2,3,5-tri-O-benzoyl-α-D-ribofuranosyl azide

4-amino-1-[3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]thieno[2,3-d]pyrimidin-2-one

4-amino-1-[3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-methylthieno[2,3-d]pyrimidin-2-one

2-(4-aminoimidazo[4,5-d]pyridazin-1-yl)-5-(hydroxymethyl)oxolane-3,4-diol

dimethyl 1-[3,4-dibenzoyloxy-5-(benzoyloxymethyl)oxolan-2-yl]imidazole-4,5-dicarboxylate