(3aR,3bS,6aR,7aR)-2,2-dimethyl-hexahydrofuro[2',3':4,5]furo[2,3-d][1,3]dioxol-5-ol

Trifluoro-methanesulfonic acid (3aR,3bS,6R,6aS,7aR)-2,2-dimethyl-5-oxo-hexahydro-furo[2',3':4,5]furo[2,3-d][1,3]dioxol-6-yl ester

3,6-Anhydro-5-desoxy-1,2-O-isopropyliden-α-D-xylo-hex-5-enofuranose

1,2-O-isopropylidene-β-D-idurono-3,6-lactone

5-Brom-5-desoxy-1,2-O-isopropyliden-β-L-idofuranurono-6,3-lacton