N-[2-[[(2R,3S,5R)-2-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]tetrahydro-2-furanyl]oxy]ethyl]-2,2,2-trifluoroacetamide

Guanosine, N-benzoyl-5′-C-(diethoxyphosphinyl)-2′,3′-O-(1-methylethylidene)-, (5′R)-

Adenosine, N-benzoyl-5′-C-(diethoxyphosphinyl)-2′,3′-O-(1-methylethylidene)-, (5′R)-

Cytidine, N-benzoyl-5′-C-(diethoxyphosphinyl)-2′,3′-O-(1-methylethylidene)-, (5′R)-

Uridine, 5′-C-(diethoxyphosphinyl)-3-(methoxymethyl)-2′,3′-O-(1-methylethylidene)-, (5′R)-

Guanosine, N-benzoyl-2′-deoxy-5′-C-(dimethoxyphosphinyl)-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-, (5′S)-

Guanosine, N-benzoyl-2′-deoxy-5′-C-(dimethoxyphosphinyl)-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-, (5′R)-

Adenosine, N-benzoyl-2′-deoxy-5′-C-(dimethoxyphosphinyl)-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-, (5′R)-

Cytidine, N-benzoyl-2′-deoxy-5′-C-(dimethoxyphosphinyl)-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-, (5′R)-

Thymidine, 3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5′-C-phosphono-, (5′R)-