(2R,3R,4S,5R)-2-[6-Amino-2-[[2-(3-methoxyphenyl)-1-methylethyl]amino]-9H-purin-9-yl]-5-(2-ethyl-2H-tetrazol-5-yl)tetrahydro-3,4-furandiol

(2R,3R,4S,5R)-2-[6-Amino-2-[[2-(4-bromophenyl)-1-methylethyl]amino]-9H-purin-9-yl]-5-(2-ethyl-2H-tetrazol-5-yl)tetrahydro-3,4-furandiol

(2R,3R,4S,5R)-2-[6-Amino-2-[[2-(4-chlorophenyl)-1-methylethyl]amino]-9H-purin-9-yl]-5-(2-ethyl-2H-tetrazol-5-yl)tetrahydro-3,4-furandiol

(2R,3R,4S,5R)-2-[6-Amino-2-[[2-(4-fluorophenyl)-1-methylethyl]amino]-9H-purin-9-yl]-5-(2-ethyl-2H-tetrazol-5-yl)tetrahydro-3,4-furandiol

(2R,3R,4S,5R)-2-[6-Amino-2-[(1-methyl-2-phenylethyl)amino]-9H-purin-9-yl]-5-(2-ethyl-2H-tetrazol-5-yl)tetrahydro-3,4-furandiol

1-[2,3-Dideoxy-3-(hydroxymethylamino)-α-L-erythro-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[2,3-Dideoxy-5-O-[(1,1-dimethylethyl)dimethylsilyl]-3-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methylamino]-α-L-erythro-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

2,4(1H,3H)-Pyrimidinedione, 1-[3-deoxy-5-O-[(1,1-dimethylethyl)dimethylsilyl]-3-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methylamino]-2-Se-phenyl-2-seleno-α-L-arabinofuranosyl]-5-methyl-

Thymidine, 3′-deoxy-3′-(hydroxymethylamino)-

1-[2,3-Dideoxy-3-(hydroxymethylamino)-α-D-erythro-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[2,3-Dideoxy-5-O-[(1,1-dimethylethyl)dimethylsilyl]-3-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methylamino]-α-D-erythro-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

2,4(1H,3H)-Pyrimidinedione, 1-[3-deoxy-5-O-[(1,1-dimethylethyl)dimethylsilyl]-3-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methylamino]-2-Se-phenyl-2-seleno-α-D-arabinofuranosyl]-5-methyl-

Uridine, 5-[2-(benzoylthio)ethyl]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[4-[(1,1-dimethylethyl)dithio]butyl]-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[2-[(1,1-dimethylethyl)dithio]ethyl]-

Uridine, 5-[4-(benzoylthio)butyl]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-

Uridine, 5-[4-(benzoylthio)butyl]-2′-deoxy-

Uridine, 5-[2-(benzoylthio)ethyl]-2′-deoxy-

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

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