N-Benzoyl-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-O-[(1,1-dimethylethyl)dimethylsilyl]-3'-O-methyladenosine

5-[(1E)-3-[[2-[Bis[2-[[5-[(3aS,4S,6aR)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-1-oxopentyl]amino]ethyl]amino]ethyl]amino]-3-oxo-1-propen-1-yl]-2'-deoxyuridine

5-Azido-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxyuridine

3'-[[N6-Acetyl-N2-[(1,1-dimethylethoxy)carbonyl]-D-lysyl-O-methyl-L-tyrosyl]amino]-3'-deoxy-N,N-dimethyladenosine

3'-[[N6-Acetyl-N2-[(1,1-dimethylethoxy)carbonyl]-L-lysyl-O-methyl-L-tyrosyl]amino]-3'-deoxy-N,N-dimethyladenosine

3'-[[N6-Acetyl-N2-[(1,1-dimethylethoxy)carbonyl]lysyl-O-methyl-L-tyrosyl]amino]-3'-deoxy-N,N-dimethyladenosine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-N-(2-methyl-1-oxopropyl)-2'-O-[(2-nitrophenyl)methyl]-3'-thioguanosine

3'-[[N6-Acetyl-N2-[(phenylmethoxy)carbonyl]lysyl-O-methyl-L-tyrosyl]amino]-3'-deoxy-N,N-dimethyladenosine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2'-O-[(1,1-dimethylethyl)dimethylsilyl]-5-iodouridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-5-bromouridine

5'-[(Benzo[b]thien-2-ylsulfonyl)amino]-5'-deoxyuridine

5'-[(Cyclopropylsulfonyl)amino]-5'-deoxyuridine

5'-[[(4-Acetyl-3,4-dihydro-2H-1,4-benzoxazin-6-yl)sulfonyl]amino]-5'-deoxyuridine

5'-[[[5-[2-Chloro-5-(trifluoromethyl)phenyl]-2-furanyl]methyl]amino]-5'-deoxyuridine

(2'R)-2'-Chloro-2'-deoxy-N-[(4-methoxyphenyl)diphenylmethyl]-2'-methylcytidine

5'-Deoxy-5'-[[3-[[[[4-(1,1-dimethylethyl)phenyl]amino]carbonyl]amino]propyl]amino]-N-methyladenosine

5'-[[(2R)-2-Amino-1-oxo-4-phenylbutyl]amino]-5'-deoxyuridine

(2'R)-2'-Chloro-2'-deoxy-2'-methylcytidine 5'-(tetrahydrogen triphosphate)

(2'R)-2'-Chloro-2'-deoxy-2'-methyladenosine

(2'R)-2'-Chloro-2'-deoxy-5-fluoro-2'-methyluridine