(3′S,3aR,6R,6aR)-6-[[[(1,1-Dimethylethyl)dimethylsilyl]oxy]methyl]-6,6a-dihydro-1′,1′,2,2-tetramethylspiro[furo[3,4-d]-1,3-dioxole-4(3aH),3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

(1′S,3′R,6aR,9aS)-6,6a,9,9a-Tetrahydro-1′-methyl-2,2,4,4-tetrakis(1-methylethyl)spiro[8H-furo[3,2-f]-1,3,5,2,4-trioxadisilocin-8,3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

Uridine, 2′,3′,5′-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-6-(1-hydroxy-1-methylethyl)-

Uridine, 6-acetyl-2′,3′,5′-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-

Uridine, 2′,3′,5′-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-6-(1-hydroxyethyl)-

Uridine, 2′,3′,5′-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-6-formyl-

Uridine, 6-(1,2-dihydroxyethyl)-2′,3′,5′-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-

Uridine, 2′,3′,5′-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-6-ethenyl-

Uridine, 2′,3′,5′-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-6-iodo-

Uridine, 5′-O-[(1,1-dimethylethyl)dimethylsilyl]-6-(1-hydroxy-1-methylethyl)-2′,3′-O-(1-methylethylidene)-

Uridine, 2′-deoxy-6-(1-hydroxyethyl)-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

6-Chloro-9-(2,3-di-O-acetyl-5,6-dideoxy-5,5-difluoro-β-D-ribo-hexofuranosyl)-9H-purine

Adenosine, 2-chloro-5′-deoxy-5′,5′,5′-trifluoro-N-(tetrahydro-2H-pyran-4-yl)-, 2′,3′-diacetate

2,6-Dichloro-9-(2,3-di-O-acetyl-5-deoxy-5,5,5-trifluoro-β-D-ribofuranosyl)-9H-purine

Adenosine, 5′-deoxy-5′-fluoro-2-methyl-N-(tetrahydro-2H-pyran-4-yl)-, 2′,3′-diacetate

6-Chloro-9-(2,3-di-O-acetyl-5-deoxy-5-fluoro-β-D-ribofuranosyl)-2-methyl-9H-purine

Adenosine, 5′-deoxy-5′-fluoro-N-(tetrahydro-2H-pyran-4-yl)-, 2′,3′-diacetate

Adenosine, 2-chloro-5′-deoxy-N-[1-[(ethylamino)carbonyl]-4-piperidinyl]-5′-fluoro-

Adenosine, N-(4-chloro-2-fluorophenyl)-5′-deoxy-5′-fluoro-

Adenosine, 5′-deoxy-5′-fluoro-N-(tetrahydro-1,1-dioxido-2H-thiopyran-4-yl)-