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A minimalist approach to stereoselective glycosylation with unprotected donors

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  • Kim Le Mai Hoang

    (Nanyang Technological University)

  • Jing-xi He

    (Nanyang Technological University)

  • Gábor Báti

    (Nanyang Technological University)

  • Mary B. Chan-Park

    (Nanyang Technological University)

  • Xue-Wei Liu

    (Nanyang Technological University)

Abstract

Mechanistic study of carbohydrate interactions in biological systems calls for the chemical synthesis of these complex structures. Owing to the specific stereo-configuration at each anomeric linkage and diversity in branching, significant breakthroughs in recent years have focused on either stereoselective glycosylation methods or facile assembly of glycan chains. Here, we introduce the unification approach that offers both stereoselective glycosidic bond formation and removal of protection/deprotection steps required for further elongation. Using dialkylboryl triflate as an in situ masking reagent, a wide array of glycosyl donors carrying one to three unprotected hydroxyl groups reacts with various glycosyl acceptors to furnish the desired products with good control over regioselectivity and stereoselectivity. This approach demonstrates the feasibility of straightforward access to important structural scaffolds for complex glycoconjugate synthesis.

Suggested Citation

  • Kim Le Mai Hoang & Jing-xi He & Gábor Báti & Mary B. Chan-Park & Xue-Wei Liu, 2017. "A minimalist approach to stereoselective glycosylation with unprotected donors," Nature Communications, Nature, vol. 8(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-01073-7
    DOI: 10.1038/s41467-017-01073-7
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