1,3-dideoxy-4,5-O-isopropylidene-D-threo-hexulose diethyl dithioacetal

1,3-dideoxy-4,5-O-isopropylidene-D-arabino-heptulose diethyl dithioacetal

1,3-dideoxy-4,5:6,7-di-O-isopropylidene-D-arabino-heptulose

4,6-dideoxy-2,3-O-isopropylidene-aldehydo-D-threo-hexos-5-ulose 5-(diethyl dithioacetal)

methyl 4,5,7-tri-O-acetyl-1,3-dideoxy-α-D-arabino-heptulopyranoside