2,4(1H,3H)-Pyrimidinedione, 1-[(6R,8R,9R)-4-amino-9-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-6-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-2,2-dioxido-1,7-dioxa-2-thiaspiro[4.4]non-3-en-8-yl]-5-ethyl-3-methyl-

2,4(1H,3H)-Pyrimidinedione, 1-[(6R,8R,9R)-4-amino-9-(1,1-dimethylbutoxy)-6-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-2,2-dioxido-1,7-dioxa-2-thiaspiro[4.4]non-3-en-8-yl]-

Uridine, 2'-deoxy-6-ethynyl-

Uridine, 2'-deoxy-3',5'-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-6-[(trimethylsilyl)ethynyl]-

Uridine, 6-(phenylethynyl)-

2,4(1H,3H)-Pyrimidinedione, 1-[(6R,8R,9R)-9-(benzoyloxy)-6-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-2,2-dioxido-1,7-dioxa-2-thiaspiro[4.4]non-3-en-8-yl]-3,5-dimethyl-

2,4(1H,3H)-Pyrimidinedione, 1-[(6R,8R,9R)-6-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-2,2-dioxido-9-[[tris(1,1-dimethylethyl)silyl]oxy]-1,7-dioxa-2-thiaspiro[4.4]non-3-en-8-yl]-3,5-dimethyl-

1-[(1S,3R,4S,7R)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-5-ethyl-7-hydroxy-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1S,3R,4S,7R)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-hydroxy-5-[1-oxo-4-(1-pyrenyl)butyl]-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1S,3R,4S,7R)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-hydroxy-5-(1-pyrenylcarbonyl)-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1S,3R,4S,7R)-5-Acetyl-1-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-hydroxy-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

2,4(1H,3H)-Pyrimidinedione, 1-[(6R,8R,9R)-9-[[(3,3-dimethylbutyl)diphenylsilyl]oxy]-6-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-2,2-dioxido-1,7-dioxa-2-thiaspiro[4.4]non-3-en-8-yl]-3,5-dimethyl-

5-(2-[2,2'-Bipyridin]-6-ylethynyl)-7-(2-deoxy-β-D-erythro-pentofuranosyl)-7H-pyrrolo[2,3-d]pyrimidin-4-amine

1-[2-Deoxy-5-O-(4-methylbenzoyl)-α-L-threo-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

5-Methyl-1-[(3aS,7R,7aR)-octahydro-3a,7-dihydroxy-2-benzofuranyl]-2,4(1H,3H)-pyrimidinedione

5-Methyl-1-[(3aS,7R,7aR)-octahydro-3a,7-bis[(trimethylsilyl)oxy]-2-benzofuranyl]-2,4(1H,3H)-pyrimidinedione

1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-L-erythro-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

(2'R)-2'-Deoxy-N-[(dimethylamino)methylene]-2'-fluoro-2'-methylcytidine

1-[6-Amino-2-[2-[(2R,3S)-2,3-dihydroxy-2,6,6-trimethylbicyclo[3.1.1]hept-3-yl]ethynyl]-9H-purin-9-yl]-1-deoxy-N-ethyl-β-D-ribofuranuronamide

6-Nitro-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-1H-benzimidazole