5-[5-O-[(4-Methoxyphenyl)diphenylmethyl]-3-O-phosphono-β-D-ribofuranosyl]-2,4(1H,3H)-pyrimidinedione

1,3-Dimethyl-5-α-D-ribofuranosyl-2,4(1H,3H)-pyrimidinedione

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

5-[2-O-(2-Methoxyethyl)-β-D-ribofuranosyl]-1-[(phenylmethoxy)methyl]-2,4(1H,3H)-pyrimidinedione

Methyl5-(2-deoxy-β-D-erythro-pentofuranosyl)-3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinepropanoate

3-(3,4-Dihydro-2,4-dioxo-5-β-D-ribofuranosyl-1(2H)-pyrimidinyl)-2-propenoicacid

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

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

Methyl3-(3,4-dihydro-2,4-dioxo-5-β-D-ribofuranosyl-1(2H)-pyrimidinyl)-2-propenoate

Methyl(2E)-3-(3,4-dihydro-2,4-dioxo-5-β-Dribofuranosyl-1(2H)-pyrimidinyl)-2-propenoate

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