This work describes the syntheses of O-protected aminoglycosides as an important block building for the preparation of potential bioactive pseudodisaccharide. The new O-protected methyl 3-amino-3-deoxy-alpha-D-glycopyranoside 4 and methyl 2-amino-2-deoxy-alpha-D-glycopyranoside 5 were prepared, respectively, in five and four steps. All compounds were obtained in good yield and characterized by spectral data (¹H and 13C NMR, MS, IR) and elemental analysis.
aminoglycosides; amino-sugars; O-protected methyl 3-amino-3-deoxy-alpha-D-glycopyranoside; O-protected methyl 2-amino-2-deoxy-alpha-D-glycopyranoside
