1-[(5R,6S,8R,9R)-4-Amino-9-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-6-(hydroxymethyl)-2,2-dioxido-7-oxa-2-thia-1-azaspiro[4.4]non-3-en-8-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(5aS,7R,8R,8aR)-3a-Amino-8-[[(1,1-dimethylethyl)dimethylsilyl]oxy]hexahydro-2,2-dioxido-1H-furo[3′,2′:3,4]furo[3,2-c]isothiazol-7-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1,1-Dimethylethyl 3-[(5R,6S,8R,9R)-4-amino-9-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-2,2-dioxido-6-[(phenylmethoxy)methyl]-7-oxa-2-thia-1-azaspiro[4.4]non-3-en-8-yl]-3,6-dihydro-5-methyl-2,6-dioxo-1(2H)-pyrimidinecarboxylate

Uridine, 3′-C-cyano-3′-deoxy-3-[(1,1-dimethylethoxy)carbonyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5-methyl-3′-[(methylsulfonyl)amino]-5′-O-(phenylmethyl)-

1-[(5R,6S,8R,9R)-4-Amino-9-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-2,2-dioxido-6-[(phenylmethoxy)methyl]-7-oxa-2-thia-1-azaspiro[4.4]non-3-en-8-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

Uridine, 3′-C-cyano-3′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5-methyl-3′-[(methylsulfonyl)amino]-5′-O-(phenylmethyl)-

Uridine, 3′-C-cyano-3′-deoxy-5-methyl-3′-[(methylsulfonyl)amino]-, 5′-benzoate

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

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