indexed: 11/05/2022]
Abstract
The first trifluoromethylthiolation and [(18)F]trifluoromethylthiolation of alkyl electrophiles with in situ generated difluorocarbene in the presence of elemental sulfur and external (radioactive) fluoride ion is described. This transition-metal-free approach is high yielding, compatible with a variety of functional groups, and operated under mild reaction conditions. The conceptual advantage of this exogenous-fluoride-mediated transformation enables unprecedented syntheses of [(18)F]CF3S-labeled molecules from most commonly used [(18)F]fluoride ions. The rapid radiochemical reaction time (≤1 min) and high functional-group tolerance allow access to a variety of aliphatic [(18)F]CF3S compounds in high yields.
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Affiliation(s)
- Jian Zheng
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032 (China)
| | - Lu Wang
- Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital & Department of Radiology, Harvard Medical School, 55 Fruit St., White 427, Boston, MA (USA)
| | - Jin-Hong Lin
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032 (China)
| | - Ji-Chang Xiao
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032 (China).
| | - Steven H Liang
- Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital & Department of Radiology, Harvard Medical School, 55 Fruit St., White 427, Boston, MA (USA).
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139
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Zheng J, Wang L, Lin J, Xiao J, Liang SH. Difluorocarbene‐Derived Trifluoromethylthiolation and [
18
F]Trifluoromethylthiolation of Aliphatic Electrophiles. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505446] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jian Zheng
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032 (China)
| | - Lu Wang
- Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital & Department of Radiology, Harvard Medical School, 55 Fruit St., White 427, Boston, MA (USA)
| | - Jin‐Hong Lin
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032 (China)
| | - Ji‐Chang Xiao
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032 (China)
| | - Steven H. Liang
- Division of Nuclear Medicine and Molecular Imaging, Massachusetts General Hospital & Department of Radiology, Harvard Medical School, 55 Fruit St., White 427, Boston, MA (USA)
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140
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Buckingham F, Kirjavainen AK, Forsback S, Krzyczmonik A, Keller T, Newington IM, Glaser M, Luthra SK, Solin O, Gouverneur V. Organomediated Enantioselective (18)F Fluorination for PET Applications. Angew Chem Int Ed Engl 2015; 54:13366-9. [PMID: 26360631 DOI: 10.1002/anie.201506035] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 07/30/2015] [Indexed: 01/02/2023]
Abstract
The first organomediated asymmetric (18)F fluorination has been accomplished using a chiral imidazolidinone and [(18)F]N-fluorobenzenesulfonimide. The method provides access to enantioenriched (18)F-labeled α-fluoroaldehydes (>90% ee), which are versatile chiral (18)F synthons for the synthesis of radiotracers. The utility of this process is demonstrated with the synthesis of the PET (positron emission tomography) tracer (2S,4S)-4-[(18)F]fluoroglutamic acid.
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Affiliation(s)
- Faye Buckingham
- University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA (UK)
| | - Anna K Kirjavainen
- Turku PET Centre, Radiopharmaceutical Chemistry Laboratory, Kiinamyllynkatu 4-8, 20520 Turku (Finland)
| | - Sarita Forsback
- Turku PET Centre, Radiopharmaceutical Chemistry Laboratory, Kiinamyllynkatu 4-8, 20520 Turku (Finland)
| | - Anna Krzyczmonik
- Turku PET Centre, Radiopharmaceutical Chemistry Laboratory, Kiinamyllynkatu 4-8, 20520 Turku (Finland)
| | - Thomas Keller
- Turku PET Centre, Radiopharmaceutical Chemistry Laboratory, Kiinamyllynkatu 4-8, 20520 Turku (Finland)
| | - Ian M Newington
- GE Healthcare, The Grove Centre, White Lion Road, Amersham, HP7 9LL (UK)
| | - Matthias Glaser
- GE Healthcare, The Grove Centre, White Lion Road, Amersham, HP7 9LL (UK)
| | - Sajinder K Luthra
- GE Healthcare, The Grove Centre, White Lion Road, Amersham, HP7 9LL (UK)
| | - Olof Solin
- Turku PET Centre, Radiopharmaceutical Chemistry Laboratory, Kiinamyllynkatu 4-8, 20520 Turku (Finland)
| | - Véronique Gouverneur
- University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA (UK).
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141
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Buckingham F, Kirjavainen AK, Forsback S, Krzyczmonik A, Keller T, Newington IM, Glaser M, Luthra SK, Solin O, Gouverneur V. Organomediated Enantioselective
18
F Fluorination for PET Applications. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Faye Buckingham
- University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA (UK)
| | - Anna K. Kirjavainen
- Turku PET Centre, Radiopharmaceutical Chemistry Laboratory, Kiinamyllynkatu 4–8, 20520 Turku (Finland)
| | - Sarita Forsback
- Turku PET Centre, Radiopharmaceutical Chemistry Laboratory, Kiinamyllynkatu 4–8, 20520 Turku (Finland)
| | - Anna Krzyczmonik
- Turku PET Centre, Radiopharmaceutical Chemistry Laboratory, Kiinamyllynkatu 4–8, 20520 Turku (Finland)
| | - Thomas Keller
- Turku PET Centre, Radiopharmaceutical Chemistry Laboratory, Kiinamyllynkatu 4–8, 20520 Turku (Finland)
| | - Ian M. Newington
- GE Healthcare, The Grove Centre, White Lion Road, Amersham, HP7 9LL (UK)
| | - Matthias Glaser
- GE Healthcare, The Grove Centre, White Lion Road, Amersham, HP7 9LL (UK)
| | - Sajinder K. Luthra
- GE Healthcare, The Grove Centre, White Lion Road, Amersham, HP7 9LL (UK)
| | - Olof Solin
- Turku PET Centre, Radiopharmaceutical Chemistry Laboratory, Kiinamyllynkatu 4–8, 20520 Turku (Finland)
| | - Véronique Gouverneur
- University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA (UK)
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142
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Engle KM, Pfeifer L, Pidgeon GW, Giuffredi GT, Thompson AL, Paton RS, Brown JM, Gouverneur V. Coordination diversity in hydrogen-bonded homoleptic fluoride-alcohol complexes modulates reactivity. Chem Sci 2015; 6:5293-5302. [PMID: 29449931 PMCID: PMC5669313 DOI: 10.1039/c5sc01812a] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 06/22/2015] [Indexed: 11/21/2022] Open
Abstract
The nucleophilic reactivity of fluoride ion is altered in the presence of hydrogen-bond donors, including alcohols. Relatively little is known about the coordination involved; to rectify this, the X-ray structures of fourteen novel fluoride-alcohol complexes with tetrabutylammonium as the counterion have been determined. The coordination number varies from two to four depending on the steric bulk of the alcohol and is closely linked to trends in reactivity. This diversity in coordination stoichiometry is unprecedented but significant, as it implies differences in the ability of the fluoride-alcohol complexes to dissociate in solution with release of a more active and/or selective fluoride source.
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Affiliation(s)
- Keary M Engle
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
| | - Lukas Pfeifer
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
| | - George W Pidgeon
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
| | - Guy T Giuffredi
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
| | - Amber L Thompson
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
| | - Robert S Paton
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
| | - John M Brown
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
| | - Véronique Gouverneur
- Chemistry Research Laboratory , Department of Chemistry , Oxford University , OX1 3TA , UK .
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143
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Khotavivattana T, Verhoog S, Tredwell M, Pfeifer L, Calderwood S, Wheelhouse K, Lee Collier T, Gouverneur V. (18)F-Labeling of Aryl-SCF3, -OCF3 and -OCHF2 with [(18)F]Fluoride. Angew Chem Int Ed Engl 2015; 54:9991-5. [PMID: 26140357 DOI: 10.1002/anie.201504665] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Indexed: 12/13/2022]
Abstract
We report that halogenophilic silver(I) triflate permits halogen exchange (halex) nucleophilic (18)F-fluorination of aryl-OCHFCl, -OCF2Br and -SCF2Br precursors under mild conditions. This Ag(I)-mediated process allows for the first time access to a range of (18)F-labeled aryl-OCHF2, -OCF3 and -SCF3 derivatives, inclusive of [(18)F]riluzole. The (18)F-labeling of these medicinally important motifs expands the radiochemical space available for PET applications.
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Affiliation(s)
| | - Stefan Verhoog
- University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA (UK)
| | - Matthew Tredwell
- University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA (UK)
| | - Lukas Pfeifer
- University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA (UK)
| | - Samuel Calderwood
- University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA (UK)
| | - Katherine Wheelhouse
- Medicines Discovery & Development, GlaxoSmithKline R&D, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY (UK)
| | | | - Véronique Gouverneur
- University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA (UK).
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144
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Sander K, Galante E, Gendron T, Yiannaki E, Patel N, Kalber TL, Badar A, Robson M, Johnson SP, Bauer F, Mairinger S, Stanek J, Wanek T, Kuntner C, Kottke T, Weizel L, Dickens D, Erlandsson K, Hutton BF, Lythgoe MF, Stark H, Langer O, Koepp M, Årstad E. Development of Fluorine-18 Labeled Metabolically Activated Tracers for Imaging of Drug Efflux Transporters with Positron Emission Tomography. J Med Chem 2015; 58:6058-80. [PMID: 26161456 DOI: 10.1021/acs.jmedchem.5b00652] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Increased activity of efflux transporters, e.g., P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP), at the blood-brain barrier is a pathological hallmark of many neurological diseases, and the resulting multiple drug resistance represents a major clinical challenge. Noninvasive imaging of transporter activity can help to clarify the underlying mechanisms of drug resistance and facilitate diagnosis, patient stratification, and treatment monitoring. We have developed a metabolically activated radiotracer for functional imaging of P-gp/BCRP activity with positron emission tomography (PET). In preclinical studies, the tracer showed excellent initial brain uptake and clean conversion to the desired metabolite, although at a sluggish rate. Blocking with P-gp/BCRP modulators led to increased levels of brain radioactivity; however, dynamic PET did not show differential clearance rates between treatment and control groups. Our results provide proof-of-concept for development of prodrug tracers for imaging of P-gp/BCRP function in vivo but also highlight some challenges associated with this strategy.
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Affiliation(s)
- Kerstin Sander
- †Institute of Nuclear Medicine, University College London, 235 Euston Road, T5, London NW1 2BU, U.K
| | - Eva Galante
- †Institute of Nuclear Medicine, University College London, 235 Euston Road, T5, London NW1 2BU, U.K
| | - Thibault Gendron
- †Institute of Nuclear Medicine, University College London, 235 Euston Road, T5, London NW1 2BU, U.K
| | - Elena Yiannaki
- ‡Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
| | - Niral Patel
- §Centre for Advanced Biomedical Imaging, University College London, 72 Huntley Street, London WC1E 6DD, U.K
| | - Tammy L Kalber
- §Centre for Advanced Biomedical Imaging, University College London, 72 Huntley Street, London WC1E 6DD, U.K
| | - Adam Badar
- §Centre for Advanced Biomedical Imaging, University College London, 72 Huntley Street, London WC1E 6DD, U.K
| | - Mathew Robson
- ∥Cancer Institute, University College London, 72 Huntley Street, London WC1E 6DD, U.K
| | - Sean P Johnson
- ∥Cancer Institute, University College London, 72 Huntley Street, London WC1E 6DD, U.K
| | - Florian Bauer
- ⊥Department of Medicinal Chemistry, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria
| | - Severin Mairinger
- #Health and Environment Department, AIT Austrian Institute of Technology GmbH, A-2444 Seibersdorf, Austria
| | - Johann Stanek
- #Health and Environment Department, AIT Austrian Institute of Technology GmbH, A-2444 Seibersdorf, Austria
| | - Thomas Wanek
- #Health and Environment Department, AIT Austrian Institute of Technology GmbH, A-2444 Seibersdorf, Austria
| | - Claudia Kuntner
- #Health and Environment Department, AIT Austrian Institute of Technology GmbH, A-2444 Seibersdorf, Austria
| | - Tim Kottke
- ∇Institute of Pharmaceutical Chemistry, Biocenter, Johann Wolfgang Goethe University, Max-von-Laue-Strasse 9, 60438 Frankfurt am Main, Germany
| | - Lilia Weizel
- ∇Institute of Pharmaceutical Chemistry, Biocenter, Johann Wolfgang Goethe University, Max-von-Laue-Strasse 9, 60438 Frankfurt am Main, Germany
| | - David Dickens
- ○The Wolfson Centre for Personalised Medicine, Department of Molecular and Clinical Pharmacology, Institute of Translational Medicine, University of Liverpool, Block A Waterhouse Buildings, 1-5 Brownlow Street, Liverpool L69 3GL, U.K
| | - Kjell Erlandsson
- †Institute of Nuclear Medicine, University College London, 235 Euston Road, T5, London NW1 2BU, U.K
| | - Brian F Hutton
- †Institute of Nuclear Medicine, University College London, 235 Euston Road, T5, London NW1 2BU, U.K
| | - Mark F Lythgoe
- §Centre for Advanced Biomedical Imaging, University College London, 72 Huntley Street, London WC1E 6DD, U.K
| | - Holger Stark
- ∇Institute of Pharmaceutical Chemistry, Biocenter, Johann Wolfgang Goethe University, Max-von-Laue-Strasse 9, 60438 Frankfurt am Main, Germany
| | - Oliver Langer
- ●Department of Clinical Pharmacology, Medical University of Vienna, Waehringer-Guertel 18-20, A-1090 Vienna, Austria
| | - Matthias Koepp
- ◆Department of Clinical and Experimental Epilepsy, Institute of Neurology, University College London, Queen Square, London WC1N 3BG, U.K
| | - Erik Årstad
- †Institute of Nuclear Medicine, University College London, 235 Euston Road, T5, London NW1 2BU, U.K
- ‡Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, U.K
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145
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Hill DE, Holland JP. Computational studies on hypervalent iodonium(III) compounds as activated precursors for 18F radiofluorination of electron-rich arenes. COMPUT THEOR CHEM 2015. [DOI: 10.1016/j.comptc.2015.05.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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146
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Zhang K, Xu XH, Qing FL. Copper-Promoted Trifluoromethanesulfonylation and Trifluoromethylation of Arenediazonium Tetrafluoroborates with NaSO2CF3. J Org Chem 2015; 80:7658-65. [DOI: 10.1021/acs.joc.5b01295] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ke Zhang
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
| | - Xiu-Hua Xu
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Feng-Ling Qing
- College
of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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147
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Abstract
The role of fluorine in drug design and development is expanding rapidly as we learn more about the unique properties associated with this unusual element and how to deploy it with greater sophistication. The judicious introduction of fluorine into a molecule can productively influence conformation, pKa, intrinsic potency, membrane permeability, metabolic pathways, and pharmacokinetic properties. In addition, (18)F has been established as a useful positron emitting isotope for use with in vivo imaging technology that potentially has extensive application in drug discovery and development, often limited only by convenient synthetic accessibility to labeled compounds. The wide ranging applications of fluorine in drug design are providing a strong stimulus for the development of new synthetic methodologies that allow more facile access to a wide range of fluorinated compounds. In this review, we provide an update on the effects of the strategic incorporation of fluorine in drug molecules and applications in positron emission tomography.
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Affiliation(s)
- Eric P Gillis
- Department of Discovery Chemistry, Bristol-Myers Squibb Research and Development , 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Kyle J Eastman
- Department of Discovery Chemistry, Bristol-Myers Squibb Research and Development , 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Matthew D Hill
- Department of Discovery Chemistry, Bristol-Myers Squibb Research and Development , 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - David J Donnelly
- Discovery Chemistry Platforms, PET Radiochemical Synthesis, Bristol-Myers Squibb Research and Development , P.O. Box 4000, Princeton, New Jersey 08543, United States
| | - Nicholas A Meanwell
- Department of Discovery Chemistry, Bristol-Myers Squibb Research and Development , 5 Research Parkway, Wallingford, Connecticut 06492, United States
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148
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Yuan W, Szabó KJ. Catalytic Intramolecular Aminofluorination, Oxyfluorination, and Carbofluorination with a Stable and Versatile Hypervalent Fluoroiodine Reagent. Angew Chem Int Ed Engl 2015; 54:8533-7. [PMID: 26069071 PMCID: PMC4531827 DOI: 10.1002/anie.201503373] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Indexed: 02/04/2023]
Abstract
Application of a fluoroiodine analogue of the Togni reagent was studied in fluorocyclization reactions. In the presence of a transition-metal catalyst the applied fluoroiodine reagent can be used for aminofluorination, oxyfluorination, and carbofluorination reactions. The described procedure has a very broad synthetic scope for preparation of functionalized hetero- and isocyclic compounds having a tertiary fluorine substituent.
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Affiliation(s)
- Weiming Yuan
- Department of Organic Chemistry, Stockholm University (Sweden) http://www.organ.su.se/ks/
| | - Kálmán J Szabó
- Department of Organic Chemistry, Stockholm University (Sweden) http://www.organ.su.se/ks/.
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149
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Khotavivattana T, Verhoog S, Tredwell M, Pfeifer L, Calderwood S, Wheelhouse K, Lee Collier T, Gouverneur V. 18F-Labeling of Aryl-SCF3, -OCF3and -OCHF2with [18F]Fluoride. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504665] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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150
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Yuan W, Szabó KJ. Catalytic Intramolecular Aminofluorination, Oxyfluorination, and Carbofluorination with a Stable and Versatile Hypervalent Fluoroiodine Reagent. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503373] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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