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    An innovative and efficient route to the synthesis of metal-based glycoconjugates: proof-of-concept and potential applications


    Pettenuzzo, Andrea and Montagner, Diego and McArdle, Patrick and Ronconi, Luca (2018) An innovative and efficient route to the synthesis of metal-based glycoconjugates: proof-of-concept and potential applications. Dalton Transactions, 47 (31). pp. 10721-10736. ISSN 1477-9226

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    Abstract

    With a view to developing more efficient strategies to the functionalization of metallodrugs with carbohydrates, we here report on an innovative and efficient synthetic route to generate gold(III) glycoconjugates in high yields and purity. The method is based on the initial synthesis of the zinc(II)-dithiocarbamato intermediate [ZnII(SSC-Inp-GlcN)2] (Inp = isonipecotic moiety; GlcN = amino-glucose) followed by the transfer of the glucoseisonipecoticdithiocarbamato ligand to the gold(III) center via transmetallation reaction between the zinc(II) intermediate and K[AuIIIBr4] in 1 : 2 stoichiometric ratio, yielding the corresponding glucose-functionalized gold(III)-dithiocarbamato derivative [AuIIIBr2(SSC-Inp-GlcN)]. No protection/deprotection of the amino-glucose scaffold and no chromatographic purification were needed. The synthetic protocol was optimized for glucose precursors bearing the amino function at either the C2 or the C6 position, and works in the case of both α and β anomers. The application of the synthetic strategy was also successfully extended to other metal ions of biomedical interest, such as gold(I) and platinum(II), to obtain [AuI(SSC-Inp-GlcN)(PPh3)] and [PtII(SSC-Inp-GlcN)2], respectively. All compounds were fully characterized by elemental analysis, mid- and far-IR, mono- and multidimensional NMR spectroscopy, and, where possible, X-ray crystallography. Results and potential applications are here discussed.

    Item Type: Article
    Keywords: Anticancer-Agents; In-Vitro; Dithiocatbamate Derivatives; Glucose Transporters; Model Biomolecules; Hydrogen-Peroxide; Crystal Structure; Thermal Behavior; Amino-Sugars; Complexes;
    Academic Unit: Faculty of Science and Engineering > Chemistry
    Item ID: 12576
    Identification Number: https://doi.org/10.1039/C8DT01583J
    Depositing User: Diego Montagner
    Date Deposited: 20 Mar 2020 11:09
    Journal or Publication Title: Dalton Transactions
    Publisher: Royal Society of Chemistry
    Refereed: Yes
    URI:

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