1-[(4R,6R,7R,9S)-6,7-Dihydro-9-hydroxy-4-(hydroxymethyl)-4,7-methano-4H-[1,2,3]triazolo[5,1-c][1,4]oxazin-6-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

Thymidine,4'-C-acetyl-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-,3'-[2-cyanoethylbis(1-methylethyl)phosphoramidite]

5-Methyl-1-[(1R,3R,4R,5R,7S)-5-methyl-6-oxo-7-(phenylmethoxy)-1-[(phenylmethoxy)methyl]-2-oxabicyclo[2.2.1]hept-3-yl]-2,4(1H,3H)-pyrimidinedione

1-[(1S,3R,4S,7R)-1-[[[(1,1-Dimethylethyl)diphenylsilyl]oxy]methyl]-5-oxo-7-(phenylmethoxy)-2-oxabicyclo[2.2.1]hept-3-yl]-3-(phenylmethyl)-2,4(1H,3H)-pyrimidinedione

5-Methyl-1-[(1R,5R,7R,8S)-3-oxo-8-(phenylmethoxy)-5-[(phenylmethoxy)methyl]-6-oxa-2-azabicyclo[3.2.1]oct-7-yl]-2,4(1H,3H)-pyrimidinedione

1-[4-C-(4-Chlorophenyl)-3,5-O-(1-methylethylidene)-β-L-lyxofuranosyl]-5-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione

1-[3,5-Bis-O-(phenylmethyl)-4-C-1H-1,2,3-triazol-5-yl-2-O-[(trifluoromethyl)sulfonyl]-β-D-arabinofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

5-Methyl-1-[(1R,5R,7R,8S)-2-methyl-3-oxo-8-(phenylmethoxy)-5-[(phenylmethoxy)methyl]-6-oxa-2-azabicyclo[3.2.1]oct-7-yl]-3-[(phenylmethoxy)methyl]-2,4(1H,3H)-pyrimidinedione

5-Methyl-1-[(1R,5R,7R,8S)-3-oxo-8-(phenylmethoxy)-5-[(phenylmethoxy)methyl]-6-oxa-2-azabicyclo[3.2.1]oct-7-yl]-3-[(phenylmethoxy)methyl]-2,4(1H,3H)-pyrimidinedione

1-[4-C-[1-[(2,4-Dimethoxyphenyl)methyl]-1H-1,2,3-triazol-4-yl]-3,5-bis-O-(phenylmethyl)-β-D-arabinofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1R,5R,7R,8S)-5-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-8-hydroxy-2-methyl-3-oxo-6-oxa-2-azabicyclo[3.2.1]oct-7-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

5-Methyl-3-[(phenylmethoxy)methyl]-1-[(2R,3R,4aS,8aR,9S)-2,3,8,8a-tetrahydro-9-(2-naphthalenylmethoxy)-5-oxo-5H-2,4amethano-1,4-benzodioxin-3-yl]-2,4(1H,3H)-pyrimidinedione

5-Methyl-3-[(phenylmethoxy)methyl]-1-[(2R,3R,4aS,8aS,9S)-2,3,8,8a-tetrahydro-9-(2-naphthalenylmethoxy)-5-oxo-5H-2,4amethano-1,4-benzodioxin-3-yl]-2,4(1H,3H)-pyrimidinedione

1-[(1R,5R,7R,8S)-5-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-8-hydroxy-3-oxo-6-oxa-2-azabicyclo[3.2.1]oct-7-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

Ethyl4-(2,2-dimethyl-1-oxopropoxy)-1-(2,2-dimethyl-1-oxopropyl)-1,2,3,5a,6,7,8,8aoctahydro-6,8-dioxo-7-phenyl-5H-5,8bepoxypyrrolo[3,4-g]indole-5-carboxylate

1-[(4R,6R,7R,9S)-6,7-Dihydro-9-(phenylmethoxy)-4-[(phenylmethoxy)methyl]-4,7-methano-4H-[1,2,3]triazolo[5,1-c][1,4]oxazin-6-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

3'-De(phosphinicooxy)-5-methyl-2'-O,4'-C-methyleneuridylyl-1H-1,2,3-triazole-1,4-diyl-(3'→5')-5'-deoxy-5-methyl-2'-O,4'-C-methyleneuridine

(1R,5R,7R,8S)-5-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-6-oxabicyclo[3.2.1]oct-3-en-8-yl2-cyanoethylN,N-bis(1-methylethyl)phosphoramidite

1-[4-C-[1-[(2,4-Dimethoxyphenyl)methyl]-1H-1,2,3-triazol-4-yl]-3,5-bis-O-(phenylmethyl)-2-O-[(trifluoromethyl)sulfonyl]-β-D-arabinofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

(4R,6R,7R,9S)-4-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-6-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-6,7-dihydro-4,7-methano-4H-[1,2,3]triazolo[5,1-c][1,4]oxazin-9-yl2-cyanoethylN,N-bis(1-methylethyl)phosphoramidite