2',5'-Bis-O-[dimethyl(1,1,2-trimethylpropyl)silyl]-3'-C-ethynylcytidine

3'-C-Ethynyl-2'-O-[tris(1-methylethyl)silyl]cytidine

3'-C-Ethynyl-2',5'-bis-O-[tris(1-methylethyl)silyl]cytidine

Adenosine pyrophosphate, 5'→5'-ester with 5-bromouridine

N-[2-(Dimethylamino)acetyl]-3'-C-ethynyl-5'-O-[tris(1-methylethyl)silyl]cytidine

N-[2-(Dimethylamino)acetyl]-5'-O-[(1,1-dimethylethyl)dimethylsilyl]-3'-C-ethynylcytidine

3'-Azido-2',3'-dideoxy-6-thioguanosine 5'-(tetrahydrogen triphosphate)

5-(5-Azidopentyl)-2'-deoxyuridine 5'-(tetrahydrogen triphosphate)

1-[2,5-Anhydro-3-O-[(1,1-dimethylethyl)dimethylsilyl]-4-C-(hydroxymethyl)-α-L-lyxofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[2,5-Anhydro-4-C-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-3-O-[(1,1-dimethylethyl)dimethylsilyl]-α-L-lyxofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

5-(5-Azidopentyl)-2'-deoxyuridine

1-[2-Deoxy-3,5-O-[(S)-phenylmethylene]-β-D-threo-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(2R,5aR,7R,8aR)-2-Cyclohexyl-3-ethoxyhexahydro-3-oxido-5H-furo[3,2-e][1,4,2]dioxaphosphepin-7-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(2R,5aR,7R,8aR)-3-Ethoxyhexahydro-3-oxido-2-phenyl-5H-furo[3,2-e][1,4,2]dioxaphosphepin-7-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(5aR,7R,8aR)-3-Ethoxyhexahydro-2,2-dimethyl-3-oxido-5H-furo[3,2-e][1,4,2]dioxaphosphepin-7-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[3,5-O-[(S)-Cyclohexylmethylene]-2-deoxy-β-D-threo-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(5aR,7R,8aR)-Hexahydro-3-hydroxy-2,2-dimethyl-3-oxido-5H-furo[3,2-e][1,4,2]dioxaphosphepin-7-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(2S,3aS,4S,6S,6aS)-6-[(Benzoyloxy)methyl]tetrahydro-2-oxidofuro[3,4-d]-1,3,2-dioxathiol-4-yl]-2,4(1H,3H)-pyrimidinedione

1-[(2R,5aR,7R,8aR)-2-Cyclohexylhexahydro-3-hydroxy-3-oxido-5H-furo[3,2-e][1,4,2]dioxaphosphepin-7-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(2R,5aR,7R,8aR)-Hexahydro-3-hydroxy-3-oxido-2-phenyl-5H-furo[3,2-e][1,4,2]dioxaphosphepin-7-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione