Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)-3′-deoxy-3′-methylthymidylyl(methylimino)-(3′→5′)-5′-deoxy-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)-3′-deoxy-3′-methylthymidylyl(methylimino)-(3′→5′)-5′-deoxy-

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)-3′-deoxy-3′-methylthymidylylimino-(3′→5′)-5′-deoxy-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)-3′-deoxy-3′-methylthymidylylimino-(3′→5′)-5′-deoxy-

Thymidine, P-(2-cyanoethyl)-3′-deoxy-3′-methylthymidylylimino-(3′→5′)-5′-deoxy-

Thymidine, P-(2-cyanoethyl)-3′-deoxy-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-3′-methylthymidylylimino-(3′→5′)-5′-deoxy-

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)thymidylylmethylene(ethoxyphosphinylidene)imino-(3′→5′)-N-benzoyl-2′,5′-dideoxy-5-methyl-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)thymidylylmethylene[(S)-ethoxyphosphinylidene]imino-(3′→5′)-N-benzoyl-2′,5′-dideoxy-5-methyl-

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)thymidylylmethylene[(R)-ethoxyphosphinylidene]imino-(3′→5′)-N-benzoyl-2′,5′-dideoxy-5-methyl-

Cytidine, 3′-de(phosphinicooxy)thymidylylmethylene(ethoxyphosphinylidene)imino-(3′→5′)-N-benzoyl-2′,5′-dideoxy-5-methyl-

Cytidine, 3′-de(phosphinicooxy)-5′-O-[(1,1-dimethylethyl)diphenylsilyl]thymidylylmethylene(ethoxyphosphinylidene)imino-(3′→5′)-N-benzoyl-2′,5′-dideoxy-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyl-

Thymidine, 3′-amino-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-deoxythymidylylmethylene-(3′→5′)-5′-deoxy-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-

Thymidine, 3′-deoxy-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-P-ethyl-3′-methylthymidylylimino-(3′→5′)-5′-deoxy-

Thymidine, 3′-amino-P,3′-dideoxy-5′-O-[dimethyl(1,1,2-trimethylpropyl)silyl]-P-methylthymidylylmethylene-(3′→5′)-5′-deoxy-, 3′-benzoate

Thymidine, 5′-deoxy-5′-[(1,1-diethoxyethyl)methylphosphinyl]-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-

Thymidine, 5′-deoxy-5′-(hydroxyphosphinyl)-

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)thymidylylmethyleneimino(ethoxyphosphinylidene)-(3′→5′)-5′-deoxy-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)thymidylylmethyleneimino(ethoxyphosphinylidene)-(3′→5′)-5′-deoxy-

Thymidine, 3′-de(phosphinicooxy)thymidylylmethyleneimino(ethoxyphosphinylidene)-(3′→5′)-5′-deoxy-

Cytidine, 3′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′,5′-dideoxy-5′-(hydroxyphosphinyl)-5-methyl-N-(1-methyl-2-pyrrolidinylidene)-