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

Methanimidamide, N′-[1-(2-deoxy-β-D-erythro-pentofuranosyl)-3-(2-furanyl)-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethyl-, (1E)-

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

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

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

1H-Pyrazolo[3,4-d]pyrimidine-4,6-diamine, 1-(2-deoxy-β-D-erythro-pentofuranosyl)-3-(3-methoxy-1-propynyl)-

(1E,1′E)-N′,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-propyn-1-yl)-1H-pyrazolo[3,4-d]pyrimidine-4,6-diyl]bis[N,N-bis(2-methylpropyl)methanimidamide]

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

(1E,1′E)-N′,N′′′-[1-(2-Deoxy-β-D-erythro-pentofuranosyl)-3-(1-propyn-1-yl)-1H-pyrazolo[3,4-d]pyrimidine-4,6-diyl]bis[N,N-bis(1-methylethyl)methanimidamide]

1H-Pyrazolo[3,4-d]pyrimidine-4,6-diamine, 1-(2-deoxy-β-D-erythro-pentofuranosyl)-3-(1-propynyl)-

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

N-[3-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-6-[(E)-[(dimethylamino)methylene]amino]-4,5-dihydro-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-3-yl]propyl]-2,2,2-trifluoroacetamide

N-[3-[1-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-[(E)-[(dimethylamino)methylene]amino]-4,5-dihydro-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-3-yl]propyl]-2,2,2-trifluoroacetamide

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

Acetamide, N-[3-[6-amino-1-(2-deoxy-β-D-erythro-pentofuranosyl)-4,5-dihydro-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-2-propynyl]-2,2,2-trifluoro-

Benzoic acid, 4-methyl-, 3-[1-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4-[(E)-[(dimethylamino)methylene]amino]-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-2-propynyl ester

Benzoic acid, 4-methyl-, 3-[1-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-4-[(E)-[(dimethylamino)methylene]amino]-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-2-propynyl ester

Benzoic acid, 4-methyl-, 3-[1-(2-deoxy-β-D-erythro-pentofuranosyl)-4-[(E)-[(dimethylamino)methylene]amino]-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-2-propynyl ester

Benzoic acid, 4-methyl-, 3-[4-amino-1-(2-deoxy-β-D-erythro-pentofuranosyl)-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-2-propynyl ester

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