(8R,8aR,11aR,12R)-2,3,8,8a,11a,12-Hexahydro-10,10-dimethyl-3-thioxo-8,12-epoxy-1H,7H-[1,3]dioxolo[6,7][1,3]diazocino[1,2,3-cd]purin-1-one

6-Amino-3,9-dihydro-3-[2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-2H-purin-2-one

Uridine, 5-bromo-2′,3′-O-(1-methylethylidene)-, 5′-(4-fluorobenzoate)

(6R,7R,8S,9R)-7,8,9,10-Tetrahydro-7,8-dihydroxy-6,9-epoxy-5H,6H-1,2,5a,10a-tetraazacyclooct[cd]inden-5-one

6,9-Epoxy-5H,6H-1,2,5a,10a-tetraazacyclooct[cd]inden-5-one, 7,8-bis(benzoyloxy)-7,8,9,10-tetrahydro-, (6R,7R,8R,9R)-

5H-1,2,3-Triazolo[4,5-b]pyridin-5-one, 1,4-dihydro-4-[5-O-[(4-methylphenyl)sulfonyl]-2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-

5H-1,2,3-Triazolo[4,5-b]pyridin-5-one, 1,4-dihydro-4-[2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-

Triphosphoric acid, P-[[(2R,5S)-5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-2-furanyl]methyl] ester

Triphosphoric acid, P-[[(2R,5S)-5-(5-fluoro-3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-2-furanyl]methyl] ester

1-[(2S,5R)-5-[[[(1,1-Dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-2-furanyl]-5-fluoro-2,4(1H,3H)-pyrimidinedione

2,4(1H,3H)-Pyrimidinedione, 1-[3-deoxy-5-O-[(1,1-dimethylethyl)diphenylsilyl]-2-Se-phenyl-2-seleno-β-L-erythro-pentofuranosyl]-

2(1H)-Pyrimidinone, 4-amino-1-[3-deoxy-5-O-[(1,1-dimethylethyl)diphenylsilyl]-2-Se-phenyl-2-seleno-β-L-erythro-pentofuranosyl]-

1-(3,5-Di-O-benzoyl-2-deoxy-β-L-erythro-pentofuranosyl)-5-iodo-3-[(4-methylphenyl)sulfonyl]-2,4(1H,3H)-pyrimidinedione

1-(3,5-Di-O-benzoyl-2-deoxy-β-L-erythro-pentofuranosyl)-5-methyl-3-[(4-methylphenyl)sulfonyl]-2,4(1H,3H)-pyrimidinedione

5,8-Epoxy-4H-imidazo[5,1-d][1,3,5,2]dioxazaphosphecine-12-carboxamide, 5,6,7,8-tetrahydro-2,6,7-trihydroxy-, 2-oxide, (5R,6S,7R,8R)-

3-β-D-Ribofuranosylimidazo[4,5-e][1,3]oxazine-5,7(3H,6H)-dione

5-Azacytidine, adenylyl-(3′→5′)-

5-Azacytidine, guanylyl-(3′→5′)-

Uridine, cytidylyl-(3′→5′)-5-bromo-

Uridine, cytidylyl-(3′→5′)-5-methyl-