N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-α-D-erythro-pentofuranosyl]-1,2-dihydro-5-(1,7-octadiyn-1-yl)-2-oxo-4-pyrimidinyl]-N,N-dibutylmethanimidamide

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-α-D-erythro-pentofuranosyl]-1,2-dihydro-5-(1,7-octadiyn-1-yl)-2-oxo-4-pyrimidinyl]-N,N-dibutylmethanimidamide

4-Amino-1-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-α-D-erythro-pentofuranosyl]-5-(1,7-octadiyn-1-yl)-2(1H)-pyrimidinone

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-α-D-erythro-pentofuranosyl]-1,2-dihydro-5-iodo-2-oxo-4-pyrimidinyl]-N,N-dibutylmethanimidamide

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-α-D-erythro-pentofuranosyl]-1,2-dihydro-5-iodo-2-oxo-4-pyrimidinyl]-N,N-dibutylmethanimidamide

4-Amino-1-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-α-D-erythro-pentofuranosyl]-5-iodo-2(1H)-pyrimidinone

4-Amino-1-[2-deoxy-3,5-bis-O-(4-methylbenzoyl)-α-D-erythro-pentofuranosyl]-5-iodo-2(1H)-pyrimidinone

4-Amino-1-(2-deoxy-α-D-erythro-pentofuranosyl)-5-(1,7-octadiyn-1-yl)-2(1H)-pyrimidinone

4-Amino-1-(2-deoxy-α-D-erythro-pentofuranosyl)-5-iodo-2(1H)-pyrimidinone

2,6-Bis(4-phenyl-1H-1,2,3-triazol-1-yl)-9-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-9H-purine

9-(2,3,5-Tri-O-acetyl-β-D-ribofuranosyl)-2,6-bis[4-[4-(trifluoromethyl)phenyl]-1H-1,2,3-triazol-1-yl]-9H-purine

2-[4-(4-Bromophenyl)-1H-1,2,3-triazol-1-yl]-6-(1-piperidinyl)-9-β-D-ribofuranosyl-9H-purine

2-[4-(4-Fluorophenyl)-1H-1,2,3-triazol-1-yl]-6-(1-pyrrolidinyl)-9-β-D-ribofuranosyl-9H-purine

6-(1-Pyrrolidinyl)-9-β-D-ribofuranosyl-2-[4-[4-(trifluoromethyl)phenyl]-1H-1,2,3-triazol-1-yl]-9H-purine