Uridine, 5′-amino-5′-deoxy-3′-de(phosphinicooxy)-2′-O-[(1,1-dimethylethyl)dimethylsilyl]uridylyl(2-oxo-1,2-ethanediyl)imino-(3′→5′)-3′,5′-dideoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-(2-ethoxy-2-oxoethyl)-

Uridine, 5′-azido-5′-deoxy-3′-de(phosphinicooxy)-2′-O-[(1,1-dimethylethyl)dimethylsilyl]uridylyl(2-oxo-1,2-ethanediyl)imino-(3′→5′)-3′,5′-dideoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-(2-ethoxy-2-oxoethyl)-

Uridine, 5′-amino-5′-deoxy-3′-de(phosphinicooxy)-2′-O-[(1,1-dimethylethyl)dimethylsilyl]uridylyl(2-oxo-1,2-ethanediyl)imino-(3′→5′)-5′-deoxy-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Uridine, 5′-azido-5′-deoxy-3′-de(phosphinicooxy)-2′-O-[(1,1-dimethylethyl)dimethylsilyl]uridylyl(2-oxo-1,2-ethanediyl)imino-(3′→5′)-5′-deoxy-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-[(1,1-dimethylethyl)dimethylsilyl]uridylyl(2-oxo-1,2-ethanediyl)imino-(3′→5′)-5′-deoxy-2′-O-methyl-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-[(1,1-dimethylethyl)dimethylsilyl]uridylyl(2-oxo-1,2-ethanediyl)imino-(3′→5′)-5′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-, 3′-benzoate

Uridine, 3′-de(phosphinicooxy)-2′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]adenylyl(2-oxo-1,2-ethanediyl)imino-(3′→5′)-5′-deoxy-

Adenosine, 3′-de(phosphinicooxy)-2′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]adenylyl(2-oxo-1,2-ethanediyl)imino-(3′→5′)-5′-deoxy-

Uridine, 3′-de(phosphinicooxy)-2′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]uridylyl(2-oxo-1,2-ethanediyl)imino-(3′→5′)-5′-deoxy-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Uridine, 3′-de(phosphinicooxy)-2′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]adenylyl(2-oxo-1,2-ethanediyl)imino-(3′→5′)-5′-deoxy-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Adenosine, 3′-de(phosphinicooxy)-2′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]adenylyl(2-oxo-1,2-ethanediyl)imino-(3′→5′)-5′-deoxy-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-[2-(4-nitrophenoxy)-2-oxoethyl]-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-(carboxymethyl)-3′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Uridine, 3′-(carboxymethyl)-3′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Uridine, 5′-amino-3′,5′-dideoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-(2-ethoxy-2-oxoethyl)-

Uridine, 5′-azido-3′-(carboxymethyl)-3′,5′-dideoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Uridine, 5′-azido-3′,5′-dideoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-(2-ethoxy-2-oxoethyl)-

Uridine, 5′-amino-5′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-, 3′-benzoate

Uridine, 5′-azido-5′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-, 3′-benzoate

Adenosine, 3′-deoxy-2′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-[2-(4-nitrophenoxy)-2-oxoethyl]-