Guanosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-deoxo-P,2′-dideoxy-P-fluorocytidylyl-(3′→5′)-2′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-N-(2-methyl-1-oxopropyl)-

Cytidine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-, 3′-(4-nitrophenyl phosphorofluoridite)

Adenosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-, 3′-[4-fluorophenyl bis(1-methylethyl)phosphoramidite]

Guanosine, 8-[(2-amino-6,7-dihydro-6-oxo-1H-purin-8-yl)oxy]-

1-β-D-Arabinofuranosyl-5-(2,2-dibromoethenyl)-2,4(1H,3H)-pyrimidinedione

2-Amino-8-[3,5-bis-O-(4-chlorobenzoyl)-2-deoxy-β-D-erythro-pentofuranosyl]-4-[2-(4-nitrophenyl)ethoxy]-6-phenyl-7(8H)-pteridinone

Adenosine 5′-(trihydrogen diphosphate), P′-anhydride with 2,5-dihydro-2,2,5,5-tetramethyl-3-(phosphonomethyl)-1H-pyrrol-1-yloxy

2-Amino-8-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4-[2-(4-nitrophenyl)ethoxy]-6-phenyl-7(8H)-pteridinone

2-Amino-8-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-4-[2-(4-nitrophenyl)ethoxy]-6-phenyl-7(8H)-pteridinone

8-[3,5-Bis-O-(4-chlorobenzoyl)-2-deoxy-β-D-erythro-pentofuranosyl]-2-(methylsulfonyl)-4-[2-(4-nitrophenyl)ethoxy]-6-phenyl-7(8H)-pteridinone

8-[3,5-Bis-O-(4-chlorobenzoyl)-2-deoxy-β-D-erythro-pentofuranosyl]-2-(methylthio)-4-[2-(4-nitrophenyl)ethoxy]-6-phenyl-7(8H)-pteridinone

4,7(1H,8H)-Pteridinedione, 8-[3,5-bis-O-(4-chlorobenzoyl)-2-deoxy-β-D-erythro-pentofuranosyl]-2-(methylthio)-6-phenyl-

2-Amino-8-(2-deoxy-β-D-erythro-pentofuranosyl)-4-[2-(4-nitrophenyl)ethoxy]-6-phenyl-7(8H)-pteridinone

2-Amino-8-[3,5-bis-O-(4-chlorobenzoyl)-2-deoxy-β-D-erythro-pentofuranosyl]-6-phenyl-4-(phenylmethoxy)-7(8H)-pteridinone

2-Amino-8-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4-[2-(4-nitrophenyl)ethoxy]-7(8H)-pteridinone

2-Amino-8-[3,5-bis-O-(4-chlorobenzoyl)-2-deoxy-β-D-erythro-pentofuranosyl]-4-[2-(4-nitrophenyl)ethoxy]-7(8H)-pteridinone

8-[3,5-Bis-O-(4-chlorobenzoyl)-2-deoxy-β-D-erythro-pentofuranosyl]-2-(methylthio)-4-[2-(4-nitrophenyl)ethoxy]-7(8H)-pteridinone

N′-[8-[3,5-Bis-O-(4-chlorobenzoyl)-2-deoxy-β-D-erythro-pentofuranosyl]-7,8-dihydro-7-oxo-4-(phenylmethoxy)-2-pteridinyl]-N,N-dimethylmethanimidamide

Phosphonamidous acid, P-[(1R,3R,4R)-1-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-3-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-2-oxa-5-azabicyclo[2.2.1]hept-5-yl]-N,N-bis(1-methylethyl)-, 2-cyanoethyl ester

1-[(1R,3R,4R)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-5-(2,2,2-trifluoroacetyl)-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione