1-[(2R,4S,5R)-5-Benzoyl-4-(tert-butyl-dimethyl-silanyloxy)-5-(tert-butyl-diphenyl-silanyloxymethyl)-tetrahydro-furan-2-yl]-5-methyl-1H-pyrimidine-2,4-dione

4'-methoxycarbonylthymidine

(2R,3S,5R)-3-(tert-Butyl-dimethyl-silanyloxy)-2-(tert-butyl-diphenyl-silanyloxymethyl)-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-2-carboxylic acid

4-Amino-1-[(2R,4S,5R)-4-(tert-butyl-dimethyl-silanyloxy)-5-(tert-butyl-diphenyl-silanyloxymethyl)-5-methoxymethyl-tetrahydro-furan-2-yl]-5-methyl-1H-pyrimidin-2-one

3'-O-tert-butyldimethylsilyl-5'-O-tert-butyldiphenylsilyl-4'-C-carboxymethylthymidine