Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P(S)-(2-cyanoethyl)-3-(4-methoxybenzoyl)-P-thiothymidylyl-(3′→5′)-3-(4-methoxybenzoyl)-, 3′-(4-oxopentanoate)

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3-(4-methoxybenzoyl)-, 3′-[S-(2-cyanoethyl) hydrogen phosphorothioate]

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-6-O-(2,5-dichlorophenyl)-N-(2-methyl-1-oxopropyl)-, 3′-[S-(2-cyanoethyl) hydrogen phosphorothioate]

Thymidine, 3-(4-methoxybenzoyl)-, 3′-(4-oxopentanoate)

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3-(4-methoxybenzoyl)-

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3-(4-methoxybenzoyl)-, 3′-(4-oxopentanoate)

1-[2-Deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-1H-indol-5-amine

N-[1-[2-Deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-1H-indol-5-yl]formamide

1-[2-Deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-5-nitro-1H-indole

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

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

1-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-[2-[6-(dimethylamino)-2-naphthalenyl]ethynyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-[2-(2-naphthalenyl)ethynyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-[2-(1-naphthalenyl)ethynyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-6-[2-[6-(dimethylamino)-2-naphthalenyl]ethynyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-6-[2-(2-naphthalenyl)ethynyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-6-[2-(1-naphthalenyl)ethynyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine

1-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-6-iodo-1H-pyrazolo[3,4-d]pyrimidin-4-amine

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