(1S,6R,8R,9R)-1-hydroxy-6-hydroxymethyl-9-methoxy-8-(thymin-1-yl)-4,7-dioxabicyclo[4.3.0]nonane

(1R,3R,4R,7S)-1-(4,4'-dimethoxytrityl)oxymethyl-7-hydroxy-7-(2-hydroxyethyl)-3-(thymin-1-yl)-2,5-dioxabicyclo[2.2.1]heptane

(1R,3R,4R,7S)-1-(4,4'-dimethoxytrityl)oxymethyl-7-hydroxy-7-(2-levulinoyloxyethyl)-3-(thymin-1-yl)-2,5-dioxabicyclo[2.2.1]heptane

Toluene-4-sulfonic acid (2S,3S,4R,5R)-3-allyl-3-benzyloxy-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-4-methoxy-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-2-ylmethyl ester

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