1
|
Liu M, Yan K, Wen J, Li X, Wang X, Lu F, Wang X, Wang H. Synthesis of Polysubstituted Phenols by Rhodium‐Catalyzed C−H/Diazo Coupling and Tandem Annulation. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001456] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Min Liu
- Institute of Medicine and Materials Applied Technologies College of Chemistry and Chemical Engineering Qufu Normal University Jining Shi Qufu 273165 P. R. China
| | - Kelu Yan
- Institute of Medicine and Materials Applied Technologies College of Chemistry and Chemical Engineering Qufu Normal University Jining Shi Qufu 273165 P. R. China
| | - Jiangwei Wen
- Institute of Medicine and Materials Applied Technologies College of Chemistry and Chemical Engineering Qufu Normal University Jining Shi Qufu 273165 P. R. China
| | - Xue Li
- Institute of Medicine and Materials Applied Technologies College of Chemistry and Chemical Engineering Qufu Normal University Jining Shi Qufu 273165 P. R. China
| | - Xiaoyu Wang
- Institute of Medicine and Materials Applied Technologies College of Chemistry and Chemical Engineering Qufu Normal University Jining Shi Qufu 273165 P. R. China
| | - Fengjie Lu
- Institute of Medicine and Materials Applied Technologies College of Chemistry and Chemical Engineering Qufu Normal University Jining Shi Qufu 273165 P. R. China
| | - Xiu Wang
- Institute of Medicine and Materials Applied Technologies College of Chemistry and Chemical Engineering Qufu Normal University Jining Shi Qufu 273165 P. R. China
| | - Hua Wang
- Institute of Medicine and Materials Applied Technologies College of Chemistry and Chemical Engineering Qufu Normal University Jining Shi Qufu 273165 P. R. China
| |
Collapse
|
2
|
Walloch P, Henke B, Häuer S, Bergmann B, Spielmann T, Beitz E. Introduction of Scaffold Nitrogen Atoms Renders Inhibitors of the Malarial l-Lactate Transporter, PfFNT, Effective against the Gly107Ser Resistance Mutation. J Med Chem 2020; 63:9731-9741. [DOI: 10.1021/acs.jmedchem.0c00852] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Philipp Walloch
- Department of Pharmaceutical and Medicinal Chemistry, Christian-Albrechts-University of Kiel, 24118 Kiel, Germany
| | - Björn Henke
- Department of Pharmaceutical and Medicinal Chemistry, Christian-Albrechts-University of Kiel, 24118 Kiel, Germany
| | - Susan Häuer
- Department of Pharmaceutical and Medicinal Chemistry, Christian-Albrechts-University of Kiel, 24118 Kiel, Germany
| | - Bärbel Bergmann
- Bernhard-Nocht-Institute for Tropical Medicine, 20359 Hamburg, Germany
| | - Tobias Spielmann
- Bernhard-Nocht-Institute for Tropical Medicine, 20359 Hamburg, Germany
| | - Eric Beitz
- Department of Pharmaceutical and Medicinal Chemistry, Christian-Albrechts-University of Kiel, 24118 Kiel, Germany
| |
Collapse
|
3
|
Wang C, Adams SR, Xu H, Zhu W, Ahrens ET. β‑Diketonate-Iron(III) Complex: A Versatile Fluorine-19 MRI Signal Enhancement Agent. ACS APPLIED BIO MATERIALS 2019; 2:3836-3842. [PMID: 33981964 DOI: 10.1021/acsabm.9b00455] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Fluorine-19 magnetic resonance imaging (MRI) has gained considerable momentum as a promising imaging modality for in vivo tracking of cellular therapies and as a diagnostic for inflammatory disease. To further the utility of this technique, we increase imaging probe sensitivity by merging paramagnetic metal chelates with aqueous perfluorocarbon (PFC) nanoemulsions. We prepared a highly fluorinated ferric tris(β-diketonate) chelate (MW = 1265.2 g/mol) at gram scale. This iron chelate is soluble in multiple PFC oils used for MRI and readily reduces the 19F longitudinal relaxation time (T 1) to <100 ms with modest line broadening and displays superior properties for 19F MRI applications. The sensitivity enhancement by Fe(III) laden PFC nanoemulsion was confirmed in MRI phantom studies, where reduced T 1 speeds data acquisition thereby increasing the 19F image sensitivity per time via signal averaging. Additionally, 19F relaxivity of nanoemulsions incorporating other metal ions, including Gd, Er, Ho, Dy, Mn, Cr, and Ni, were evaluated. High-moment lanthanide ions, such as Gd(III), display severe line broadening, but other ions [e.g., Ho(III)] induce pseudocontact chemical shifts (up to 0.5 ppm) of 19F in nanoemulsion, which makes them potentially useful for multichromatic 19F imaging. Formulated nanoemulsions have a shelf life >200 days. Free β-diketonate or its iron complex in formed PFC nanoemulsion did not induce cytotoxicity in intracellularly labeled macrophages. Overall, ferric tris(β-diketonate) chelate provides a scalable approach for boosting sensitivity of PFC-based 19F MRI probes. More generally, it can functionalize PFC oil, whose chemical modification remains challenging.
Collapse
Affiliation(s)
- Chao Wang
- Department of Radiology, University of California, San Diego, La Jolla, California 92093, United States
| | - Stephen R Adams
- Department of Pharmacology, University of California, San Diego, La Jolla, California 92093, United States
| | - Hongyan Xu
- Department of Radiology, University of California, San Diego, La Jolla, California 92093, United States
| | - Wenlian Zhu
- Department of Radiology, University of California, San Diego, La Jolla, California 92093, United States
| | - Eric T Ahrens
- Department of Radiology, University of California, San Diego, La Jolla, California 92093, United States
| |
Collapse
|
4
|
Zou LH, Zhao C, Li PG, Wang Y, Li J. Transition-Metal-Free C–S Bond Formation: Synthesis of Polysubstituted Diaryl Sulfides and α-Thioarylcarbonyl Compounds. J Org Chem 2017; 82:12892-12898. [DOI: 10.1021/acs.joc.7b02384] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Liang-Hua Zou
- School
of Pharmaceutical Sciences, Jiangnan University. Lihu Avenue 1800, 214122 Wuxi, P. R. China
- The
Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry
of Education, School of Biotechnology, Jiangnan University. Lihu Avenue 1800, 214122 Wuxi, P. R. China
| | - Cong Zhao
- School
of Pharmaceutical Sciences, Jiangnan University. Lihu Avenue 1800, 214122 Wuxi, P. R. China
- The
Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry
of Education, School of Biotechnology, Jiangnan University. Lihu Avenue 1800, 214122 Wuxi, P. R. China
| | - Ping-Gui Li
- State
Key Laboratory of Coordination Chemistry, Collaborative Innovation
Center of Chemistry for Life Sciences, School of Chemistry and Chemical
Engineering, Nanjing University, Nanjing 210093, China
| | - Ying Wang
- School
of Pharmaceutical Sciences, Jiangnan University. Lihu Avenue 1800, 214122 Wuxi, P. R. China
| | - Jie Li
- School
of Pharmaceutical Sciences, Jiangnan University. Lihu Avenue 1800, 214122 Wuxi, P. R. China
| |
Collapse
|
5
|
Lin LR, Wang X, Wei GN, Tang HH, Zhang H, Ma LH. Azobenzene-derived tris-β-diketonate lanthanide complexes: reversible trans-to-cis photoisomerization in solution and solid state. Dalton Trans 2016; 45:14954-64. [PMID: 27549432 DOI: 10.1039/c6dt01310d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Novel azobenzene-derived β-diketonates (4,4,5,5,6,6,6-heptafluoro-1-azobenzene-1,3-hexanedione (LA), 4,4,5,5,6,6,6-heptafluoro-1-(4-dimethylamino)azobenzene-1,3-hexanedione (LB)) were designed and their complexes with lanthanide cations (La(3+), Eu(3+), Gd(3+), Yb(3+)) were prepared and characterized by (1)H NMR, FT-IR, and elemental analysis. Three of the complexes were crystallized successfully and identified by X-ray diffraction. It was significant to find that LA showed remarkably reversible trans-to-cis isomerization properties, however, LB, bearing an electron donor compared with LA, slowed down the isomerization to an extent. The presence of Ln(iii) enhanced the reversible trans-to-cis isomerization properties of both LA and LB a little upon photoirradiation in organic solvents, and amazingly increased the fatigue resistance. In addition, the complexes doped in polymethyl methacrylate (PMMA) films produced a similar phenomenon as well as when in solution. Theoretical calculations based on time dependent density functional theory (TD-DFT) were performed for geometry optimization and to determine the excitation energies of LA and LB to gain further insight into the electronic structure of the complexes, and the data were consistent with the experimental results. The excellent reversible photoisomerization properties of the newly designed Ln(iii) complexes can offer important advantages that will help with the further study of these materials to reach their full potential in applications such as molecular switching devices.
Collapse
Affiliation(s)
- Li-Rong Lin
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China.
| | | | | | | | | | | |
Collapse
|
6
|
Qian J, Yi W, Huang X, Miao Y, Zhang J, Cai C, Zhang W. One-Pot Synthesis of 3,5-Disubstituted and Polysubstituted Phenols from Acyclic Precursors. Org Lett 2015; 17:1090-3. [DOI: 10.1021/ol503615n] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Jinlong Qian
- School
of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Wenbin Yi
- School
of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xin Huang
- Department
of Chemistry, University of Massachusetts Boston, Boston, Massachusetts 02125, United States
| | - Yongbo Miao
- School
of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Junkai Zhang
- School
of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Chun Cai
- School
of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Wei Zhang
- Department
of Chemistry, University of Massachusetts Boston, Boston, Massachusetts 02125, United States
| |
Collapse
|
7
|
Emer E, Twilton J, Tredwell M, Calderwood S, Collier TL, Liégault B, Taillefer M, Gouverneur V. Diversity-oriented approach to CF3CHF-, CF3CFBr-, CF3CF2-, (CF3)2CH-, and CF3(SCF3)CH-substituted arenes from 1-(diazo-2,2,2-trifluoroethyl)arenes. Org Lett 2014; 16:6004-7. [PMID: 25379614 DOI: 10.1021/ol5030184] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Arenes substituted with perfluoroalkyl groups are attractive targets for drug and agrochemical development. Exploiting the carbenic character of donor/acceptor diazo compounds, a diversity-oriented synthesis of perfluoroalkylated arenes, for late stage fluorofunctionalization, is described. The reaction of 1-(diazo-2,2,2-trifluoroethyl)arenes with HF, F/Br, F2, CF3H, and CF3SH sources give direct access to a variety of perfluoroalkyl-substituted arenes presenting with incremental fluorine content. The value of this approach is also demonstrated for radiochemistry and positron emission tomography with the [(18)F]-labeling of CF3CHF-, CF3CBrF-, and CF3CF2-arenes from [(18)F]fluoride.
Collapse
Affiliation(s)
- Enrico Emer
- Chemistry Research Laboratory, University of Oxford , 12 Mansfield Road, OX1 3TA Oxford, U.K
| | | | | | | | | | | | | | | |
Collapse
|
8
|
Regioselective [3+3] Cyclization of 1,3-Bis(silyloxy)buta-1,3-dienes with 1,1,1-Trifluoro-4-(silyloxy)alk-3-en-2-ones: New and Convenient Synthesis of Functionalized 5-Alkyl-3-(trifluoromethyl)phenols. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201200056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
9
|
[3+3] Cyclizations of 1,3-bis(trimethylsilyloxy)-1,3-butadienes—a new approach to diverse CF3-substituted fluorenes, dibenzofurans, 9,10-dihydrophenanthrenes and 6H-benzo[c]chromenes. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.01.101] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
10
|
Ladzik S, Lubbe M, Kelzhanova NK, Abilov ZA, Feist H, Langer P. Regioselective synthesis of 5-ethoxycarbonyl-, 5-acetyl- and 5-trifluoroacetyl-6-trifluoromethylsalicylates by one-pot cyclizations of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with 3-alkoxy-2-alken-1-ones. J Fluor Chem 2012. [DOI: 10.1016/j.jfluchem.2012.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
11
|
Gregson TJ, Herbert JM, Row EC. Synthetic approaches to regiospecifically mono- and dilabelled arenes. J Labelled Comp Radiopharm 2011. [DOI: 10.1002/jlcr.1783] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
12
|
Büttner S, Bendrath F, Langer P. Synthesis and reactions of the first fluoroalkylated 1,3-bis(trimethylsilyloxy)-1,3-butadienes. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.05.082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
13
|
Büttner S, Riahi A, Hussain I, Yawer MA, Lubbe M, Villinger A, Reinke H, Fischer C, Langer P. First synthesis of functionalized 5-aryl-3-(trifluoromethyl)phenols by regioselective [3+3] cyclocondensations of 1,3-bis(silyloxy)-1,3-butadienes with 3-aryl-3-silyloxy-1-trifluoromethyl-2-en-1-ones. Tetrahedron 2009. [DOI: 10.1016/j.tet.2008.12.076] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|