2',5'-Dideoxy-N,N-bis[(1,1-dimethylethoxy)carbonyl]-5'-[[(1,1-dimethylethoxy)carbonyl][[[5-[(3aS,4S,6aR)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-1-oxopentyl]amino]sulfonyl]amino]-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-fluoroadenosine

2'-Deoxy-N,N-bis[(1,1-dimethylethoxy)carbonyl]-3',5'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-fluoroadenosine

Thymidine, 5'-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3'-[3-(4-morpholinyl)propyl N,N-bis(1-methylethyl)phosphoramidite]

5'-Amino-2',3',5'-trideoxy-2'-fluoroadenosine

5'-[(Aminosulfonyl)amino]-2',3',5'-trideoxy-2'-fluoroadenosine

2'-Deoxy-3',5'-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-fluoro-2-iodoadenosine

2',5'-Dideoxy-N,N-bis[(1,1-dimethylethoxy)carbonyl]-5'-[[(1,1-dimethylethoxy)carbonyl][[[2-(methoxymethoxy)benzoyl]amino]sulfonyl]amino]-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-fluoroadenosine

5'-[(Aminosulfonyl)[(1,1-dimethylethoxy)carbonyl]amino]-2',5'-dideoxy-N,N-bis[(1,1-dimethylethoxy)carbonyl]-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-fluoroadenosine

2'-Deoxy-N,N-bis[(1,1-dimethylethoxy)carbonyl]-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-fluoroadenosine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-2'-deoxy-N-[(dimethylamino)methylene]-8-ethynyladenosine

3-Benzoyl-1-(3,5-di-O-benzoyl-2-deoxy-2-fluoro-β-D-arabinofuranosyl)-2,4(1H,3H)-pyrimidinedione

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

(2'R)-2'-Chloro-2'-deoxy-6-O-ethyl-2'-fluoroguanosine

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

(2'R)-2-Amino-2'-chloro-2'-deoxy-2'-fluoroadenosine

(2'R)-2'-Chloro-2'-deoxy-2',5-difluorouridine

(2'S)-2'-Chloro-2'-deoxy-2',5-difluorouridine

(2'S)-2'-Chloro-2'-deoxy-2'-fluoroadenosine

(2'S)-2-Amino-2'-chloro-2'-deoxy-2'-fluoroadenosine

(2'S)-2'-Chloro-2'-deoxy-6-O-ethyl-2'-fluoroguanosine