4-Amino-1-(2-deoxy-2,2-difluoro-α-D-erythro-pentofuranosyl)-5-iodo-2(1H)-pyrimidinone

1-(2-Deoxy-2,2-difluoro-α-D-erythro-pentofuranosyl)-5-fluoro-2,4(1H,3H)-pyrimidinedione

2'-Deoxy-2',2',5-trifluorouridine

1-(2-Deoxy-2,2-difluoro-α-D-erythro-pentofuranosyl)-5-methyl-2,4(1H,3H)-pyrimidinedione

rel-Ethyl (11bR,13S,14aR)-14a-ethyl-2,3,5,6,14,14a-hexahydro-15-oxo-3-thioxo-11,13-methano-11H-furo[3,2-i]indolo[2,3-a]quinolizine-13(1H)-carboxylate

rel-Ethyl (11bR,13S,14aR)-14a-ethyl-2,3,5,6,14,14a-hexahydro-3,15-dioxo-11,13-methano-11H-furo[3,2-i]indolo[2,3-a]quinolizine-13(1H)-carboxylate

rel-6-Ethyl 4-methyl (3aR,4S,6S)-3-acetyl-2,3,4,5-tetrahydro-7-oxo-1H-3a,6-epoxy-3,7a-diazacyclohepta[jk]fluorene-4,6(7H)-dicarboxylate

rel-Ethyl (3aR,3bS,6aR,7S)-3-acetyl-2,3,3b,4,6,6a-hexahydro-4,6,8-trioxo-1H-3a,7-epoxy-5-oxa-3,8a-diazaazuleno[4,5,6-jk]fluorene-7(8H)-carboxylate

3′-Thymidylic acid, 5′-O-[(4-chlorophenoxy)[3-[(7-oxo-7H-furo[3,2-g][1]benzopyran-9-yl)oxy]propoxy]phosphinyl]-P-(4-chlorophenyl)thymidylyl-(3′→5′)-P-(4-chlorophenyl)thymidylyl-(3′→5′)-P-(4-chlorophenyl)thymidylyl-(3′→5′)-, 4-chlorophenyl 3-[(7-oxo-7H-furo[3,2-g][1]benzopyran-9-yl)oxy]propyl ester

3′-Thymidylic acid, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-ethylthymidylyl-(3′→5′)-, mono(4-chlorophenyl) ester

3′-Thymidylic acid, 5′-O-[[[5-[(6-chloro-2-methoxy-9-acridinyl)amino]pentyl]oxy](4-chlorophenoxy)phosphinyl]-P-(4-chlorophenyl)thymidylyl-(3′→5′)-P-(4-chlorophenyl)thymidylyl-(3′→5′)-P-(4-chlorophenyl)thymidylyl-(3′→5′)-, 5-[(6-chloro-2-methoxy-9-acridinyl)amino]pentyl 4-chlorophenyl ester

3′-Thymidylic acid, 5-[(6-chloro-2-methoxy-9-acridinyl)amino]pentyl ethyl ester

3′-Thymidylic acid, 5′-O-[(4-chlorophenoxy)hydroxyphosphinyl]-P-(4-chlorophenyl)thymidylyl-(3′→5′)-P-(4-chlorophenyl)thymidylyl-(3′→5′)-P-(4-chlorophenyl)thymidylyl-(3′→5′)-, mono(4-chlorophenyl) ester

3′-Thymidylic acid, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 5-[(6-chloro-2-methoxy-9-acridinyl)amino]pentyl ethyl ester

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-N-[[[5-[(cyclohexylcarbonyl)amino]-1-naphthalenyl]amino]carbonyl]-2′-deoxy-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

N-[[[5-[(Cyclohexylcarbonyl)amino]-1-naphthalenyl]amino]carbonyl]-2′-deoxycytidine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-N-[[[5-[(cyclohexylcarbonyl)amino]-1-naphthalenyl]amino]carbonyl]-2′-deoxycytidine

N-[[(5-Amino-1-naphthalenyl)amino]carbonyl]-2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]cytidine

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3-[2-(dicyclohexylamino)-2-oxoethyl]-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-[2-(dicyclohexylamino)-2-oxoethyl]-3′-O-[(1,1-dimethylethyl)dimethylsilyl]thymidine