Thymidine, 3′-O-dephosphinico-5′-O-[(4-methoxyphenyl)diphenylmethyl]thymidylylcarbonyl-(3′→5′)-3′-O-2-propenyl-

Thymidine, 5′-O-[(4-methoxyphenyl)diphenylmethyl]-, 3′-(1H-imidazole-1-carboxylate)

Cytidine, N-(2-cyanoethyl)-2′-deoxy-

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-(2-methyl-1-oxopropyl)-, 3′-[4-[methyl(trifluoroacetyl)amino]butyl bis(1-methylethyl)phosphoramidite]

Adenosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-, 3′-[4-[methyl(trifluoroacetyl)amino]butyl bis(1-methylethyl)phosphoramidite]

Cytidine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-, 3′-[4-[methyl(trifluoroacetyl)amino]butyl bis(1-methylethyl)phosphoramidite]

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[4-[methyl(trifluoroacetyl)amino]butyl bis(1-methylethyl)phosphoramidite]

2,4(1H,3H)-Pyrimidinedione, 1-[6′aR,8′R,9′aR)-6′a,9′a-dihydro-2′,2′,4′,4′-tetrakis(1-methylethylspiro[1,3-dioxolane-2,9′(8′H)-[6H]furo[3,2-f][1,3,5,2,4]trioxadisilocin]-8′-yl]-

Uridine, 2′-C-(2-propenyloxy)-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Uridine, 2′-C-(2-methylpropoxy)-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Uridine, 2′-C-butoxy-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Uridine, 2′-C-propoxy-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Uridine, 2′-C-ethoxy-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Uridine, 2′-C-methoxy-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

2,4(1H,3H)-Pyrimidinedione, 1-[2-C-(ethoxyphenylphosphinyl)-3,5-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-β-D-arabinofuranosyl]-