N′-[3-Cyano-1-(2-deoxy-β-D-erythro-pentofuranosyl)-4,5-dihydro-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-6-yl]-N,N-dimethylmethanimidamide

N′-[1-(2-Deoxy-β-D-erythro-pentofuranosyl)-4,5-dihydro-3-iodo-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-6-yl]-N,N-dimethylmethanimidamide

N′-[3-Bromo-1-(2-deoxy-β-D-erythro-pentofuranosyl)-4,5-dihydro-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-6-yl]-N,N-dimethylmethanimidamide

N-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-3-(1-hexyn-1-yl)-4,5-dihydro-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-6-yl]-2-methylpropanamide

N-[1-(2-Deoxy-β-D-erythro-pentofuranosyl)-3-(1-hexyn-1-yl)-4,5-dihydro-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-6-yl]-2-methylpropanamide

6-Amino-1-(2-deoxy-β-D-erythro-pentofuranosyl)-1,5-dihydro-3-(4-hydroxy-1-butyn-1-yl)-4H-pyrazolo[3,4-d]pyrimidin-4-one

6-Amino-1-(2-deoxy-β-D-erythro-pentofuranosyl)-3-(1-heptyn-1-yl)-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one

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

Cytidine, 2′-deoxy-7-iodo-8-aza-7-deazaguanylyl-(3′→5′)-2′-deoxy-7-iodo-8-aza-7-deazaguanylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-

Cytidine, 7-bromo-2′-deoxy-8-aza-7-deazaguanylyl-(3′→5′)-7-bromo-2′-deoxy-8-aza-7-deazaguanylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-

Cytidine, 2′-deoxy-7-(1-hexynyl)-8-aza-7-deazaguanylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-7-(1-hexynyl)-8-aza-7-deazaguanylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-7-(1-hexynyl)-8-aza-7-deazaguanylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-7-(1-hexynyl)-8-aza-7-deazaguanylyl-(3′→5′)-...

8-Aza-7-deazaguanosine, 2′-deoxycytidylyl-(3′→5′)-2′-deoxy-7-iodo-8-aza-7-deazaguanylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-7-iodo-8-aza-7-deazaguanylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-7-iodo-

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

6-Amino-1-(2-deoxy-β-D-erythro-pentofuranosyl)-1,5-dihydro-3-(1-pentyn-1-yl)-4H-pyrazolo[3,4-d]pyrimidin-4-one

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

(2R,3S,4R,5R)-2-(5-Ethyl-3-isoxazolyl)-5-[6-[(1-ethylpropyl)amino]-2-[[2-(1-piperidinyl)ethyl]amino]-9H-purin-9-yl]tetrahydro-3,4-furandiol

(2S,3S,4R,5R)-2-(5-Cyclopropyl-1,3,4-oxadiazol-2-yl)-5-[6-[(1-ethylpropyl)amino]-2-[[(1S)-1-(hydroxymethyl)-2-methylpropyl]amino]-9H-purin-9-yl]tetrahydro-3,4-furandiol

(2R,3R,4S,5S)-2-[2-[(2-Cyclohexylethyl)amino]-6-[(1-ethylpropyl)amino]-9H-purin-9-yl]-5-(5-cyclopropyl-1,3,4-oxadiazol-2-yl)tetrahydro-3,4-furandiol

(2S,3S,4R,5R)-2-(5-Cyclopropyl-1,3,4-oxadiazol-2-yl)-5-[6-[(1-ethylpropyl)amino]-2-[[2-(1-piperidinyl)ethyl]amino]-9H-purin-9-yl]tetrahydro-3,4-furandiol

(2S,3S,4R,5R)-2-(5-Cyclopropyl-1,3,4-oxadiazol-2-yl)-5-[6-[(1-ethylpropyl)amino]-2-[(3R)-3-pyrrolidinylamino]-9H-purin-9-yl]tetrahydro-3,4-furandiol