5'-(3-benzoylpropionyl)-3'-deoxy-3'-dihydroxyphosphinylmethyl-2'-O-acetyl uridine pyridinium salt

5,6-anhydro-3-C-benzyloxymethyl-3-deoxy-1,2-O-isopropylidene-α-D-allofuranose

3-deoxy-3-bromomethyl-1,2-O-isopropylidene-α-D-ribofuranose

5'-(benzoylpropionyl)-3'-deoxy-3'-diisopropoxyphosphinylmethyl-2'-O-acetyl uridine

5-O-(3-benzoylpropionyl)-3-deoxy-3-bromomethyl-1,2-O-isopropylidene-α-D-ribofuranose