Formamide, N-[1-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-3-bromo-4-[[(dibutylamino)methylene]amino]-1H-pyrazolo[3,4-d]pyrimidin-6-yl]-

Formamide, N-[1-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-4-[[(dibutylamino)methylene]amino]-1H-pyrazolo[3,4-d]pyrimidin-6-yl]-

N′-[4-Amino-3-bromo-1-(2-deoxy-β-D-erythro-pentofuranosyl)-1H-pyrazolo[3,4-d]pyrimidin-6-yl]-N,N-dibutylmethanimidamide

Methanimidamide, N′,N′′′-[3-bromo-1-(2-deoxy-β-D-erythro-pentofuranosyl)-1H-pyrazolo[3,4-d]pyrimidine-4,6-diyl]bis[N,N-dibutyl-

N′-[4-Amino-1-(2-deoxy-β-D-erythro-pentofuranosyl)-1H-pyrazolo[3,4-d]pyrimidin-6-yl]-N,N-dibutylmethanimidamide

Methanimidamide, N′,N′′′-[1-(2-deoxy-β-D-erythro-pentofuranosyl)-1H-pyrazolo[3,4-d]pyrimidine-4,6-diyl]bis[N,N-dibutyl-

Benzamide, N,N′-[1-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-1H-pyrazolo[3,4-d]pyrimidine-4,6-diyl]bis-

Benzamide, N,N′-[1-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-1H-pyrazolo[3,4-d]pyrimidine-4,6-diyl]bis-

Benzamide, N,N′-[1-(2-deoxy-β-D-erythro-pentofuranosyl)-1H-pyrazolo[3,4-d]pyrimidine-4,6-diyl]bis-

Acetamide, N,N′-[1-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-1H-pyrazolo[3,4-d]pyrimidine-4,6-diyl]bis[2,2-diphenoxy-

Acetamide, N,N′-[1-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-1H-pyrazolo[3,4-d]pyrimidine-4,6-diyl]bis[2,2-diphenoxy-

Acetamide, N,N′-[1-(2-deoxy-β-D-erythro-pentofuranosyl)-1H-pyrazolo[3,4-d]pyrimidine-4,6-diyl]bis[2,2-diphenoxy-

Cytidine, N-acetyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[2-(methyldiphenylsilyl)ethyl bis(1-methylethyl)phosphoramidite]

Guanosine, N-acetyl-2′-deoxy-P(O)-[2-(methyldiphenylsilyl)ethyl]-P-thiocytidylyl-(3′→5′)-P(O)-[2-(methyldiphenylsilyl)ethyl]-P-thiothymidylyl-(3′→5′)-2′-deoxy-P(O)-[2-(methyldiphenylsilyl)ethyl]-N-(2-methyl-1-oxopropyl)-P-thioguanylyl-(3′→5′)-2′-deoxy-N-(2-methyl-1-oxopropyl)-, 3′-(4-oxopentanoate)

Guanosine, P(O)-[2-(methyldiphenylsilyl)ethyl]-P-thiothymidylyl-(3′→5′)-2′-deoxy-P(O)-[2-(methyldiphenylsilyl)ethyl]-N-(2-methyl-1-oxopropyl)-P-thioguanylyl-(3′→5′)-2′-deoxy-N-(2-methyl-1-oxopropyl)-, 3′-(4-oxopentanoate)

Guanosine, 2′-deoxy-P(O)-[2-(methyldiphenylsilyl)ethyl]-N-(2-methyl-1-oxopropyl)-P-thioguanylyl-(3′→5′)-2′-deoxy-N-(2-methyl-1-oxopropyl)-, 3′-(4-oxopentanoate)

Thymidine, 2′-deoxy-P(O)-[2-(methyldiphenylsilyl)ethyl]-N-(2-methyl-1-oxopropyl)-P-thioguanylyl-(3′→5′)-P(O)-[2-(methyldiphenylsilyl)ethyl]-P-thiothymidylyl-(3′→5′)-

Thymidine, 2′-deoxy-P(O)-[2-(methyldiphenylsilyl)ethyl]-N-(2-methyl-1-oxopropyl)-P-thioguanylyl-(3′→5′)-P(O)-[2-(methyldiphenylsilyl)ethyl]-P-thiothymidylyl-(3′→5′)-, 3′-(4-oxopentanoate)

Thymidine, P(O)-[2-(methyldiphenylsilyl)ethyl]-P-thiothymidylyl-(3′→5′)-, 3′-(4-oxopentanoate)

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P(O)-[2-(methyldiphenylsilyl)ethyl]-P-thiothymidylyl-(3′→5′)-