Hybrid sugars as glycosidase inhibitors en route to 2-deoxy-2-amino C-glycosyl amino acids

Sugar-azasugar hybrid molecules made up of d-galactose with nojirimycin-δ-lactam and pyrrolidine analogues are synthesized using intramolecular cyclization as a key step from 2-nitro galactal and found to be glycosidase inhibitors. Further, some of the intermediate compounds are converted into 2-deoxy-2-amino C-glycosyl glycines and C-glycosyl alanines.