1-[(2R,4S,5R)-5-[2-(Benzoyloxy)ethyl]-4-[[[2-[(2R,3S,5R)-3-[[[bis(4-methoxyphenyl)phenylmethyl]thio]methyl]-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-2-furanyl]ethyl]sulfonyl]methyl]tetrahydro-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(2R,4S,5R)-5-[2-[[[(2R,3S,5R)-2-[2-(Benzoyloxy)ethyl]-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-3-furanyl]methyl]sulfonyl]ethyl]tetrahydro-4-(mercaptomethyl)-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(2R,4S,5R)-4-[[[2-[(2R,3S,5R)-5-(3,4-Dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-3-(mercaptomethyl)-2-furanyl]ethyl]sulfonyl]methyl]tetrahydro-5-[2-(triphenylmethoxy)ethyl]-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

S-[[(2R,3S,5R)-2-[2-[[[(2R,3S,5R)-2-[2-(Benzoyloxy)ethyl]-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-3-furanyl]methyl]sulfonyl]ethyl]-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-3-furanyl]methyl] ethanethioate

1-[(2R,4R,5R)-5-[2-[[[(2R,3S,5R)-2-[2-(Benzoyloxy)ethyl]-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-3-furanyl]methyl]sulfonyl]ethyl]tetrahydro-4-(hydroxymethyl)-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(2R,4S,5R)-4-[[[2-[(2R,3R,5R)-5-(3,4-Dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-3-(hydroxymethyl)-2-furanyl]ethyl]sulfonyl]methyl]tetrahydro-5-[2-(triphenylmethoxy)ethyl]-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(2R,4S,5R)-4-[[[2-[(2R,3R,5R)-5-(3,4-Dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-3-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-2-furanyl]ethyl]sulfonyl]methyl]tetrahydro-5-(2-hydroxyethyl)-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(2R,4S,5R)-5-(2-Bromoethyl)-4-[[[2-[(2R,3R,5R)-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-3-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-2-furanyl]ethyl]sulfonyl]methyl]tetrahydro-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

N-[1-[(2R,4R,5R)-5-[2-[[[(2R,3S,5R)-2-(2-Bromoethyl)-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-3-furanyl]methyl]sulfonyl]ethyl]-4-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-2-furanyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]-4-methylbenzamide

N-[1-[(2R,4R,5R)-5-[2-[[[(2R,3S,5R)-5-(3,4-Dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-2-(2-hydroxyethyl)-3-furanyl]methyl]sulfonyl]ethyl]-4-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-2-furanyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]-4-methylbenzamide

1-[(2R,4S,5R)-5-[2-(Benzoyloxy)ethyl]-4-[[[2-[(2R,3R,5R)-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-3-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-2-furanyl]ethyl]sulfonyl]methyl]tetrahydro-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(2R,4S,5R)-4-[[[2-[(2R,3R,5R)-5-(3,4-Dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-3-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-2-furanyl]ethyl]sulfonyl]methyl]tetrahydro-5-[2-(triphenylmethoxy)ethyl]-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

N-[1-[(2R,4R,5R)-5-[2-[[[(2R,3S,5R)-5-(3,4-Dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-2-[2-(triphenylmethoxy)ethyl]-3-furanyl]methyl]sulfonyl]ethyl]-4-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-2-furanyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]-4-methylbenzamide

1-[(2R,4S,5R)-5-[2-(Benzoyloxy)ethyl]-4-[[[2-[(2R,3R,5R)-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-3-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-2-furanyl]ethyl]thio]methyl]tetrahydro-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(2R,4S,5R)-4-[[[2-[(2R,3R,5R)-5-(3,4-Dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-3-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-2-furanyl]ethyl]thio]methyl]tetrahydro-5-[2-(triphenylmethoxy)ethyl]-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

N-[1-[(2R,4R,5R)-5-[2-[[[(2R,3S,5R)-5-(3,4-Dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-2-[2-(triphenylmethoxy)ethyl]-3-furanyl]methyl]thio]ethyl]-4-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-2-furanyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]-4-methylbenzamide

N-[1-[(2R,4R,5R)-4-[[[(1,1-Dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-5-(2-hydroxyethyl)-2-furanyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]-4-methylbenzamide

N-[1-[(2R,4R,5R)-5-(2-Bromoethyl)-4-[[[(1,1-dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-2-furanyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]-4-methylbenzamide

N-[1-[(2R,4R,5R)-4-[[[(1,1-Dimethylethyl)diphenylsilyl]oxy]methyl]tetrahydro-5-[2-[(methylsulfonyl)oxy]ethyl]-2-furanyl]-1,2-dihydro-2-oxo-4-pyrimidinyl]-4-methylbenzamide

6-(2-Bromophenyl)-3-(2-deoxy-β-D-erythro-pentofuranosyl)furo[2,3-d]pyrimidin-2(3H)-one