2′-[3-(Acetyloxy)propyl]-2′-deoxy-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]uridine

N-Acetyl-2′-deoxy-2′-propylcytidine

N-Acetyl-3′,5′-O-[bis(1,1-dimethylethyl)silylene]-2′-deoxy-2′-propylcytidine

3′,5′-O-[Bis(1,1-dimethylethyl)silylene]-2′-deoxy-2′-propyluridine

N-Acetyl-2′-deoxy-2′-ethylcytidine

N-Acetyl-3′,5′-O-[bis(1,1-dimethylethyl)silylene]-2′-deoxy-2′-ethylcytidine

N-Acetyl-3′,5′-O-[bis(1,1-dimethylethyl)silylene]-2′-deoxy-2′-(2-iodoethyl)cytidine

N-Acetyl-3′,5′-O-[bis(1,1-dimethylethyl)silylene]-2′-deoxy-2′-(2-hydroxyethyl)cytidine

N-Acetyl-2′-[2-(acetyloxy)ethyl]-2′-deoxycytidine

N-Acetyl-2′-[2-(acetyloxy)ethyl]-3′,5′-O-[bis(1,1-dimethylethyl)silylene]-2′-deoxycytidine

N-Acetyl-3′,5′-O-[bis(1,1-dimethylethyl)silylene]-2′-deoxy-2′-(2-oxoethyl)cytidine

N-Acetyl-3′,5′-O-[bis(1,1-dimethylethyl)silylene]-2′-deoxy-2′-(2-propen-1-yl)cytidine

Cytidine, N-acetyl-3′,5′-O-[bis(1,1-dimethylethyl)silylene]-, 2′-(O-phenyl carbonothioate)

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-O-dephosphinicothymidylyl-1,2-ethanediyl[(2,2,2-trifluoroacetyl)imino]-1,2-ethanediyloxy-1,2-ethanediyloxy-1,2-ethanediyl[(2,2,2-trifluoroacetyl)imino]-1,2-ethanediyl-(3′→5′)-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-3′-O-dephosphinicothymidylyl-1,2-ethanediyl[(2,2,2-trifluoroacetyl)imino]-1,2-ethanediyloxy-1,2-ethanediyloxy-1,2-ethanediyl[(2,2,2-trifluoroacetyl)imino]-1,2-ethanediyl-(3′→5′)-thymidine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-3′-O-dephosphinicothymidylyl-1,2-ethanediylimino-1,2-ethanediyloxy-1,2-ethanediyloxy-1,2-ethanediylimino-1,2-ethanediyl-(3′→5′)-thymidine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-3′-O-dephosphinicothymidylyl-1,2-ethanediylimino-1,2-ethanediyloxy-1,2-ethanediyloxy-1,2-ethanediylimino-1,2-ethanediyl-(3′→5′)-3′-O-[(1,1-dimethylethyl)dimethylsilyl]thymidine

5′-O-[2-[[2-[2-(2-Aminoethoxy)ethoxy]ethyl]amino]ethyl]-3′-O-[(1,1-dimethylethyl)dimethylsilyl]thymidine

3′-O-[(1,1-Dimethylethyl)dimethylsilyl]-5′-O-[13-(4-methoxyphenyl)-13,13-diphenyl-6,9-dioxa-3,12-diazatridec-1-yl]thymidine

3′-O-[(1,1-Dimethylethyl)dimethylsilyl]-5′-O-(2-oxoethyl)thymidine