1-(3-C-allyl-3-O-benzyl-4-C-tosyloxymethyl-5-O-(4,4'-dimethoxytrityl)-β-D-ribofuranosyl)thymine

3,5-di-O-benzyl-4-C-(hydroxymethyl)-1,2-di-O-isopropylidene-3-C-vinyl-α-D-ribofuranose

3,5-di-O-benzyl-1,2-O-isopropylidene-4-C-(p-toluenesulfonyloxymethyl)-3-C-vinyl-α-D-ribofuranose

3-O-benzyl-1,2-O-isopropylidene-3-C-vinyl-α-D-allofuranose

(3aR,5R,6R,6aR)-6-Benzyloxy-5-(2,2-dimethyl-[1,3]dioxolan-4-yl)-2,2-dimethyl-6-vinyl-tetrahydro-furo[2,3-d][1,3]dioxole