In a DCC-mediated coupling 2, 3, 4, 6-tetra-O-acetyl-β-d-glucopyranosylamine and propiolic acid gave N-propynoyl-2, 3, 4, 6-tetra-O-acetyl-β-d-glucopyranosylamine which was transformed by 1, 3-dipolar cycloadditions with aromatic azides and nitrile-oxides to the corresponding O-peracetylated N-(β-d-glucopyranosyl)-1-substituted-1, 2, 3-triazole-4- carboxamides and N-(β-d-glucopyranosyl)-3-substituted-isoxazole-5-carboxamides, ...
