P(S)-[[4-[[4-(Hexadecyloxy)benzoyl]oxy]phenyl]methyl]-2′-O-methyl-P-thiouridylyl-(3′→5′)-2′-deoxyadenosine

2′-O-Methyl-P(S)-[[4-(2-methyl-1-oxopropoxy)phenyl]methyl]-P-thiouridylyl-(3′→5′)-2′-deoxyadenosine

P(S)-[(2,2-Dimethyl-1-oxopropoxy)methyl]-2′-O-methyl-P-thiouridylyl-(3′→5′)-2′-deoxyadenosine

4-Fluoro-1-β-D-ribofuranosyl-1H-indole

4,6-Difluoro-1-β-D-ribofuranosyl-1H-indole

1-[2-Deoxy-5-O-[(1,1-dimethylethyl)diphenylsilyl]-3-O-(methylsulfonyl)-β-D-erythro-pentofuranosyl]-4-fluoro-1H-indole

1-[2-Deoxy-5-O-[(1,1-dimethylethyl)diphenylsilyl]-3-O-(methylsulfonyl)-β-D-erythro-pentofuranosyl]-4,6-difluoro-1H-indole

1-[2-Deoxy-5-O-[(1,1-dimethylethyl)diphenylsilyl]-3-O-(methylsulfonyl)-β-D-erythro-pentofuranosyl]-6-fluoro-1H-indole

1-(2-Deoxy-β-D-erythro-pentofuranosyl)-4-fluoro-1H-indole

1-(2-Deoxy-β-D-erythro-pentofuranosyl)-4,6-difluoro-1H-indole

1-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-fluoro-1H-indole

1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-4-fluoro-1H-indole

1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-4,6-difluoro-1H-indole

1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-6-fluoro-1H-indole

Cytidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-[(dimethylamino)methylene]-3,6-dihydro-6-oxo-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

(2R,3S,3aS,13aR)-9-Amino-2,3,3a,13a-tetrahydro-3-hydroxy-7-phenylfuro[3′,2′:5,6][1,2,3]triazolo[5′,1′:3,4]pyrazino[1,2-e]purine-2-methanol

(2R,3S,3aS,13aR)-9-Amino-7-[(1,1-dimethylethyl)dimethylsilyl]-2,3,3a,13a-tetrahydro-3-hydroxyfuro[3′,2′:5,6][1,2,3]triazolo[5′,1′:3,4]pyrazino[1,2-e]purine-2-methanol

Furo[3′,2′:5,6][1,2,3]triazolo[5′,1′:3,4]pyrazino[1,2-e]purine-2-methanol, 3-(acetyloxy)-9-amino-2,3,3a,13a-tetrahydro-7-phenyl-, 2-acetate, (2R,3S,3aS,13aR)-

Furo[3′,2′:5,6][1,2,3]triazolo[5′,1′:3,4]pyrazino[1,2-e]purine-2-methanol, 3-(acetyloxy)-9-amino-7-[(1,1-dimethylethyl)dimethylsilyl]-2,3,3a,13a-tetrahydro-, 2-acetate, (2R,3S,3aS,13aR)-

(9aS,9bS,15aR,16aR)-9a,9b,15a,16a-Tetrahydro-11,11,13,13-tetrakis(1-methylethyl)-6-phenyl-15H-[1,2,3]triazolo[5′,1′:3,4][1,3,5,2,4]trioxadisilocino[6′′,7′′:4′,5′]furo[3′,2′:5,6]pyrazino[1,2-e]purin-4-amine