(2S,5R)-5-(6-Amino-9H-purin-9-yl)tetrahydro-2-(hydroxymethyl)-2-furancarbonitrile

(2S,5R)-5-(3,4-Dihydro-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-2-(hydroxymethyl)-2-furancarbonitrile

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

(2S,5R)-5-(2-Amino-1,6-dihydro-6-oxo-9H-purin-9-yl)tetrahydro-2-(hydroxymethyl)-2-furancarbonitrile

1-(4-Amino-5-fluoro-1,2-dihydro-2-oxo-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-1,2-dideoxy-2-fluoro-4-C-(hydroxymethyl)-α-L-xylofuranurononitrile

1-(4-Amino-2,5-difluoro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-1,2-dideoxy-2-fluoro-4-C-(hydroxymethyl)-α-L-xylofuranurononitrile

1-(4-Amino-5-fluoro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-1,2-dideoxy-2-fluoro-4-C-(hydroxymethyl)-α-L-xylofuranurononitrile

1-(4-C-Cyano-2-deoxy-2-methyl-β-D-arabinofuranosyl)-5-methyl-2,4(1H,3H)-pyrimidinedione

1-(4-Amino-5-fluoro-2-oxo-1(2H)-pyrimidinyl)-,2-dideoxy-2-fluoro-4-C-(hydroxymethyl)-α-Lxylofuranurononitrile

1-(6-Amino-2,3-dihydro-2-oxo-9H-purin-9-yl)-,2-dideoxy-2-fluoro-4-C-(hydroxymethyl)-α-Lxylofuranurononitrile

1-(6-Amino-9H-purin-9-yl)-1,2-dideoxy-2-fluoro-4-C-(hydroxymethyl)-α-L-xylofuranurononitrile

1-(6-Amino-9H-purin-9-yl)-1,2-dideoxy-4-C-(hydroxymethyl)-α-L-threo-pentofuranurononitrile

1,2-Dideoxy-1-(2,6-diamino-9H-purin-9-yl)-2-fluoro-4-C-(hydroxymethyl)-α-L-xylofuranurononitrile

1,2-Dideoxy-1-(1,6-dihydro-6-oxo-9H-purin-9-yl)-2-fluoro-4-C-(hydroxymethyl)-α-L-xylofuranurononitrile

1,2-Dideoxy-2-fluoro-1-(5-fluoro-3,4-dihydro-,4-dioxo-1(2H)-pyrimidinyl)-4-C-(hydroxymethyl)-α-L-xylofuranurononitrile

1,2-Dideoxy-1-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-2-fluoro-4-C-(hydroxymethyl)-α-L-xylofuranurononitrile

1,2-Dideoxy-2-fluoro-1-(5-fluoro-3,4-dihydro-4-oxo-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-4-C-(hydroxymethyl)-α-L-xylofuranurononitrile

1-[4-C-Cyano-2,3,5-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-4-(1H-1,2,4-triazol-1-yl)-2(1H)-pyrimidinone

1-[4-C-Cyano-2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-methyl-5-O-(trimethylsilyl)-β-D-arabinofuranosyl]-5-methyl-2,4(1H,H)-pyrimidinedione

1-[4-C-Cyano-2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-methyl-β-D-arabinofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione