Ethyl3,4-dihydro-5-[2-O-(2-methoxyethyl)-β-D-ribofuranosyl]-2,4-dioxo-1(2H)-pyrimidineacetate

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

1-Methyl-5-[3-O-[(4-methylphenyl)sulfonyl]-β-D-ribofuranosyl]-2,4(1H,3H)-pyrimidinedione

2'-Deoxy-1-methyl-5'-O-tritylpseudouridine

2,4-Dioxo-5-β-D-ribofuranosyl-1,3(2H,4H)-pyrimidinedipropanenitrile

5-[2-Deoxy-5-O-[(2-methoxyethoxy)methyl]-β-D-erythro-pentofuranosyl]-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione

5-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[(2-cyanoethoxy)(ethylmethylamino)phosphino]-2-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribofuranosyl]-2,4(1H,3H)-pyrimidinedione

N-(2-Aminoethyl)-3,4-dihydro-2,4-dioxo-5-β-D-ribofuranosyl-1(2H)-pyrimidinepropanamide

5-(5-O-Acetyl-β-D-ribofuranosyl)-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione

5-[2-Deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-3,4-dihydro-N-methyl-2,4-dioxo-1(2H)-pyrimidineacetamide

1,3-Dimethyl-5-[2-O-(methylsulfonyl)-β-Dribofuranosyl]-2,4(1H,3H)-pyrimidinedione

5-(3-O-Acetyl-2-chloro-2-deoxy-β-D-ribofuranosyl)-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione

N-(2-Aminoethyl)-3-(3,4-dihydro-2,4-dioxo-5-β-D-ribofuranosyl-1(2H)-pyrimidinyl)-2-propenamide

PhenylmethylN-[2-[3,4-dihydro-5-[2-O-(2-methoxyethyl)-β-D-ribofuranosyl]-2,4-dioxo-1(2H)-pyrimidinyl]ethyl]carbamate

5-[2-Deoxy-5-O-[tris(1-methylethyl)silyl]-β-Derythro-pentofuranosyl]-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione

5-[2-Deoxy-5-O-[tris(1-methylethyl)silyl]-β-Dthreo-pentofuranosyl]-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione

5-[(2R,4S)-4-[[(1,1-Dimethylethyl)dimethylsilyl]oxy]tetrahydro-5,5-bis(hydroxymethyl)-2-furanyl]-3,4-dihydro-N-methyl-2,4-dioxo-1(2H)-pyrimidineacetamide

5-[5-O-[(1,1-Dimethylethyl)dimethylsilyl]-β-Dribofuranosyl]-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione

2,4(1H,3H)-Pyrimidinedione,5-[5-O-(methoxymethyl)-2,3-O-(1-methylethylidene)-α-Dlyxofuranosyl]-1,3-dimethyl-

5-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-1-[2-(dimethylamino)ethyl]-2,4(1H,3H)-pyrimidinedione