Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-O-[[4-(hydroxymethyl)phenyl]bis(1-methylethyl)silyl]-

Adenosine, 3′-O-[[4-[(acetyloxy)methyl]phenyl]bis(1-methylethyl)silyl]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-

Thymidine, 3′-O-[[4-[(acetyloxy)methyl]phenyl]bis(1-methylethyl)silyl]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-

Cytidine, N-benzoyl-2′-C-methyl-, 3′,5′-dibenzoate

N-[1-(3,5-Di-O-benzoyl-2-C-methyl-β-D-arabinofuranosyl)-1,2-dihydro-2-oxo-4-pyrimidinyl]benzamide

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-5,6-bis[4-(3,3-dimethylbutyl)phenyl]furo[2,3-d]pyrimidin-2(3H)-one

6-(4-Cyclohexylphenyl)-3-(2-deoxy-β-D-erythro-pentofuranosyl)furo[2,3-d]pyrimidin-2(3H)-one

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-[4-(3,3-dimethylbutyl)phenyl]furo[2,3-d]pyrimidin-2(3H)-one

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-[4-(2,2-dimethylpropyl)phenyl]furo[2,3-d]pyrimidin-2(3H)-one

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-[4-(1,1-dimethylethyl)phenyl]furo[2,3-d]pyrimidin-2(3H)-one

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-[4-(4-methylpentyl)phenyl]furo[2,3-d]pyrimidin-2(3H)-one

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-[4-(3-methylbutyl)phenyl]furo[2,3-d]pyrimidin-2(3H)-one

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-[4-(2-methylpropyl)phenyl]furo[2,3-d]pyrimidin-2(3H)-one

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-[4-(1-methylethyl)phenyl]furo[2,3-d]pyrimidin-2(3H)-one

N′-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-5-bromo-7H-pyrazolo[3,4-d]-1,2,3-triazin-4-yl]-N,N-dimethylmethanimidamide

N′-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-5-bromo-7H-pyrazolo[3,4-d]-1,2,3-triazin-4-yl]-N,N-dimethylmethanimidamide

N′-[5-Bromo-7-(2-deoxy-β-D-erythro-pentofuranosyl)-7H-pyrazolo[3,4-d]-1,2,3-triazin-4-yl]-N,N-dimethylmethanimidamide

9-Bromo-7-(2-deoxy-β-D-erythro-pentofuranosyl)-7H-imidazo[1,2-c]pyrazolo[4,3-e][1,2,3]triazine

1H-Pyrazol-5-amine, 3-bromo-1-(2-deoxy-β-D-erythro-pentofuranosyl)-4-(1H-imidazol-4-yl)-

9-Bromo-7-(2-deoxy-β-D-erythro-pentofuranosyl)-7H-imidazo[1,2-c]pyrazolo[4,3-e]pyrimidine