N'-[9-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-2-ethynyl-β-D-arabinofuranosyl]-8-bromo-6,9-dihydro-6-oxo-1H-purin-2-yl]-N,N-dimethylmethanimidamide

N'-[8-Bromo-9-(2-deoxy-2-ethynyl-β-D-arabinofuranosyl)-6,9-dihydro-6-oxo-1H-purin-2-yl]-N,N-dimethylmethanimidamide

N'-[8-Bromo-9-[2-deoxy-3,5-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-2-[2-(trimethylsilyl)ethynyl]-β-D-arabinofuranosyl]-6,9-dihydro-6-oxo-1H-purin-2-yl]-N,N-dimethylmethanimidamide

N'-[9-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-2-ethynyl-β-D-arabinofuranosyl]-8-bromo-6,9-dihydro-6-oxo-1H-purin-2-yl]-N,N-dimethylmethanimidamide

Benzimidazole, 5,6-dibromo-1-D-ribofuranosyl-, tribenzoate

1-(2-Deoxy-α-D-erythro-pentofuranosyl)-5-(trimethylgermyl)-2,4(1H,3H)-pyrimidinedione

1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-α-D-erythro-pentofuranosyl]-5-(trimethylgermyl)-2,4(1H,3H)-pyrimidinedione

1-[(2R,3aR,4R,5R,6aS)-4-[(1E,3R)-4-(3-Chlorophenoxy)-3-hydroxy-1-buten-1-yl]hexahydro-5-hydroxy-2H-cyclopenta[b]furan-2-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

2,4(1H,3H)-Pyrimidinedione, 1-(3-deoxy-3-(phosphonomethyl)-β-D-allofuranosyl)-

9-(3,5-Di-O-benzoyl-2-deoxy-4-C-ethynyl-2-fluoro-β-D-arabinofuranosyl)-9H-purine-2,6-diamine

1-[(2R,3aR,4R,5R,6aS)-4-[(1E,3R)-4-(3-Chlorophenoxy)-3-hydroxy-1-buten-1-yl]hexahydro-5-hydroxy-2H-cyclopenta[b]furan-2-yl]-5-iodo-2,4(1H,3H)-pyrimidinedione

1-[(2R,3aR,4R,5R,6aS)-4-[(1E,3R)-4-(3-Chlorophenoxy)-3-hydroxy-1-buten-1-yl]hexahydro-5-hydroxy-2H-cyclopenta[b]furan-2-yl]-2,4(1H,3H)-pyrimidinedione

2-Amino-7-(2-deoxy-4-C-ethynyl-2-fluoro-β-D-arabinofuranosyl)-5-fluoro-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one

7-(2-Deoxy-4-C-ethynyl-2-fluoro-β-D-arabinofuranosyl)-5-fluoro-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one

4-Amino-7-(2-deoxy-4-C-ethynyl-2-fluoro-β-D-arabinofuranosyl)-5-fluoro-1,7-dihydro-2H-pyrrolo[2,3-d]pyrimidin-2-one

7-(2-Deoxy-4-C-ethynyl-2-fluoro-β-D-arabinofuranosyl)-5-fluoro-7H-pyrrolo[2,3-d]pyrimidin-4-amine

2-Amino-9-(2-deoxy-4-C-ethynyl-2-fluoro-β-D-arabinofuranosyl)-1,9-dihydro-6H-purin-6-one

9-(2-Deoxy-4-C-ethynyl-2-fluoro-β-D-arabinofuranosyl)-2-fluoro-1,9-dihydro-6H-purin-6-one

1-[(2R,4R,5R)-4,5-Bis(acetyloxy)-3-bromotetrahydro-5-[2-(triethylsilyl)ethynyl]-2-furanyl]-2,4(1H,3H)-pyrimidinedione

1-[(5S)-4,5-Dihydro-3-hydroxy-5-(hydroxymethyl)-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione