5-O-benzyl-1,6,7-trideoxy-3,4-O-isopropylidene-4-C-methyl-keto-D-arabino-2-heptulose

3-O-benzyl-1,2-dideoxy-4,5-isopropylidene-4-methyl-D-manno-heptitol

7-O-(t-butyldiphenylsilyl)-1,2-dideoxy-5,6-O-isopropylidene-4-C-methyl-keto-D-arabino-3-heptulose