2′-Deoxy-5′-O-[(1,1-dimethylethyl)[(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl)oxy]phenylsilyl]-N-(2-methyl-1-oxopropyl)guanosine

N-Benzoyl-2′-deoxy-5′-O-[(1,1-dimethylethyl)[(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl)oxy]phenylsilyl]cytidine

N-Benzoyl-2′-deoxy-5′-O-[(1,1-dimethylethyl)[(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl)oxy]phenylsilyl]adenosine

Guanosine 5′-(pentahydrogen tetraphosphate), 2′,3′-dideoxy-, P′′′→5′-ester with adenosine 3′-[2-(methylamino)benzoate]

N-[2-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-6-(methylthio)-2H-pyrazolo[3,4-d]pyrimidin-4-yl]-2-methylpropanamide

N-[2-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-6-(methylthio)-2H-pyrazolo[3,4-d]pyrimidin-4-yl]-2-methylpropanamide

N-[2-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-(methylthio)-2H-pyrazolo[3,4-d]pyrimidin-4-yl]-2-methylpropanamide

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-6-(methylthio)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethylethanimidamide

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-6-(methylthio)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethylethanimidamide

N′-[1-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-(methylthio)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethylethanimidamide

N′-[1-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-(methylthio)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethylmethanimidamide

2-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-(methylthio)-2H-pyrazolo[3,4-d]pyrimidin-4-amine

2-(2-Deoxy-β-D-erythro-pentofuranosyl)-4-(1-methylethoxy)-6-(methylthio)-2H-pyrazolo[3,4-d]pyrimidine

1-(2-Deoxy-β-D-erythro-pentofuranosyl)-4-(1-methylethoxy)-6-(methylthio)-1H-pyrazolo[3,4-d]pyrimidine

2-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-4-(1-methylethoxy)-6-(methylthio)-2H-pyrazolo[3,4-d]pyrimidine

1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-4-(1-methylethoxy)-6-(methylthio)-1H-pyrazolo[3,4-d]pyrimidine

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-3-chloro-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethylmethanimidamide

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-3-chloro-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethylmethanimidamide

N′-[3-Chloro-1-(2-deoxy-β-D-erythro-pentofuranosyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethylmethanimidamide

3-Chloro-1-(2-deoxy-β-D-erythro-pentofuranosyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine