Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-(2-methyl-1-oxopropyl)-, 2-cyanoethyl 4-morpholinylphosphonite

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-(2-methyl-1-oxopropyl)-, 3′-(2-cyanoethyl dimethylphosphoramidite)

Cytidine, N-benzoyl-5′-deoxy-2′,3′-O-(1-methylethylidene)-

Cytidine, N-benzoyl-5′-deoxy-

Uridine, 6-(methyldiphenylsilyl)-

Uridine, 6-(trimethylsilyl)-

Uridine, 5′-O-(methoxymethyl)-6-(methyldiphenylsilyl)-2′,3′-O-(1-methylethylidene)-

Uridine, 5′-O-(methoxymethyl)-2′,3′-O-(1-methylethylidene)-6-(trimethylsilyl)-

Uridine, 2′-deoxy-3′,5′-bis-O-(tetrahydro-2H-pyran-2-yl)-

Uridine, 5-bromo-2′-deoxy-3′,5′-bis-O-(tetrahydro-2H-pyran-2-yl)-

5′-Adenylic acid, 2′,3′-O-(1-methylethylidene)-, bis(2-chlorophenyl) ester

5′-Uridylic acid, 3-methyl-2′,3′-O-(1-methylethylidene)-, bis(2-chlorophenyl) ester

Guanosine, 2′-deoxy-6-O-[2-[[1-[2-deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]amino]ethyl]-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(triphenylmethyl)-

Guanosine, 2′-deoxy-6-O-[2-[[1-[2-deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]amino]ethyl]-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-[(4-methoxyphenyl)diphenylmethyl]-

Cytidine, N,N′′-1,2-ethanediylbis[2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Cytidine, 2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-hydroxyethyl)-

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

1-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-4-(3-nitro-1H-1,2,4-triazol-1-yl)-2(1H)-pyrimidinone

9-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-6-(3-nitro-1H-1,2,4-triazol-1-yl)-9H-purin-2-amine

9-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-6-(3-nitro-1H-1,2,4-triazol-1-yl)-N-(triphenylmethyl)-9H-purin-2-amine