Nucleosides and Nucleotides

N'-[9-[(2R,4S,5S)-5-[[2-cyanoethoxy-(diisopropylamino)phosphanyl]oxymethyl]-4-(tritylamino)tetrahydrofuran-2-yl]purin-6-yl]-N,N-dimethyl-formamidine

3-[[(2R,3R,5S)-5-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-2-(5-methyl-2,4-dioxo-pyrimidin-1-yl)tetrahydrofuran-3-yl]oxy-(diisopropylamino)phosphanyl]oxypropanenitrile

4-[(2R,3R,4R,5R)-4-fluoro-2-[[(4-hydroxyphenyl)-(4-methoxyphenyl)-phenyl-methoxy]methyl]-5-[2-(2-methylpropanoylamino)-6-oxo-1H-purin-9-yl]tetrahydrofuran-3-yl]oxy-4-oxo-butanoic acid

4-[(2R,3S,5R)-5-(4-benzamido-2-oxo-pyrimidin-1-yl)-2-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]tetrahydrofuran-3-yl]oxy-4-oxo-butanoic acid

N-[9-[(2R,3R,4R,5R)-5-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-3-[tert-butyl(dimethyl)silyl]oxy-4-hydroxy-tetrahydrofuran-2-yl]purin-6-yl]acetamide

N-[9-[(2R,3R,4R,5R)-5-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-4-hydroxy-3-methoxy-tetrahydrofuran-2-yl]-6-(2-cyanoethoxy)purin-2-yl]-2-methyl-propanamide

N-[1-[(2R,4S,5R)-5-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-4-hydroxy-tetrahydrofuran-2-yl]-2-oxo-pyrimidin-4-yl]-2-(4-tert-butylphenoxy)acetamide

1-[(1R,3R,4R,7S)-1-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-7-[(diisopropylamino)methylphosphanyloxy]-2,5-dioxabicyclo[2.2.1]heptan-3-yl]-5-methyl-pyrimidine-2,4-dione

4-[(2R,3R,4R,5R)-5-(4-acetamido-2-oxo-pyrimidin-1-yl)-2-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-4-methoxy-tetrahydrofuran-3-yl]oxy-4-oxo-butanoic acid

N-[9-[(2R,3R,4R,5R)-5-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-3-ethynoxy-4-hydroxy-tetrahydrofuran-2-yl]purin-6-yl]benzamide

N-[9-[(2R,4S,5R)-5-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-4-hydroxy-tetrahydrofuran-2-yl]-6-(2-cyanoethoxy)purin-2-yl]-2-methyl-propanamide

4-[(2R,3R,4R,5R)-5-(4-acetamido-2-oxo-pyrimidin-1-yl)-2-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-4-fluoro-tetrahydrofuran-3-yl]oxy-4-oxo-butanoic acid

N-[9-[(1R,3R,4R,7S)-1-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-7-hydroxy-2,5-dioxabicyclo[2.2.1]heptan-3-yl]purin-6-yl]benzamide

3-[(diisopropylamino)-[[(2S,3S,5R)-5-(5-methyl-2,4-dioxo-pyrimidin-1-yl)-3-(tritylamino)tetrahydrofuran-2-yl]methoxy]phosphanyl]oxypropanenitrile

N-[(E)-3-[1-[(2R,4S,5R)-5-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-4-hydroxy-tetrahydrofuran-2-yl]-2,4-dioxo-pyrimidin-5-yl]allyl]-2,2,2-trifluoro-acetamide

N-[9-[(2R,3R,4R,5R)-5-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-3-ethynoxy-4-hydroxy-tetrahydrofuran-2-yl]-6-oxo-1H-purin-2-yl]-2-methyl-propanamide