1-[6-Amino-2-[2-(1-hydroxy-2-methylcyclohexyl)ethynyl]-9H-purin-9-yl]-1-deoxy-N-ethyl-β-D-ribofuranuronamide

2-Amino-N-methyladenosine

Uridine, 5'-O-[bis(4-methoxyphenyl)phenylmethyl]-5-([2,2'-bipyridin]-6-ylethynyl)-2'-deoxy-

1-[6-Amino-2-[2-(4-ethyl-1-hydroxycyclohexyl)ethynyl]-9H-purin-9-yl]-1-deoxy-N-ethyl-β-D-ribofuranuronamide

1-(3,5-Di-O-acetyl-2-deoxy-β-D-erythro-pentofuranosyl)-5,6-dimethyl-1H-benzimidazole

Uridine, 2'-deoxy-5-[[4-(heptyloxy)phenyl]ethynyl]-

1-(2-Deoxy-2-fluoro-β-D-ribofuranosyl)-4-nitro-1H-benzimidazole

4-[2-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-1,2,3,4-tetrahydro-2,4-dioxo-5-pyrimidinyl]ethynyl]-3,6-dihydro-2,2,6,6-tetramethyl-1(2H)-pyridinyloxy

Uridine, 2'-deoxy-2'-ethynyl-, 3',5'-diacetate

1-(2,3,5-Tri-O-acetyl-α-D-ribofuranosyl)-1H-benzotriazole

1-(2,3,5-Tri-O-acetyl-β-D-ribofuranosyl)-1H-benzotriazole

Uridine, 5-[(4-fluorophenyl)ethynyl]-2'-O-methyl-

Adenosine, 2-ethynyl-2',3'-O-(1-methylethylidene)-, 5'-[[(2S)-2-[[(1,1-dimethylethoxy)carbonyl]amino]-4-(methylthio)-1-oxobutyl]sulfamate]

1-Deoxy-1-[6-[[(4-iodo-2-pyridinyl)methyl]amino]-2-(2-phenylethynyl)-9H-purin-9-yl]-N-methyl-β-D-ribofuranuronamide

1-Deoxy-1-[6-[[[2-(dimethylamino)-7-iodo-5-benzoxazolyl]methyl]amino]-2-(2-phenylethynyl)-9H-purin-9-yl]-N-methyl-2,3-O-(1-methylethylidene)-β-D-ribofuranuronamide

6-Chloro-9-(2,3,5-tri-O-benzoyl-3-C-ethynyl-β-D-ribofuranosyl)-9H-purine

6-S-(1-Methylethyl)-6-thioguanosine

6-S-(1-Methylpropyl)-6-thioguanosine