1-[(4S,5R)-5-(tert-Butyl-dimethyl-silanyloxymethyl)-4-(3-hydroxy-propyl)-4-trimethylsilanyloxy-tetrahydro-furan-2-yl]-5-methyl-1H-pyrimidine-2,4-dione

2-{3-[(2R,3S)-3-Hydroxy-2-hydroxymethyl-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl]-propyl}-isoindole-1,3-dione

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

methyl (3R,4R)-5-azido-2,5-dideoxy-α,β-pentofuranoside

methyl (3S,4R)-3,5-diazido-2,3,5-trideoxy-α,β-pentofuranoside