2'-Deoxy-5'-O-(5,5-difluoro-2-oxido-1,3,2-dioxaphosphorinan-2-yl)-5-fluorouridine

3'-[(Aminocarbonyl)amino]-3'-deoxy-2',5'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-methyladenosine

3'-Amino-3'-deoxy-2',5'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-methyladenosine

Adenosine, 8-[(4-chlorophenyl)ethynyl]-

8-[2-[4-(Trifluoromethyl)phenyl]ethynyl]adenosine

8-[2-(4-Acetylphenyl)ethynyl]adenosine

3'-[(Aminocarbonyl)amino]-3'-deoxy-N-methyladenosine

8-[2-[4-(Diethylamino)phenyl]ethynyl]adenosine

8-[2-(4-Methoxyphenyl)ethynyl]adenosine

Guanosine, 8-[(4-chlorophenyl)ethynyl]-

8-[2-[4-(Trifluoromethyl)phenyl]ethynyl]guanosine

8-[2-(4-Acetylphenyl)ethynyl]guanosine

8-[2-[4-(Diethylamino)phenyl]ethynyl]guanosine

β-D-Ribofuranuronamide, 1-deoxy-N-ethyl-1-[6-(ethylamino)-2-[(4-methoxyphenyl)ethynyl]-9H-purin-9-yl]-

5-[2-(2-Pyridinyl)ethynyl]-1-[(2R,3R,4R,5R)-tetrahydro-4-hydroxy-5-(hydroxymethyl)-3-methoxy-2-furanyl]-2,4(1H,3H)-pyrimidinedione

1-[(2R,3R,4R,5R)-4-(Acetyloxy)-5-[(acetyloxy)methyl]tetrahydro-3-methoxy-2-furanyl]-5-[2-(2-pyridinyl)ethynyl]-2,4(1H,3H)-pyrimidinedione

β-D-Ribofuranuronamide, 1-[2-[(1-aminocyclohexyl)ethynyl]-6-(ethylamino)-9H-purin-9-yl]-1-deoxy-N-ethyl-

1-Deoxy-N-ethyl-1-[6-(ethylamino)-2-[2-(1-hydroxycyclohexyl)ethynyl]-9H-purin-9-yl]-β-D-ribofuranuronamide

β-D-Ribofuranuronamide, 1-deoxy-N-ethyl-1-[6-(ethylamino)-2-[(1-hydroxycyclopentyl)ethynyl]-9H-purin-9-yl]-

β-D-Ribofuranuronamide, 1-[2-[(1-cyclohexen-1-yl)ethynyl]-6-(ethylamino)-9H-purin-9-yl]-1-deoxy-N-ethyl-