Uridine, 3′-C-cyano-3′-deoxy-5-methyl-3′-[(methylsulfonyl)amino]-5′-O-(phenylmethyl)-2′-O-(trimethylsilyl)-

3′-(Acetylamino)-2′,3′-dideoxy-5′-O-(triphenylmethyl)uridine

3′-Amino-2′,3′-dideoxy-5′-O-(triphenylmethyl)uridine

Uridine, 2′,5′-dideoxy-5′-[(9-phenyl-9H-xanthen-9-yl)amino]-

5'-[[(2-Chlorophenyl)diphenylmethyl]amino]-2',5'-dideoxyuridine

2′,5′-Dideoxy-5′-[[(4-methoxyphenyl)diphenylmethyl]amino]uridine

5'-[[(4-Cyanophenyl)diphenylmethyl]amino]-2',5'-dideoxyuridine

5'-O-[(4-Cyanophenyl)diphenylmethyl]-2'-deoxyuridine

2′,3′-Dideoxy-3′-fluoro-5′-O-(triphenylsilyl)uridine

2′,3′,5′-Trideoxy-3′-fluoro-5′-[(triphenylmethyl)amino]uridine

2′,5′-Dideoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-[(triphenylmethyl)amino]uridine

2′,5′-Dideoxy-5′-[(triphenylmethyl)amino]uridine

2′-Deoxy-5′-O-(triphenylsilyl)uridine

2′-Deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-(triphenylmethyl)uridine

2′,5′-Dideoxy-5′-[(diphenyl-4-pyridinylmethyl)amino]uridine

Uridine, 2′,5′-dideoxy-5′-[tris(1-methylethyl)silyl]-

Guanosine, 1-(4-chloro-2,3-dihydroxybutyl)-2′-deoxy-

Guanosine, 2′-deoxy-1-(2,3,4-trihydroxybutyl)-

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-4,6,7,8-tetrahydro-7-hydroxy-6-(hydroxymethyl)pyrimido[1,2-a]purin-10(3H)-one

3-Pyridinecarboxylic acid, 1,4-dihydro-4-imino-1-[2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-