2'-Deoxyguanylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-3'-amino-2',3'-dideoxyguanosine

2'-Deoxyguanylyl-(3'→5')-2'-deoxycytidylyl-(3'→5')-3'-amino-2',3'-dideoxycytidine

2'-Deoxyguanylyl-(3'→5')-2'-deoxycytidylyl-(3'→5')-2'-deoxycytidylyl-(3'→5')-3'-amino-2',3'-dideoxycytidine

3'-Amino-N-benzoyl-2',3'-dideoxycytidine

2'-Deoxyguanylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-2'-deoxyguanylyl-(3'→5')-3'-amino-2',3'-dideoxyguanosine

2'-Deoxyguanylyl-(3'→5')-2'-deoxycytidylyl-(3'→5')-2'-deoxycytidylyl-(3'→5')-2'-deoxycytidylyl-(3'→5')-3'-amino-2',3'-dideoxycytidine

3',5'-O-[Bis(1,1-dimethylethyl)silylene]-2'-chloro-2'-deoxy-5-methyluridine

3',5'-O-(Diethylsilylene)-5-methyluridine

3'-Azido-2',3'-dideoxy-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-2-thiouridine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-2'-[methyl(1-pyrenylmethyl)amino]-2-thiouridine

6-S-(2-Cyanoethyl)-2'-deoxy-3',5'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-phenoxyacetyl)-6-thioguanosine

Glycine, N-(1-oxo-2-propylpentyl)-, 5'-ester with 5-fluorouridine

2'-O-[2-[(Aminocarbonyl)amino]cyclohexyl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-5-methyluridine

3'-O-(2-Methoxycyclohexyl)-5-methyluridine

2'-O-(2-Methoxycyclohexyl)-5-methyluridine

2'-Deoxy-2'-fluoro-5'-O-(hydroxymercaptophosphinyl)-P-thiouridylyl-(3'→5')-adenylyl-(3'→5')-2'-O,4'-C-methyleneadenylyl-(3'→5')-2'-O-methyl-P-thiouridylyl-(3'→5')-2'-O,4'-C-methyleneadenylyl-(3'→5')-2'-O-methyl-P-thiouridylyl-(3'→5')-2'-O,4'-C-methyleneadenosine

2'-Deoxy-2'-fluoro-5'-O-(hydroxymercaptophosphinyl)cytidylyl-(3'→5')-2'-O-methyl-P-thiocytidylyl-(3'→5')-2'-O,4'-C-methyleneadenylyl-(3'→5')-2'-O-methyl-P-thiouridylyl-(3'→5')-cytidylyl-(3'→5')-2'-O,4'-C-methylene-P-thiouridylyl-(3'→5')-2'-O-methylcytidine

Benzimidazole, 5,6-dichloro-1-ribofuranosyl-

5'-O-[(1,1-Dimethylethyl)dimethylsilyl]-8-methyladenosine

2'-Deoxy-4'-C-ethyl-5-iodouridine