Bambus[4,6]urils as dual scaffolds for multivalent iminosugar presentation and ion transport: access to unprecedented glycosidase-directed anion caging agents - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Accéder directement au contenu
Article Dans Une Revue Molecules Année : 2022

Bambus[4,6]urils as dual scaffolds for multivalent iminosugar presentation and ion transport: access to unprecedented glycosidase-directed anion caging agents

Résumé

Bambusurils, BU[4] and BU[6], were used for the first time as multivalent scaffolds to link glycosidases inhibitors derived from 1-deoxynojirimycin (DNJ). Two linear DNJ ligands having six or nine carbon alkyl azido linkers or a trivalent DNJ dendron were grafted onto octapropargylated BU[4] and dodecapropargylated BU[6] using copper-catalyzed cycloaddition (CuAAC) to yield corresponding neoglycobambus[4] and neoglycobambus[6]urils bearing 8 to 24 iminosugars. The inhibition potencies of neoglycoBU[4], neoglycoBU[6] and neoglycoBU[6] caging anions were evaluated against Jack Bean α-mannosidase and compared to monovalent DNJ derivatives. Strong affinity enhancements per inhibitory head were obtained for the clusters holding trivalent dendrons with inhibitory constants in the nanomolar range (K$_i$ = 24 nM for BU[4] with 24 DNJ units). Interestingly, the anion (bromide or iodide) encapsulated inside the cavity of BU[6] does not modify the inhibition potency of neoglycoBU[6], opening the way to water-soluble glycosidase-directed anion caging agents that may find applications in important fields such as bio(in)organic chemistry or oncology.

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Chimie
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Dates et versions

cea-04361621 , version 1 (22-12-2023)

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Marine Lafosse, Yan Liang, Jérémy P Schneider, Elise Cartier, Anne Bodlenner, et al.. Bambus[4,6]urils as dual scaffolds for multivalent iminosugar presentation and ion transport: access to unprecedented glycosidase-directed anion caging agents. Molecules, 2022, 27 (15), pp.4772. ⟨10.3390/molecules27154772⟩. ⟨cea-04361621⟩
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