1,2,3-Triazoles and related glycoconjugates as new glycosidase inhibitors

A series of saccharidyl-triazoles structurally related to acarbose were prepared and tested as inhibitors of glycosidases. They share in common a 1,4,5-trisubstituted 1,2,3-triazole heterocycle as a functional element able to interact with the active site of the target enzymes. First, it was established that the heterocyclic core exhibits a moderate but highly selective α-glucosidase inhibitory activity. Then, it was confirmed that the inhibitory properties could be modulated by conjugation from one to five carbohydrate residues. The present study includes the regio- and stereocontrolled synthesis of novel non-fused 1,2,3-triazolo-pseudooligosaccharides as well as their evaluation as new glycosidase inhibitors.