2',3'-Di-S-ethyl-5-methyl-2',3'-dithiouridine

3'-Azido-2',3'-dideoxy-2-fluoro-6-O-methylinosine

3'-Azido-2',3'-dideoxy-2-fluoroadenosine

3'-Azido-2-chloro-2',3'-dideoxyadenosine

3'-Azido-2-chloro-N-cyclopropyl-2',3'-dideoxyadenosine

3'-Azido-2-chloro-2',3'-dideoxy-6-O-methylinosine

2'-Amino-2'-deoxy-5'-O-methyluridine

2'-Azido-2'-deoxy-5'-O-methyluridine

4'-C-Azido-5'-deoxy-5'-iodo-5-methyl-2'-C-methyluridine

5'-Deoxy-5'-iodo-5-methyl-2'-C-methyluridine

4'-C-Azido-5'-deoxy-5'-iodo-2'-C-methyluridine

1-((2R,3R,4R,5S)-3,4-dihydroxy-5-(iodomethyl)-3-methyltetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione

2-Amino-N-cyclopropyl-2',3'-dideoxyadenosine

N-Ethyl-2',3'-dideoxyadenosine

Thymidine, 3'-deoxy-, 5'-(9H-fluoren-9-ylmethyl phosphonate)

Inosine, 2',3'-dideoxy-, 5'-(9H-fluoren-9-ylmethyl phosphonate)

Adenosine, 2',3'-dideoxy-, 5'-(9H-fluoren-9-ylmethyl phosphonate)

Thymidine, 5',5''',5''''',5'''''''-[[4,4'-bis[[(5'-deoxythymidin-5'-yl)amino]carbonyl][2,2'-bipyridine]-6,6'-diyl]bis[methyleneoxymethylene(6'-methyl[2,2'-bipyridine]-6,4,4'-triyl)bis(carbonylimino)]]tetrakis[5'-deoxy-

Adenosine, 5',5''',5''''',5'''''''-[[4,4'-bis[[(5'-deoxyadenosin-5'-yl)amino]carbonyl][2,2'-bipyridine]-6,6'-diyl]bis[methyleneoxymethylene(6'-methyl[2,2'-bipyridine]-6,4,4'-triyl)bis(carbonylimino)]]tetrakis[5'-deoxy-

1-[6-(Cyclopentylamino)-9H-purin-9-yl]-1-deoxy-2,3-O-(1-methylethylidene)-β-D-ribofuranuronamide