2-(4-{5,6-dimethyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl}piperazin-1-yl)-5H,7H,8H-pyrano[4,3-b]pyridine-3-carbonitrile

1-[(2R,3R,4S,5R)-3-(1-bicyclo[1.1.1]pentanyl)-4-[tert-butyl(dimethyl)silyl]oxy-5-(hydroxymethyl)tetrahydrofuran-2-yl]pyrimidine-2,4-dione

1-[(1S,3R,4R,7S)-1-(azidomethyl)-7-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,5-dioxabicyclo[2.2.1]heptan-3-yl]pyrimidine-2,4-dione

1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl]-N-(2-naphthylmethyl)-2,4-dioxo-pyrimidine-5-carboxamide

2-amino-9-[(2R,3R,4S,5R)-3-hydroxy-5-[[hydroxy(imidazol-1-yl)phosphoryl]oxymethyl]-4-methoxy-tetrahydrofuran-2-yl]-7-methyl-purin-7-ium-6-olate

[[(2R,3R,4S,5R)-5-(2,4-dioxopyrimidin-1-yl)-4-fluoro-3-hydroxy-4-methyl-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl] phosphono hydrogen phosphate

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

[[(E)-2-[(2R,3R,4R,5R)-3-[2-cyanoethoxy-(diisopropylamino)phosphanyl]oxy-5-(2,4-dioxopyrimidin-1-yl)-4-methoxy-tetrahydrofuran-2-yl]vinyl]-(2,2-dimethylpropanoyloxymethoxy)phosphoryl]oxymethyl 2,2-dimethylpropanoate

3-[[2-[[Bis(4-methoxyphenyl)-phenylmethoxy]methyl]-5-(2,4-dioxo-5-prop-1-ynylpyrimidin-1-yl)oxolan-3-yl]oxy-[di(propan-2-yl)amino]phosphanyl]oxypropanenitrile

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

(2R,3R,4R,5R)-5-(benzyloxymethyl)-4-[tert-butyl(dimethyl)silyl]oxy-3-methoxy-2-phenyl-tetrahydrofuran-2-ol