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Zhao Y, van Nguyen H, Male L, Craven P, Buckley BR, Fossey JS. Phosphino-Triazole Ligands for Palladium-Catalyzed Cross-Coupling. Organometallics 2018; 37:4224-4241. [PMID: 30524158 PMCID: PMC6265957 DOI: 10.1021/acs.organomet.8b00539] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Indexed: 11/29/2022]
Abstract
Twelve 1,5-disubtituted and fourteen 5-substituted 1,2,3-triazole derivatives bearing diaryl or dialkyl phosphines at the 5-position were synthesized and used as ligands for palladium-catalyzed Suzuki-Miyaura cross-coupling reactions. Bulky substrates were tested, and lead-like product formation was demonstrated. The online tool SambVca2.0 was used to assess steric parameters of ligands and preliminary buried volume determination using XRD-obtained data in a small number of cases proved to be informative. Two modeling approaches were compared for the determination of the buried volume of ligands where XRD data was not available. An approach with imposed steric restrictions was found to be superior in leading to buried volume determinations that closely correlate with observed reaction conversions. The online tool LLAMA was used to determine lead-likeness of potential Suzuki-Miyaura cross-coupling products, from which 10 of the most lead-like were successfully synthesized. Thus, confirming these readily accessible triazole-containing phosphines as highly suitable ligands for reaction screening and optimization in drug discovery campaigns.
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Affiliation(s)
- Yiming Zhao
- School of Chemistry and X-ray Crystallography Facility, School of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, United Kingdom
| | - Huy van Nguyen
- School of Chemistry and X-ray Crystallography Facility, School of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, United Kingdom
| | - Louise Male
- School of Chemistry and X-ray Crystallography Facility, School of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, United Kingdom
| | - Philip Craven
- School of Chemistry and X-ray Crystallography Facility, School of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, United Kingdom
| | - Benjamin R Buckley
- Department of Chemistry, Loughborough University, Loughborough, Leicestershire LE11 3TU, United Kingdom
| | - John S Fossey
- School of Chemistry and X-ray Crystallography Facility, School of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, United Kingdom
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Zhai W, Chapin BM, Yoshizawa A, Wang HC, Hodge SA, James TD, Anslyn EV, Fossey JS. “Click-fluors”: triazole-linked saccharide sensors. Org Chem Front 2016. [DOI: 10.1039/c6qo00171h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of boronic acid-containing saccharide receptors was synthesised via copper catalysed azide–alkyne cycloaddition (CuAAC) reactions.
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Affiliation(s)
- Wenlei Zhai
- School of Chemistry
- University of Birmingham
- Birmingham
- UK
| | - Brette M. Chapin
- School of Chemistry
- University of Birmingham
- Birmingham
- UK
- Department of Chemistry and Biochemistry
| | | | - Hui-Chen Wang
- School of Chemistry
- University of Birmingham
- Birmingham
- UK
| | | | | | - Eric V. Anslyn
- Department of Chemistry and Biochemistry
- The University of Texas at Austin
- Austin
- USA
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Mak LH, Georgiades SN, Rosivatz E, Whyte GF, Mirabelli M, Vilar R, Woscholski R. A small molecule mimicking a phosphatidylinositol (4,5)-bisphosphate binding pleckstrin homology domain. ACS Chem Biol 2011; 6:1382-90. [PMID: 21958214 DOI: 10.1021/cb2003187] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Inositol phospholipids have emerged as important key players in a wide variety of cellular functions. Among the seven existing inositol phospholipids, phosphatidylinositol (4,5)-bisphosphate (PI(4,5)P(2)) has attracted much attention in recent years due to its important role in numerous cellular signaling events and regulations, which in turn impact several human diseases. This particular lipid is recognized in the cell by specific lipid binding domains, such as the Pleckstrin-homology (PH) domain, which is also employed as a tool to monitor this important lipid. Here, we describe the synthesis and biological characterization of a small molecule that mimics the PH domain as judged by its ability to bind specifically to only PI(4,5)P(2) and effectively compete with the PH domain in vitro and in a cellular environment. The binding constant of this small molecule PH domain mimetic (PHDM) was determined to be 17.6 ± 10.1 μM, similar in potency to the PH domain. Using NIH 3T3 mouse fibroblast cells we demonstrated that this compound is cell-permeable and able to modulate PI(4,5)P(2)-dependent effects in a cellular environment such as the endocytosis of the transferrin receptor, loss of mitochondria, as well as stress fiber formation. This highly PI(4,5)P(2)-specific chemical mimetic of a PH domain not only is a powerful research tool but might also be a lead compound in future drug developments targeting PI(4,5)P(2)-dependent diseases such as Lowe syndrome.
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Affiliation(s)
- Lok Hang Mak
- Department of Chemistry, ‡Division of Cell and Molecular Biology, and §Institute of Chemical Biology, Imperial College London, Exhibition Road, London SW7 2AZ, U.K
| | - Savvas N. Georgiades
- Department of Chemistry, ‡Division of Cell and Molecular Biology, and §Institute of Chemical Biology, Imperial College London, Exhibition Road, London SW7 2AZ, U.K
| | - Evelyn Rosivatz
- Department of Chemistry, ‡Division of Cell and Molecular Biology, and §Institute of Chemical Biology, Imperial College London, Exhibition Road, London SW7 2AZ, U.K
| | - Gillian F. Whyte
- Department of Chemistry, ‡Division of Cell and Molecular Biology, and §Institute of Chemical Biology, Imperial College London, Exhibition Road, London SW7 2AZ, U.K
| | - Marianna Mirabelli
- Department of Chemistry, ‡Division of Cell and Molecular Biology, and §Institute of Chemical Biology, Imperial College London, Exhibition Road, London SW7 2AZ, U.K
| | - Ramon Vilar
- Department of Chemistry, ‡Division of Cell and Molecular Biology, and §Institute of Chemical Biology, Imperial College London, Exhibition Road, London SW7 2AZ, U.K
| | - Rudiger Woscholski
- Department of Chemistry, ‡Division of Cell and Molecular Biology, and §Institute of Chemical Biology, Imperial College London, Exhibition Road, London SW7 2AZ, U.K
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Bapat AP, Roy D, Ray JG, Savin DA, Sumerlin BS. Dynamic-Covalent Macromolecular Stars with Boronic Ester Linkages. J Am Chem Soc 2011; 133:19832-8. [DOI: 10.1021/ja207005z] [Citation(s) in RCA: 191] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
| | | | - Jacob G. Ray
- School of Polymers and High Performance Materials, The University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Daniel A. Savin
- School of Polymers and High Performance Materials, The University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
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Jackson TR, Springall JS, Rogalle D, Masumoto N, Ching Li H, D'Hooge F, Perera SP, Jenkins ATA, James TD, Fossey JS, van den Elsen JMH. Boronate affinity saccharide electrophoresis: a novel carbohydrate analysis tool. Electrophoresis 2008; 29:4185-91. [PMID: 18925583 DOI: 10.1002/elps.200800178] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The incorporation of specialised carbohydrate affinity ligand methacrylamido phenylboronic acid in polyacrylamide gels for fluorophore-assisted carbohydrate electrophoresis greatly improved the effective separation of saccharides that show similar mobilities in standard electrophoresis. Polyacrylamide gel electrophoresis using methacrylamido phenylboronic acid in low loading (typically 0.5-1% dry weight) was unequivocally shown to alter retention of labelled saccharides depending on their boronate affinity. While conventional fluorophore-assisted carbohydrate electrophoresis of 2-aminoacridone labelled glucose oligomers showed an inverted parabolic migration, an undesired trait of small oligosaccharides labelled with this neutral fluorophore, boron affinity saccharide electrophoresis separation of these carbohydrates completely restored their predicted running order, based on their charge/mass ratio, and resulted in improved separation of the analyte saccharides. These results exemplify boron affinity saccharide electrophoresis as an important new technique for analysing carbohydrates and sugar-containing molecules.
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Affiliation(s)
- Thomas R Jackson
- Department of Biology and Biochemistry, University of Bath, Bath, UK
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