(3S,5R)-5-(3,4-Dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]dihydro-2,2(3H)-furandicarboxaldehyde

4-Amino-1-[2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-5-O-[(1,1-dimethylethyl)diphenylsilyl]-2-fluoro-4-C-1,2-propadien-1-yl-β-D-arabinofuranosyl]-2(1H)-pyrimidinone

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

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

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

1-[(5ξ)-2,6-Dideoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-4-C-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]-2-fluoro-α-L-xylo-hexofuranosyl]-2,4(1H,3H)-pyrimidinedione

4-Amino-1-(2-deoxy-4-C-ethyl-2-fluoro-β-D-arabinofuranosyl)-2(1H)-pyrimidinone

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

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

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

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

1-[4-C-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-5-O-[(1,1-dimethylethyl)diphenylsilyl]-2-fluoro-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

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