5-[18-Azido-19-[3-[[[2-[[5-[(3aS,4S,6aR)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-1-oxopentyl]amino]ethyl]amino]carbonyl]phenoxy]-5,12-dioxo-14,17-dioxa-4,11-diazanonadec-1-yn-1-yl]-2',3'-dideoxyuridine 5'-(tetrahydrogen triphosphate)

2'-C-Methyladenylyl-(5'→5')-2'-C-methyladenosine

P-[(2,2-Dimethyl-1-oxopropoxy)methyl]-2'-C-methyladenylyl-(5'→5')-2'-C-methyladenosine

P-[2-[[(Acetyloxy)methoxy]methyl]-3-ethoxy-2-(ethoxycarbonyl)-3-oxopropyl]-2'-C-methyladenylyl-(5'→5')-2'-C-methyladenosine

2'-C-Methyluridylyl-(5'→5')-2'-C-methyluridine

(5R)-5-[(2,5-Dimethoxyphenyl)thio]-5,6-dihydro-5-methyluridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-fluoro-5-methyl-2-thiouridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-[(2,2-dimethyl-1-oxopropoxy)methyl]-5-methyluridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-5-[(2,5-dimethoxyphenyl)thio]-5,6-dihydro-5-methyluridine

(3'Z)-3'-[(Acetyloxy)imino]-2',3'-dideoxy-5'-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-fluorouridine

(3'E)-3'-[(Acetyloxy)imino]-2',3'-dideoxy-5'-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-fluorouridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-5-bromo-2'-O-methyluridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-5-[(2,5-dimethoxyphenyl)thio]-2'-O-[(1,1-dimethylethyl)dimethylsilyl]-5,6-dihydro-5-methyluridine

5'-O-(9-[1,1'-Biphenyl]-4-yl-2,7-dimethyl-9H-xanthen-9-yl)-2'-O-(2-methoxyethyl)-5-methyluridine

5'-O-[9-(4-Bromophenyl)-2,7-dimethyl-9H-xanthen-9-yl]-2'-O-(2-methoxyethyl)-5-methyluridine

5'-O-(2,7-Dimethyl-9-phenyl-9H-xanthen-9-yl)-2'-O-(2-methoxyethyl)-5-methyluridine

5'-O-[2,7-Dimethyl-9-(4-nitrophenyl)-9H-xanthen-9-yl]-2'-O-(2-methoxyethyl)-5-methyluridine

5'-O-[9-[4-(1,1-Dimethylethyl)phenyl]-2,7-dimethyl-9H-xanthen-9-yl]-2'-O-(2-methoxyethyl)-5-methyluridine

2'-O-(2-Cyanoethyl)-4-O-(2,6-dimethylphenyl)-2-thiouridine

N-Benzoyl-5'-O-[9-(4-bromophenyl)-2,7-dimethyl-9H-xanthen-9-yl]-2'-O-(2-methoxyethyl)-5-methylcytidine