1-[2-Deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-β-D-arabino-pentodialdo-1,4-furanosyl]-2,4(1H,3H)-pyrimidinedione

1-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[2-Deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-5-O-[(1,1-dimethylethyl)diphenylsilyl]-2-fluoro-4-C-formyl-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

4-Amino-1-[4-C-(bromomethyl)-2-deoxy-2-fluoro-β-D-arabinofuranosyl]-2(1H)-pyrimidinone

4-Amino-1-[4-C-(bromomethyl)-2-deoxy-5-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-3-O-[(4-methoxyphenyl)diphenylmethyl]-β-D-arabinofuranosyl]-2(1H)-pyrimidinone

1-[4-C-(Bromomethyl)-2-deoxy-5-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-3-O-[(4-methoxyphenyl)diphenylmethyl]-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[4-C-(Bromomethyl)-2-deoxy-2-fluoro-3-O-[(4-methoxyphenyl)diphenylmethyl]-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

(6R,7S,8R,9R)-9-(Bromomethyl)-7-fluoro-7,8,9,10-tetrahydro-8-[(4-methoxyphenyl)diphenylmethoxy]-6,9-epoxy-2H,6H-pyrimido[2,1-b][1,3]oxazocin-2-one

1-[4-C-(Chloromethyl)-2-deoxy-2-fluoro-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

4-Amino-1-[4-C-(azidomethyl)-2-deoxy-2-fluoro-β-D-arabinofuranosyl]-2(1H)-pyrimidinone

4-Amino-1-[4-C-(azidomethyl)-2-deoxy-5-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-3-O-[(4-methoxyphenyl)diphenylmethyl]-β-D-arabinofuranosyl]-2(1H)-pyrimidinone

1-[4-C-(Azidomethyl)-2-deoxy-5-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-3-O-[(4-methoxyphenyl)diphenylmethyl]-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[4-C-(Azidomethyl)-2-deoxy-2-fluoro-3-O-[(4-methoxyphenyl)diphenylmethyl]-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

(6R,7S,8R,9R)-9-(Azidomethyl)-7-fluoro-7,8,9,10-tetrahydro-8-[(4-methoxyphenyl)diphenylmethoxy]-6,9-epoxy-2H,6H-pyrimido[2,1-b][1,3]oxazocin-2-one

4-[[Bis(4-methoxyphenyl)phenylmethyl]amino]-1-[4-C-(chloromethyl)-2-deoxy-2-fluoro-3-O-[(4-methoxyphenyl)diphenylmethyl]-β-D-arabinofuranosyl]-2(1H)-pyrimidinone

4-[[Bis(4-methoxyphenyl)phenylmethyl]amino]-1-[4-C-(chloromethyl)-2-deoxy-5-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-3-O-[(4-methoxyphenyl)diphenylmethyl]-β-D-arabinofuranosyl]-2(1H)-pyrimidinone

(6R,7S,8R,9R)-9-(Chloromethyl)-7-fluoro-7,8,9,10-tetrahydro-8-[(4-methoxyphenyl)diphenylmethoxy]-6,9-epoxy-2H,6H-pyrimido[2,1-b][1,3]oxazocin-2-one

1-[2-Deoxy-2-fluoro-3-O-[(4-methoxyphenyl)diphenylmethyl]-β-D-arabino-pentodialdo-1,4-furanosyl]-2,4(1H,3H)-pyrimidinedione

1-[2-Deoxy-5-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-3-O-[(4-methoxyphenyl)diphenylmethyl]-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

5-Amino-3-(3,6,7-trideoxy-α-L-lyxo-heptofuranosyl)thiazolo[4,5-d]pyrimidine-2,7(3H,6H)-dione