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  • Synthesis of glycoconjugate carbonic anhydrase inhibitors by ruthenium-catalysed azide-alkyne 1,3-dipolar cycloaddition

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    Author(s)
    Salmon, Adam J
    Williams, Michael L
    Maresca, Alfonso
    Supuran, Claudiu T
    Poulsen, Sally-Ann
    Griffith University Author(s)
    Poulsen, Sally-Ann
    Williams, Michael L.
    Salmon, Adam J.
    Year published
    2011
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    Abstract
    Carbonic anhydrase IX (CA IX) is a recently validated target for the development of new cancer therapies. In this Letter we describe the synthesis and CA inhibition of a novel series of carbohydrate-based 1,5-disubstituted-1,2,3-triazole benzenesulfonamides. The key step of our synthesis is the regioselective Huisgen's 1,3-dipolar cycloaddition reaction (1,3-DCR) from carbohydrate azide substrates and 4-ethynylbenzenesulfonamide using a ruthenium-catalysed azide-alkyne cycloaddition (RuAAC). Our findings identified a number of triazole inhibitors (compounds 18, 19, 21-23, and 26) that block CA IX activity with inhibition ...
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    Carbonic anhydrase IX (CA IX) is a recently validated target for the development of new cancer therapies. In this Letter we describe the synthesis and CA inhibition of a novel series of carbohydrate-based 1,5-disubstituted-1,2,3-triazole benzenesulfonamides. The key step of our synthesis is the regioselective Huisgen's 1,3-dipolar cycloaddition reaction (1,3-DCR) from carbohydrate azide substrates and 4-ethynylbenzenesulfonamide using a ruthenium-catalysed azide-alkyne cycloaddition (RuAAC). Our findings identified a number of triazole inhibitors (compounds 18, 19, 21-23, and 26) that block CA IX activity with inhibition constants less than 10 nM. One inhibitor (compound 17) possessed very good selectivity for CA IX over off-target CAs. These CA inhibitors have developmental potential to selectively target cancer cells, leading to cell death.
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    Journal Title
    Bioorganic & Medicinal Chemistry Letters
    Volume
    21
    Issue
    20
    DOI
    https://doi.org/10.1016/j.bmcl.2011.08.066
    Copyright Statement
    © 2011 Elsevier. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
    Subject
    Medicinal and biomolecular chemistry
    Biologically active molecules
    Organic chemistry
    Pharmacology and pharmaceutical sciences
    Publication URI
    http://hdl.handle.net/10072/42425
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    • Journal articles

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