5,6-O-isopropylidene-D-fructose

(-)-arabino-(4S,5S,6S)-hept-1-ene-4,5,6,7-tetrol 4,5-carbonate

3-deoxy-D-gluco-heptono-lactone

D-fructose diethyl dithioacetal

methyl 5-deoxy-2,3-O-isopropylidene-α-D-lyxo-hexodialdo-1,4-furanoside oxime