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Robertson J, Ungogo MA, Aldfer MM, Lemgruber L, McWhinnie FS, Bode BE, Jones KL, Watson AJB, de Koning HP, Burley GA. Direct, Late-Stage Mono-N-arylation of Pentamidine: Method Development, Mechanistic Insight, and Expedient Access to Novel Antiparastitics against Diamidine-Resistant Parasites. ChemMedChem 2021; 16:3396-3401. [PMID: 34357687 PMCID: PMC9291547 DOI: 10.1002/cmdc.202100509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Indexed: 11/16/2022]
Abstract
A selective mono‐N‐arylation strategy of amidines under Chan‐Lam conditions is described. During the reaction optimization phase, the isolation of a mononuclear Cu(II) complex provided unique mechanistic insight into the operation of Chan‐Lam mono‐N‐arylation. The scope of the process is demonstrated, and then applied to access the first mono‐N‐arylated analogues of pentamidine. Sub‐micromolar activity against kinetoplastid parasites was observed for several analogues with no cross‐resistance in pentamidine and diminazene‐resistant trypanosome strains and against Leishmania mexicana. A fluorescent mono‐N‐arylated pentamidine analogue revealed rapid cellular uptake, accumulating in parasite nuclei and the kinetoplasts. The DNA binding capability of the mono‐N‐arylated pentamidine series was confirmed by UV‐melt measurements using AT‐rich DNA. This work highlights the potential to use Chan‐Lam mono‐N‐arylation to develop therapeutic leads against diamidine‐resistant trypanosomiasis and leishmaniasis.
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Affiliation(s)
- Jack Robertson
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Marzuq A Ungogo
- Institute of Infection, Immunity, and Inflammation, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, G12 8TA, UK
| | - Mustafa M Aldfer
- Institute of Infection, Immunity, and Inflammation, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, G12 8TA, UK
| | - Leandro Lemgruber
- Glasgow Imaging Facility, Institute of Infection, Immunity, and Inflammation, College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, UK
| | - Fergus S McWhinnie
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Bela E Bode
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9ST, UK
| | - Katherine L Jones
- GlaxoSmithKline, Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Allan J B Watson
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9ST, UK
| | - Harry P de Koning
- Institute of Infection, Immunity, and Inflammation, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, G12 8TA, UK
| | - Glenn A Burley
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
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Knuhtsen A, Whiting R, McWhinnie FS, Whitmore C, Smith BO, Green AC, Timperley CM, Kinnear KI, Jamieson AG. μ‐Conotoxin KIIIA
peptidomimetics that block human
voltage‐gated
sodium channels. Pept Sci (Hoboken) 2020. [DOI: 10.1002/pep2.24203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Astrid Knuhtsen
- School of Chemistry, Joseph Black Building University of Glasgow Glasgow UK
| | - Rachel Whiting
- Chemical, Biological and Radiological Division Defence Science and Technology Laboratory, Porton Down Salisbury, Wiltshire UK
| | | | - Charlotte Whitmore
- Chemical, Biological and Radiological Division Defence Science and Technology Laboratory, Porton Down Salisbury, Wiltshire UK
| | - Brian O. Smith
- Institute of Molecular, Cell & Systems Biology, College of Medical, Veterinary & Life Sciences, Joseph Black Building University of Glasgow Glasgow UK
| | - A. Christopher Green
- Chemical, Biological and Radiological Division Defence Science and Technology Laboratory, Porton Down Salisbury, Wiltshire UK
| | - Christopher M. Timperley
- Chemical, Biological and Radiological Division Defence Science and Technology Laboratory, Porton Down Salisbury, Wiltshire UK
| | - Kenneth I. Kinnear
- Chemical, Biological and Radiological Division Defence Science and Technology Laboratory, Porton Down Salisbury, Wiltshire UK
| | - Andrew G. Jamieson
- School of Chemistry, Joseph Black Building University of Glasgow Glasgow UK
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Knuhtsen A, Whitmore C, McWhinnie FS, McDougall L, Whiting R, Smith BO, Timperley CM, Green AC, Kinnear KI, Jamieson AG. α-Conotoxin GI triazole-peptidomimetics: potent and stable blockers of a human acetylcholine receptor. Chem Sci 2019. [DOI: 10.1039/c8sc04198a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A conotoxin peptidomimetic was developed as a potential muscle relaxant that is highly potent and blood plasma stable.
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Affiliation(s)
| | - Charlotte Whitmore
- Chemical, Biological and Radiological Division
- Defence Science and Technology Laboratory
- Salisbury
- SP4 0JQ UK
| | | | | | - Rachel Whiting
- Chemical, Biological and Radiological Division
- Defence Science and Technology Laboratory
- Salisbury
- SP4 0JQ UK
| | - Brian O. Smith
- Institute of Molecular, Cell & Systems Biology
- College of Medical, Veterinary & Life Sciences
- University of Glasgow
- Glasgow
- G12 8QQ UK
| | - Christopher M. Timperley
- Chemical, Biological and Radiological Division
- Defence Science and Technology Laboratory
- Salisbury
- SP4 0JQ UK
| | - A. Christopher Green
- Chemical, Biological and Radiological Division
- Defence Science and Technology Laboratory
- Salisbury
- SP4 0JQ UK
| | - Kenneth I. Kinnear
- Chemical, Biological and Radiological Division
- Defence Science and Technology Laboratory
- Salisbury
- SP4 0JQ UK
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McWhinnie FS, Sepp K, Wilson C, Kunath T, Hupp TR, Baker TS, Houston DR, Hulme AN. Mono-Substituted Hydrocarbon Diastereomer Combinations Reveal Stapled Peptides with High Structural Fidelity. Chemistry 2018; 24:2094-2097. [DOI: 10.1002/chem.201705983] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Fergus S. McWhinnie
- EaStChem School of Chemistry; University of Edinburgh; David Brewster Road Edinburgh EH9 3FJ UK
- MRC Centre for Regenerative Medicine, ISCR; University of Edinburgh; Edinburgh EH16 4UU UK
| | - Kristel Sepp
- EaStChem School of Chemistry; University of Edinburgh; David Brewster Road Edinburgh EH9 3FJ UK
| | - Charlotte Wilson
- EaStChem School of Chemistry; University of Edinburgh; David Brewster Road Edinburgh EH9 3FJ UK
| | - Tilo Kunath
- MRC Centre for Regenerative Medicine, ISCR; University of Edinburgh; Edinburgh EH16 4UU UK
| | - Ted R. Hupp
- Institute of Genetics and Molecular Medicine; University of Edinburgh; Edinburgh EH4 2XR UK
| | | | - Douglas R. Houston
- Institute of Quantitative Biology, Biochemistry and Biotechnology; University of Edinburgh; Edinburgh EH9 3BF UK
| | - Alison N. Hulme
- EaStChem School of Chemistry; University of Edinburgh; David Brewster Road Edinburgh EH9 3FJ UK
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Affiliation(s)
- Heather J. Johnston
- EaStCHEM School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JJ, U.K
| | - Fergus S. McWhinnie
- EaStCHEM School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JJ, U.K
| | - Felicetta Landi
- EaStCHEM School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JJ, U.K
| | - Alison N. Hulme
- EaStCHEM School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JJ, U.K
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