[2S,4S]-2-(tert-butyldiphenylsilyloxymethyl)-4-phenylsulfonyl-3,4-dihydro-2H-pyran

[4S,6S,1'R]-2-(tert-butyldiphenylsilyloxymethyl)-6-(1,2-dihydroxyethyl)-3,6-dihydro-2H-pyran

(3aS,5S,7S,7aS)-7-Benzenesulfonyl-5-(tert-butyl-diphenyl-silanyloxymethyl)-tetrahydro-furo[3,2-b]pyran-3-one

[1S,3S,5S,6S]-3-(tert-butyldiphenylsilyloxymethyl)-9-oxo-5-phenylsulfonyl-2,7-dioxabicyclo[4.3.0]nonane

[2R,3R,4S,6S,1'R]-3,4:1',2'-diisopropylidene-6-(tert-butyldiphenylsilyloxymethyl)-3,4-dihydroxy-2-(1,2-dihydroxyethyl)tetrahydro-2H-pyran

methyl [2R,3S,4R,6S,1'R]-3,4-isopropylidenedioxy-2-[(1,2-isopropylidenedioxy)ethyl]tetrahydroo-2H-pyran-6-carboxylate