1-[3-C-Cyano-2,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-3-O-(methylsulfonyl)-β-D-xylofuranosyl]-3-hexyl-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[3-C-Cyano-2,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-xylofuranosyl]-3-hexyl-5-methyl-2,4(1H,3H)-pyrimidinedione

3′-Deoxy-2′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-3-hexyl-5-methyl-3′-oxouridine

[1,1′-Biphenyl]-4-carboxylic acid, [(5S,6R,8R,9R)-4-amino-6-(3-hexyl-3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-9-hydroxy-2,2-dioxido-1,7-dioxa-2-thiaspiro[4.4]non-3-en-8-yl]methyl ester

[1,1′-Biphenyl]-4-carboxylic acid, [(5R,6R,8R,9R)-4-amino-6-(3-hexyl-3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-9-hydroxy-2,2-dioxido-1,7-dioxa-2-thiaspiro[4.4]non-3-en-8-yl]methyl ester

1-[(5S,6R,8R,9R)-4-Amino-8-[(benzoyloxy)methyl]-9-hydroxy-2,2-dioxido-1,7-dioxa-2-thiaspiro[4.4]non-3-en-6-yl]-5-methyl-3-nonyl-2,4(1H,3H)-pyrimidinedione

1-[(5R,6R,8R,9R)-4-Amino-8-[(benzoyloxy)methyl]-9-hydroxy-2,2-dioxido-1,7-dioxa-2-thiaspiro[4.4]non-3-en-6-yl]-5-methyl-3-nonyl-2,4(1H,3H)-pyrimidinedione

1-[(5S,6R,8R,9R)-4-Amino-8-[(benzoyloxy)methyl]-9-hydroxy-2,2-dioxido-1,7-dioxa-2-thiaspiro[4.4]non-3-en-6-yl]-5-methyl-3-octyl-2,4(1H,3H)-pyrimidinedione

1-[(5R,6R,8R,9R)-4-Amino-8-[(benzoyloxy)methyl]-9-hydroxy-2,2-dioxido-1,7-dioxa-2-thiaspiro[4.4]non-3-en-6-yl]-5-methyl-3-octyl-2,4(1H,3H)-pyrimidinedione

1-[(5S,6R,8R,9R)-4-Amino-8-[(benzoyloxy)methyl]-9-hydroxy-2,2-dioxido-1,7-dioxa-2-thiaspiro[4.4]non-3-en-6-yl]-3-heptyl-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(5R,6R,8R,9R)-4-Amino-8-[(benzoyloxy)methyl]-9-hydroxy-2,2-dioxido-1,7-dioxa-2-thiaspiro[4.4]non-3-en-6-yl]-3-heptyl-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(5S,6R,8R,9R)-4-Amino-9-hydroxy-2,2-dioxido-8-[(phenylmethoxy)methyl]-1,7-dioxa-2-thiaspiro[4.4]non-3-en-6-yl]-3-heptyl-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(5R,6R,8R,9R)-4-Amino-9-hydroxy-2,2-dioxido-8-[(phenylmethoxy)methyl]-1,7-dioxa-2-thiaspiro[4.4]non-3-en-6-yl]-3-heptyl-5-methyl-2,4(1H,3H)-pyrimidinedione

2,4(1H,3H)-Pyrimidinedione, 1-[(5S,6R,8R,9R)-9-(acetyloxy)-4-amino-8-[(benzoyloxy)methyl]-2,2-dioxido-3-phenyl-1,7-dioxa-2-thiaspiro[4.4]non-3-en-6-yl]-3-hexyl-5-methyl-

2,4(1H,3H)-Pyrimidinedione, 1-[(5R,6R,8R,9R)-9-(acetyloxy)-4-amino-8-[(benzoyloxy)methyl]-2,2-dioxido-3-phenyl-1,7-dioxa-2-thiaspiro[4.4]non-3-en-6-yl]-3-hexyl-5-methyl-