methyl 2-<2,3-O-isopropylidene-5-O-(t-butyldimethylsilyl)-β-D-ribofuranosyl>-2-furfurylideneacetate

methyl 2-(2,3-O-isopropylidene-β-D-ribofuranosyl)-2-furfurylideneacetate

methyl 3,6-anhydro-4,5-O-isopropylidene-D-glycero-D-altro-heptonate

[(3aR,4R,6S,6aS)-6-(tert-Butyl-dimethyl-silanyloxymethyl)-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl]-hydroxy-acetic acid methyl ester

(E)-Ethyl (4S,5R,6R)-7-Dimethyl-t-butylsiloxy-6-hydroxy-4,5-O-isopropylidene-2-methylhept-2-enoate