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

3-C-(bromomethyl)-3-deoxy-1,2:5,6-di-O-isopropylidene-α-D-allofuranose

5-O-(3-benzoylpropionyl)-3-deoxy-3-bromomethyl-1,2-di-O-acetyl-D-ribofuranose