3-C-Allyl-1,2-di-O-acetyl-3,5-di-O-benzyl-D-ribofuranose

(1S,5R,6R,8R)-5-Hydroxy-6-hydroxymethyl-8-(thymin-1-yl)-2,7-dioxabicyclo[3.3.0]octane

3'-C-(3-benzoyloxypropyl)thymidine

(2R,3R,3aS,9aR)-3-Allyl-3-benzyloxy-2-benzyloxymethyl-7-methyl-2,3,3a,9a-tetrahydro-furo[2',3':4,5]oxazolo[3,2-a]pyrimidin-6-one

1-[3-C-(3-benzoyloxypropyl)-3,5-di-O-benzyl-β-D-ribofuranosyl]thymine

(1S,5R,6R,8R)-5-Benzyloxy-6-benzyloxymethyl-8-(thymin-1-yl)-2,7-dioxabicyclo[3.3.0]octane

(1S,5R,6R,8R)-6-(4,4'-Dimethoxytrityloxymethyl)-5-hydroxy-8-(thymin-1-yl)-2,7-dioxabicyclo[3.3.0]octane

1-[3,5-Di-O-benzyl-3-C-(2-hydroxyethyl)-β-D-arabinofuranosyl]thymine

1-{3,5-Di-O-benzyl-2-O-(p-tolylsulfonyl)-3-C-[3-(p-tolylsulfonyloxy)propyl]-β-D-ribofuranosyl}thymine

3'-C-(3-benzoyloxypropyl)-5'-O-(4,4'-dimethoxytrityl)thymidine

1-[3,5-Di-O-benzyl-3-C-(2-hydroxyethyl)-β-D-ribofuranosyl]thymine

Toluene-4-sulfonic acid 2-[(2R,3S,4S,5R)-3-benzyloxy-2-benzyloxymethyl-4-hydroxy-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl]-ethyl ester

Benzoic acid 3-[(2R,3R,4R,5R)-3-benzyloxy-2-benzyloxymethyl-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-4-pentafluorophenyloxythiocarbonyloxy-tetrahydro-furan-3-yl]-propyl ester