5-amino-1-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)imidazole-4-carboxylic acid benzyl ester

N1-(2',3'-O-isopropylidene-β-D-ribofuranosyl)-4-ethoxycarbonyl-5-aminoimidazole

ethyl 5-((((ethoxycarbonyl)imino)(methylthio)methyl)amino)-1-((3aR,4R,6R,6aR)-6-(hydroxymethyl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)-1H-imidazole-4-carboxylate

ethyl 5-(3-(ethoxycarbonyl)thioureido)-1-((3aR,4R,6R,6aR)-6-(hydroxymethyl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)-1H-imidazole-4-carboxylate

5-amino-3-((3aR,4R,6R,6aR)-6-(hydroxymethyl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)imidazo[4,5-d][1,3]oxazin-7(3H)-one