6-Ethyl-4-β-D-ribofuranosyl[1,2,5]thiadiazolo[3,4-d]pyrimidine-5,7(4H,6H)-dione

6-Methyl-4-β-D-ribofuranosyl[1,2,5]thiadiazolo[3,4-d]pyrimidine-5,7(4H,6H)-dione

2-Amino-2'-azido-2',3'-dideoxyadenosine

3-[[9-[5-S-(2-Fluorophenyl)-5-thio-D-ribofuranosyl]-9H-purin-6-yl]amino]bicyclo[2.2.1]heptane-2-carboxylic acid

2'-Deoxy-2'-fluoro-3',5'-bis-O-(triphenylmethyl)-5-methyluridine

2'-Deoxy-N-[[3-[(dodecylamino)carbonyl]-2-pyrazinyl]carbonyl]-2',2'-difluorocytidine

1-(2-Deoxy-β-D-erythro-pentofuranosyl)-3,6-dihydro-2(1H)-pyrimidinone

Thymidine, 3'-azido-3'-deoxy-, 5-[4-[[(1S,2R)-2-hydroxy-3-[(2-methylpropyl)[(4-nitrophenyl)sulfonyl]amino]-1-(phenylmethyl)propyl]amino]-4-oxobutanoate]

6,6'-(1,4-Phenylene)bis[3-(2-deoxy-β-D-erythro-pentofuranosyl)furo[2,3-d]pyrimidin-2(3H)-one]

3,3'-Bis(2-deoxy-β-D-erythro-pentofuranosyl)[6,6'-bifuro[2,3-d]pyrimidine]-2,2'(3H,3'H)-dione

Uridine, 2'-deoxy-5-[3-(3,5-di-O-acetyl-2-deoxy-β-D-erythro-pentofuranosyl)-2,3-dihydro-2-oxofuro[2,3-d]pyrimidin-6-yl]-, 3',5'-diacetate

2'-Deoxy-5-[3-(2-deoxy-β-D-erythro-pentofuranosyl)-2,3-dihydro-2-oxofuro[2,3-d]pyrimidin-6-yl]uridine

5,5''-(1,2-Ethynediyl)bis[2'-deoxyuridine]

Uridine, 5,5''-(1,2-ethynediyl)bis[2'-deoxy-, 3',3''',5',5'''-tetraacetate

Rel-9-[(3S)-3-(Aminocarbonyl)-3-deoxy-3-methyl-α-D-threo-pentofuranosyl]-2-chloro-9H-purin-6-amine

(3'R)-3'-Deoxy-3'-(hydrazinylcarbonyl)-3'-methylcytidine

(3'R)-3'-Deoxy-5-fluoro-3'-(hydrazinylcarbonyl)-3'-methylcytidine

Rel-4-Amino-5-fluoro-1-[(2R,3R,3aR,6aS)-hexahydro-3-hydroxy-3a-methyl-4-oxofuro[3,4-b]furan-2-yl]-2(1H)-pyrimidinone

Rel-4-Amino-1-[(2R,3R,3aR,6aS)-hexahydro-3-hydroxy-3a-methyl-4-oxofuro[3,4-b]furan-2-yl]-2(1H)-pyrimidinone

Rel-6-Amino-1-[(3R)-3-deoxy-3-(hydroxymethyl)-3-methyl-β-D-erythro-pentofuranosyl]imidazo[4,5-e][1,3]diazepine-4,8(1H,7H)-dione