2,4(1H,3H)-Pyrimidinedione, 1-[5-O-[bis(1-methoxyphenyl)phenylmethyl]-2,3-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-β-D-arabinofuranosyl]-

2,4(1H,3H)-Pyrimidinedione, 1-[2-O-[3-hydroxy-1,1,3,3-tetrakis(1-methylethyl)disiloxanyl]-3,5-bis-O-[[(trichloroacetyl)amino]carbonyl]-β-D-arabinofuranosyl]-

4-Chloro-7-[2-C-ethynyl-3,5-bis-O-(4-methylbenzoyl)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidine

1-[3-Deoxy-3-[(4-methoxyphenyl)amino]-β-D-lyxofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[3-Deoxy-3-(phenylamino)-β-D-lyxofuranosyl]-2,4(1H,3H)-pyrimidinedione

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

1-[5-O-Benzoyl-6-deoxy-3-O-(2-naphthalenylmethyl)-β-D-allofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[2-O-Acetyl-5-O-benzoyl-6-deoxy-3-O-(2-naphthalenylmethyl)-β-D-allofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-(2-Deoxy-β-D-threo-pentofuranosyl)-5-(methoxymethyl)-2,4(1H,3H)-pyrimidinedione

1-[(1R,3R,4R,5S)-4-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]-1-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-8-hydroxy-2,6-dioxa-8-azaspiro[4.5]dec-3-yl]-2,4(1H,3H)-pyrimidinedione

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

1-[5-O-Benzoyl-6-deoxy-3-O-(2-naphthalenylmethyl)-β-D-altrofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2,6-dideoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-β-D-allofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[2,6-Dideoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-β-D-allofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[5-O-Benzoyl-2,6-dideoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-β-D-allofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-(5-O-Benzoyl-2,6-dideoxy-2-fluoro-β-D-allofuranosyl)-2,4(1H,3H)-pyrimidinedione

1-[5-O-Benzoyl-2,6-dideoxy-2-fluoro-3-O-(2-naphthalenylmethyl)-β-D-allofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[2,6-Dideoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-α-L-talofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[2,6-Dideoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-fluoro-5-O-(4-nitrobenzoyl)-β-D-allofuranosyl]-2,4(1H,3H)-pyrimidinedione

1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2,6-dideoxy-2-fluoro-β-D-allofuranosyl]-2,4(1H,3H)-pyrimidinedione