2,4(1H,3H)-Pyrimidinedione, 1-[(6R,8R,9R)-4-amino-9-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-2,2-dioxido-6-[2,2,4,4-tetrakis(1-methylethyl)-1,3,5-trioxa-2,4-disilacyclohept-6-yl]-1,7-dioxa-2-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-

2,4(1H,3H)-Pyrimidinedione, 1-[(5S,6R,8R,9R)-4-amino-9-hydroxy-2,2-dioxido-6-[2,2,4,4-tetrakis(1-methylethyl)-1,3,5-trioxa-2,4-disilacyclohept-6-yl]-1,7-dioxa-2-thiaspiro[4.4]non-3-en-8-yl]-5-methyl-

1-[2-Deoxy-5-O-[(1,1-dimethylethyl)diphenylsilyl]-2-fluoro-β-D-arabinofuranosyl]-5-(difluoromethyl)-2,4(1H,3H)-pyrimidinedione

1-(2-Deoxy-2-fluoro-β-D-arabinofuranosyl)-5-(fluoromethyl)-2,4(1H,3H)-pyrimidinedione

1-[2-Deoxy-5-O-[(1,1-dimethylethyl)diphenylsilyl]-2-fluoro-β-D-arabinofuranosyl]-5-(fluoromethyl)-2,4(1H,3H)-pyrimidinedione

5-(Bromomethyl)-1-[2-deoxy-5-O-[(1,1-dimethylethyl)diphenylsilyl]-2-fluoro-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[2-Deoxy-5-O-[(1,1-dimethylethyl)diphenylsilyl]-2-fluoro-β-D-arabinofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[3,6-Anhydro-2-deoxy-3-C-[4-[(2,2,2-trifluoroacetyl)amino]phenyl]-β-D-altro-heptofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[3,6-Anhydro-2-deoxy-3-C-[4-[(2,2,2-trifluoroacetyl)amino]phenyl]-α-D-altro-heptofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[5-O-Acetyl-3,6-anhydro-2-deoxy-7-O-[(1,1-dimethylethyl)diphenylsilyl]-3-C-[4-[(2,2,2-trifluoroacetyl)amino]phenyl]-β-D-altro-heptofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[5-O-Acetyl-3,6-anhydro-2-deoxy-7-O-[(1,1-dimethylethyl)diphenylsilyl]-3-C-[4-[(2,2,2-trifluoroacetyl)amino]phenyl]-α-D-altro-heptofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-(2-Deoxy-2-fluoro-β-D-arabinofuranosyl)-5-(difluoromethyl)-2,4(1H,3H)-pyrimidinedione

1-[3,6-Anhydro-7-O-[bis(4-methoxyphenyl)phenylmethyl]-5-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-3-C-[4-[(2,2,2-trifluoroacetyl)amino]phenyl]-α-D-altro-heptofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[3,6-Anhydro-7-O-[bis(4-methoxyphenyl)phenylmethyl]-5-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-3-C-[4-[(2,2,2-trifluoroacetyl)amino]phenyl]-β-D-altro-heptofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-(2-Deoxy-2-fluoro-β-D-arabinofuranosyl)-5-[(1E)-2-(trimethylstannyl)ethenyl]-2,4(1H,3H)-pyrimidinedione

Benzimidazole, 5,6-dibromo-1-D-ribofuranosyl-

1-(2-C-Ethynyl-β-D-arabinofuranosyl)-2,4(1H,3H)-pyrimidinedione

5-Methyl-1-[(2R,4S,5R)-tetrahydro-4-hydroxy-5-[(1R)-1-hydroxy-3-butyn-1-yl]-2-furanyl]-2,4(1H,3H)-pyrimidinedione

5-Methyl-1-[(5ξ)-2,6,7-trideoxy-β-D-erythro-hept-6-ynofuranosyl]-2,4(1H,3H)-pyrimidinedione

5-Methyl-1-[(2R,4S,5R)-tetrahydro-4-hydroxy-5-[(1S)-1-hydroxy-3-butyn-1-yl]-2-furanyl]-2,4(1H,3H)-pyrimidinedione