Nucleosides and Nucleotides

1-[(2R,3R,4R,5R)-4-[bis(4-methoxyphenyl)-phenyl-methoxy]-5-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-3-ethynoxy-tetrahydrofuran-2-yl]pyrimidine-2,4-dione

4-[(2R,3R,4R,5R)-2-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-4-[tert-butyl(dimethyl)silyl]oxy-5-[2-(2-methylpropanoylamino)-6-oxo-1H-purin-9-yl]tetrahydrofuran-3-yl]oxy-4-oxo-butanoic acid

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

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

N-[9-[(1S,3R,4R,7S)-1-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-7-[2-cyanoethoxy-(diisopropylamino)phosphanyl]oxy-2,5-dioxabicyclo[2.2.1]heptan-3-yl]-6-oxo-3H-purin-2-yl]-2-methyl-propanamide

N-[9-[(1R,3R,4R,7S)-1-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-7-[2-cyanoethoxy-(diisopropylamino)phosphanyl]oxy-2,5-dioxabicyclo[2.2.1]heptan-3-yl]-6-oxo-3H-purin-2-yl]-2-methyl-propanamide

[(2R,3R,4R,5R)-2-[6-[bis(tert-butoxycarbonyl)amino]purin-9-yl]-4-tert-butoxycarbonyloxy-5-[[2-cyanoethoxy-(diisopropylamino)phosphanyl]oxymethyl]tetrahydrofuran-3-yl] tert-butyl carbonate

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

N-[1-[(2R,3R,4R,5R)-5-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-3-[2-cyanoethoxy-(diisopropylamino)phosphanyl]oxy-4-methoxy-tetrahydrofuran-2-yl]-2-oxo-pyrimidin-4-yl]benzamide

N-[9-[(2R,4S,5R)-4-[bis(4-methoxyphenyl)-phenyl-methoxy]-5-[[2-cyanoethoxy-(diisopropylamino)phosphanyl]oxymethyl]tetrahydrofuran-2-yl]purin-6-yl]benzamide

N-[9-[(2R,3R,4R,5R)-4-[bis(4-methoxyphenyl)-phenyl-methoxy]-5-[[2-cyanoethoxy-(diisopropylamino)phosphanyl]oxymethyl]-3-fluoro-tetrahydrofuran-2-yl]-6-oxo-1H-purin-2-yl]-2-methyl-propanamide

N-[9-[(2R,3S,4R,5R)-5-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-3-[2-cyanoethoxy-(diisopropylamino)phosphanyl]oxy-4-fluoro-tetrahydrofuran-2-yl]-6-oxo-3H-purin-2-yl]-2-methyl-propanamide

N-[1-[(2R,4S,5R)-4-[bis(4-methoxyphenyl)-phenyl-methoxy]-5-[[2-cyanoethoxy-(diisopropylamino)phosphanyl]oxymethyl]tetrahydrofuran-2-yl]-5-methyl-2-oxo-pyrimidin-4-yl]benzamide

N'-[9-[(2R,3S,4R,5R)-5-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-4-[2-cyanoethoxy-(diisopropylamino)phosphanyl]oxy-3-fluoro-tetrahydrofuran-2-yl]-6-oxo-3H-purin-2-yl]-N,N-dimethyl-formamidine

N-[9-[(2R,3R,4R,5R)-5-[[bis(4-methoxyphenyl)-phenyl-methoxy]methyl]-4-[2-cyanoethoxy-(diisopropylamino)phosphanyl]oxy-3-methoxy-tetrahydrofuran-2-yl]-6-oxo-3H-purin-2-yl]acetamide

N-[9-[(2R,4S,5R)-4-[bis(4-methoxyphenyl)-phenyl-methoxy]-5-[[2-cyanoethoxy-(diisopropylamino)phosphanyl]oxymethyl]tetrahydrofuran-2-yl]-6-oxo-1H-purin-2-yl]-2-methyl-propanamide