Abstract The syntheses of 3-amino-4-methyl-1-(β-D-ribofuranosyl)-1, 2, 4-triazolin-5-one (8a) and its 2′-deoxy analog 8b as well as 5-amino-2-methyl-1-(β-D-ribofuranosyl)-1, 2, 4- triazolin-3-one (12) have been accomplished. Compounds 8a and 8b were synthesized via glycosylation of 3-bromo-5-nitro-1, 2, 4-triazole which was followed by replacement in three steps of the 3-bromo function to yield 3-nitro-1-(2, 3, 5-tri-O-acetyl-β-D-ribofuranosyl)-1, 2, ...
