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Hu B, Akula HK, Noh D, Mui YF, Slifstein M, Parsey R, Qu W. An improved synthesis of [ 18 F]VAT and its precursor. J Labelled Comp Radiopharm 2023; 66:384-392. [PMID: 37615234 PMCID: PMC10592132 DOI: 10.1002/jlcr.4059] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 08/25/2023]
Abstract
The vesicular acetylcholine transporter (VAChT) in the brain is an important presynaptic cholinergic biomarker, and neuroimaging studies of VAChT may provide in vivo information about psychiatric and neurologic conditions including Alzheimer's disease that are not accessible by other methods. The 18 F-labeled radiotracer, ((-)-(1-(-8-(2-[18 F]fluoroethoxy)-3-hydroxy-1,2,3,4-tetrahydronaphthalen-2-yl)piperidin-4-yl)(4-fluorophenyl)-methanone ([18 F]VAT, 1), was reported as a selective and high affinity ligand for the in vivo imaging of VAChT. The synthesis of [18 F]VAT has been reported in a two-step procedure with total 140 min, which includes preparation of 2-[18 F]fluoroethyltosylate and alkylation of benzovesamicol (-)-5 precursor with this radiosynthon using two different automated production modules consecutively. A multiple step synthetic route was employed for the synthesis of stereospecific precursor benzovesamicol (-)-5, which is difficult to be adapted for scale-up. To make the production of this tracer more amenable for clinical imaging, we present an improved total synthesis protocol to attain [18 F]VAT: (1) a tosylethoxy group being pre-installed tosylate precursor (-)-8 is synthesized to render a simple one-step radiofluorination under mild conditions; (2) The key optically active intermediate benzovesamicol (-)-5 was obtained via the regio- and enantio-enriched ring-opening amination of meso-epoxide 3 with 4-phenylpiperidine derivative 2 under catalysis of a chiral salenCo(III) catalyst 4b, which dramatically simplifies the synthetic route of the tosylate precursor (-)-8. [18 F]VAT 1 was prepared within ~65 min with desired chemical and radiochemical purities, via a fully automated procedure, using a commercial PET tracer production module. The final drug product was obtained as a sterile, pyrogen-free solution that conforms United States Pharmacopeia (USP) <823> requirements.
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Affiliation(s)
- Bao Hu
- Department of Psychiatry and Behavioral Health, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
- PET Research Core at Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
| | - Hari K. Akula
- Department of Psychiatry and Behavioral Health, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
- Department of Chemistry, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
- PET Research Core at Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
| | - Doyoung Noh
- Department of Psychiatry and Behavioral Health, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
- PET Research Core at Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
| | - Yiu Fung Mui
- Department of Psychiatry and Behavioral Health, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
- PET Research Core at Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
| | - Mark Slifstein
- Department of Psychiatry and Behavioral Health, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
- PET Research Core at Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
| | - Ramin Parsey
- Department of Psychiatry and Behavioral Health, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
- PET Research Core at Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
| | - Wenchao Qu
- Department of Psychiatry and Behavioral Health, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
- Department of Chemistry, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
- PET Research Core at Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
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Chaudhary P, Deepa, Meena DR, Aalam MJ, Yadav GD, Singh S. Cellulose sulfate: An efficient heterogeneous catalyst for the ring-opening of epoxides with alcohols and anilines. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1910304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | - Deepa
- Department of Chemistry, University of Delhi, Delhi, India
| | - Dhan Raj Meena
- Department of Chemistry, University of Delhi, Delhi, India
| | | | | | - Surendra Singh
- Department of Chemistry, University of Delhi, Delhi, India
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3
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Abdellah I, Martini C, Dos Santos A, Dragoe D, Guérineau V, Huc V, Schulz E. Calix[8]arene as New Platform for Cobalt-Salen Complexes Immobilization and Use in Hydrolytic Kinetic Resolution of Epoxides. ChemCatChem 2018. [DOI: 10.1002/cctc.201801164] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ibrahim Abdellah
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182; Université Paris-Sud, Université Paris-Saclay; Bâtiment 420 Orsay 91405 France
| | - Cyril Martini
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182; Université Paris-Sud, Université Paris-Saclay; Bâtiment 420 Orsay 91405 France
- Novecal; 8 rue Bastien Lepage 91140 Villebon sur Yvette France
| | - Amandine Dos Santos
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182; Université Paris-Sud, Université Paris-Saclay; Bâtiment 420 Orsay 91405 France
| | - Diana Dragoe
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182; Université Paris-Sud, Université Paris-Saclay; Bâtiment 420 Orsay 91405 France
| | - Vincent Guérineau
- Institut de Chimie des Substances Naturelles Centre de Recherche de Gif, CNRS; Université Paris-Saclay; 1, avenue de la Terrasse Gif-Sur-Yvette 91198 France
| | - Vincent Huc
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182; Université Paris-Sud, Université Paris-Saclay; Bâtiment 420 Orsay 91405 France
| | - Emmanuelle Schulz
- Institut de Chimie Moléculaire et des Matériaux d'Orsay CNRS UMR 8182; Université Paris-Sud, Université Paris-Saclay; Bâtiment 420 Orsay 91405 France
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Hatazawa M, Nakabayashi K, Ohkoshi SI, Nozaki K. In Situ Generation of CoIII-Salen Complexes for Copolymerization of Propylene Oxide and CO2. Chemistry 2016; 22:13677-81. [DOI: 10.1002/chem.201602546] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Masahiro Hatazawa
- Department of Chemistry and Biotechnology; Graduate School of Engineering; The University of Tokyo; 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan
| | - Koji Nakabayashi
- Department of Chemistry; School of Science; The University of Tokyo; 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Shin-ichi Ohkoshi
- Department of Chemistry; School of Science; The University of Tokyo; 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Kyoko Nozaki
- Department of Chemistry and Biotechnology; Graduate School of Engineering; The University of Tokyo; 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan
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Dai Z, Sun Q, Chen F, Pan S, Wang L, Meng X, Li J, Xiao FS. Enhancement of Catalytic Activity in Epoxide Hydration by Increasing the Concentration of Cobalt(III)/Salen in Porous Polymer Catalysts. ChemCatChem 2016. [DOI: 10.1002/cctc.201501222] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Zhifeng Dai
- Key Laboratory of Applied Chemistry of Zhejiang Province and Department of Chemistry; Zhejiang University, Hangzhou; Zhejiang 310028 P.R. China
| | - Qi Sun
- Key Laboratory of Applied Chemistry of Zhejiang Province and Department of Chemistry; Zhejiang University, Hangzhou; Zhejiang 310028 P.R. China
- Electron Microscopy Centre; Zhejiang University, Hangzhou; Zhejiang 310028 P.R. China
| | - Fang Chen
- Key Laboratory of Applied Chemistry of Zhejiang Province and Department of Chemistry; Zhejiang University, Hangzhou; Zhejiang 310028 P.R. China
| | - Shuxiang Pan
- Key Laboratory of Applied Chemistry of Zhejiang Province and Department of Chemistry; Zhejiang University, Hangzhou; Zhejiang 310028 P.R. China
| | - Liang Wang
- Key Laboratory of Applied Chemistry of Zhejiang Province and Department of Chemistry; Zhejiang University, Hangzhou; Zhejiang 310028 P.R. China
| | - Xiangju Meng
- Key Laboratory of Applied Chemistry of Zhejiang Province and Department of Chemistry; Zhejiang University, Hangzhou; Zhejiang 310028 P.R. China
| | - Jixue Li
- Electron Microscopy Centre; Zhejiang University, Hangzhou; Zhejiang 310028 P.R. China
| | - Feng-Shou Xiao
- Key Laboratory of Applied Chemistry of Zhejiang Province and Department of Chemistry; Zhejiang University, Hangzhou; Zhejiang 310028 P.R. China
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6
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Co(III) complexes of tetradentate X3L type ligands: Synthesis, electronic structure, and reactivity. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.01.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Voronova K, Homolya L, Udvardy A, Bényei AC, Joó F. Pd-tetrahydrosalan-type complexes as catalysts for sonogashira couplings in water: efficient greening of the procedure. CHEMSUSCHEM 2014; 7:2230-2239. [PMID: 24995656 DOI: 10.1002/cssc.201402147] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Indexed: 06/03/2023]
Abstract
New sulfonated tetrahydrosalen-type ligands and their water-soluble palladium(II) complexes have been synthesized. The palladium(II) complexes catalyze the Sonogashira coupling (23 examples) of various aryl halides (including chloroarenes) with terminal alkynes, with good to excellent conversions under mild conditions (80°C, air, no Cu(I) cocatalyst) in aqueous-organic mixtures and turnover frequencies of up to 2790 h(-1) . Under optimized reaction conditions to minimize environmental contamination, diphenylacetylenes can be isolated in 76-98% yield. The aqueous catalyst solution can be recycled four times with decreasing activity; however, yields between 93 and 98% can still be achieved with extended reaction times. Several water-insoluble products can be isolated in excellent yield by simple filtration and purification by washing with water; this method is used, for the first time, for this type of C-C coupling procedure.
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Affiliation(s)
- Krisztina Voronova
- Department of Physical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen (Hungary); Current address: Department of Chemistry, University of the Pacific, 3601 Pacific Avenue, Stockton, CA 95211 (USA).
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White DE, Tadross PM, Lu Z, Jacobsen EN. A broadly applicable and practical oligomeric (salen) Co catalyst for enantioselective epoxide ring-opening reactions. Tetrahedron 2014; 70:4165-4180. [PMID: 25045188 PMCID: PMC4096935 DOI: 10.1016/j.tet.2014.03.043] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The (salen) Co catalyst (4a) can be prepared as a mixture of cyclic oligomers in a short, chromatography-free synthesis from inexpensive, commercially available precursors. This catalyst displays remarkable enhancements in reactivity and enantioselectivity relative to monomeric and other multimeric (salen) Co catalysts in a wide variety of enantioselective epoxide ring-opening reactions. The application of catalyst 4a is illustrated in the kinetic resolution of terminal epoxides by nucleophilic ring-opening with water, phenols, and primary alcohols; the desymmetrization of meso epoxides by addition of water and carbamates; and the desymmetrization of oxetanes by intramolecular ring opening with alcohols and phenols. The favorable solubility properties of complex 4a under the catalytic conditions facilitated mechanistic studies, allowing elucidation of the basis for the beneficial effect of oligomerization. Finally, a catalyst selection guide is provided to delineate the specific advantages of oligomeric catalyst 4a relative to (salen) Co monomer 1 for each reaction class.
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Affiliation(s)
- David E White
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Pamela M Tadross
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Zhe Lu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Eric N Jacobsen
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
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Feng Y, Lydon ME, Jones CW. Polymer Resin Supported Cobalt-Salen Catalysts: Role of Co(II)Salen Species in the Regioselective Ring Opening of 1,2-Epoxyhexane with Methanol. ChemCatChem 2013. [DOI: 10.1002/cctc.201300578] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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10
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Voronova K, Purgel M, Udvardy A, Bényei AC, Kathó Á, Joó F. Hydrogenation and Redox Isomerization of Allylic Alcohols Catalyzed by a New Water-Soluble Pd–tetrahydrosalen Complex. Organometallics 2013. [DOI: 10.1021/om400555u] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Krisztina Voronova
- Department
of Physical Chemistry, University of Debrecen, Egyetem tér 1., H-4032 Debrecen,
Hungary
| | - Mihály Purgel
- MTA-DE Research Group on Homogeneous Catalysis and Reaction Mechanisms, P.O. Box 7, H-4010 Debrecen, Hungary
| | - Antal Udvardy
- Department
of Physical Chemistry, University of Debrecen, Egyetem tér 1., H-4032 Debrecen,
Hungary
| | - Attila C. Bényei
- Department
of Physical Chemistry, University of Debrecen, Egyetem tér 1., H-4032 Debrecen,
Hungary
| | - Ágnes Kathó
- Department
of Physical Chemistry, University of Debrecen, Egyetem tér 1., H-4032 Debrecen,
Hungary
| | - Ferenc Joó
- Department
of Physical Chemistry, University of Debrecen, Egyetem tér 1., H-4032 Debrecen,
Hungary
- MTA-DE Research Group on Homogeneous Catalysis and Reaction Mechanisms, P.O. Box 7, H-4010 Debrecen, Hungary
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International Scientific and Technological Cooperation Award der Volksrepublik China: R. N. Zare und F. Besenbacher / Eugene J. Houdry Award: G. Bellussi / Paul H. Emmett Award: C. W. Jones / Preise beim International Symposium on Macrocyclic and Supramol. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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International Scientific and Technological Cooperation Award of the People's Republic of China: R. N. Zare and F. Besenbacher / Eugene J. Houdry Award: G. Bellussi / Paul H. Emmett Award: C. W. Jones / Awards at the International Symposium on Macrocyclic. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/anie.201304635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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