Uridine, 5-methyl-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-2′-O-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-

4′-C-[[Bis(1-methylethoxy)phosphinyl]methoxy]-5′-bromo-5′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]thymidine

Thymidine, 5′-azido-4′-C-[[bis(1-methylethoxy)phosphinyl]methoxy]-5′-deoxy-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-

5′-Azido-4′-C-[[bis(1-methylethoxy)phosphinyl]methoxy]-5′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]thymidine

Thymidine, 5′-azido-4′-C-[[bis(1-methylethoxy)phosphinyl]methoxy]-5′-deoxy-

5′-Deoxy-4′-C-[(dimethoxyphosphinyl)methoxy]-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5′-iodothymidine

5′-Deoxy-4′-C-[(dimethoxyphosphinyl)methoxy]-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-iodothymidine

Thymidine, 4′-C-[[bis(1-methylethoxy)phosphinyl]methoxy]-5′-deoxy-5′-iodo-, 3′-acetate

4′-C-[[Bis(1-methylethoxy)phosphinyl]methoxy]-5′-deoxy-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5′-iodothymidine

4′-C-[[Bis(1-methylethoxy)phosphinyl]methoxy]-5′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-iodothymidine

4′-C-[[Bis(1-methylethoxy)phosphinyl]methoxy]-5′-deoxy-5′-iodothymidine

Adenosine, 5′-de(phosphinicooxy)thymidylyloxymethylenephosphinico-(4′→3′)-2′-deoxy-

Thymidylylmethyleneoxy-(3′→4′)-5′-deoxythymidine

Adenosine, 5′-de(phosphinicooxy)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]thymidylyloxymethylene(methoxyphosphinylidene)-(4′→3′)-N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P-methylthymidylylmethyleneoxy-(3′→4′)-5′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]thymidine

5′-Deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-4′-C-[(hydroxymethoxyphosphinyl)methoxy]thymidine

5′-Deoxy-4′-C-[(dimethoxyphosphinyl)methoxy]-3′-O-[(1,1-dimethylethyl)dimethylsilyl]thymidine

4′-C-[[Bis(1-methylethoxy)phosphinyl]methoxy]-5′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]thymidine

4′-C-[[Bis(1-methylethoxy)phosphinyl]methoxy]-5′-deoxythymidine

Uridine, 2′-deoxyuridylyl-(3′→5′)-2′-deoxyuridylyl-(3′→5′)-2′-deoxyuridylyl-(3′→5′)-2′-O-phosphonouridylyl-(3′→5′)-2′-deoxyuridylyl-(3′→5′)-2′-deoxyuridylyl-(3′→5′)-2′-deoxy-