2′,3′-O-(1-Methylethylidene)-5′-O-(2-oxido-4H-1,3,2-benzodioxaphosphorin-2-yl)uridine 4-[O-[bis(4-methoxyphenyl)phenylmethyl]oxime]

2′,3′-O-(1-Methylethylidene)uridine 4-[O-[bis(4-methoxyphenyl)phenylmethyl]oxime]

2′,3′-O-(1-Methylethylidene)uridine 4-oxime

1-[2,3,5-Tris-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-arabinofuranosyl]-2,4(1H,3H)-pyrimidinedione 4-oxime

1,2-Dihydro-2-oxo-1-[2,3,5-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-arabinofuranosyl]-4-pyrimidinyl 2,4,6-tris(1-methylethyl)benzenesulfonate

N-[[P(S)]-2′-Deoxy-2′,2′-difluoro-N-hydroxy-5′-cytidylyl]-L-alanine 1-methylethyl ester

N-[[P(R)]-2′-Deoxy-2′,2′-difluoro-N-hydroxy-5′-cytidylyl]-L-alanine 1-methylethyl ester

5′-Uridylic acid, 2′,3′-O-(1-methylethylidene)-, 2-cyanoethyl 3-(hexadecyloxy)propyl ester, 4-oxime, [P(S)]-

5′-Uridylic acid, 2′,3′-O-(1-methylethylidene)-, 2-cyanoethyl 3-(hexadecyloxy)propyl ester, 4-oxime, [P(R)]-

2-Cyanoethyl 3-(hexadecyloxy)propyl [P(S)]-2′,3′-O-(1-methylethylidene)-5′-cytidylate

2-Cyanoethyl 3-(hexadecyloxy)propyl 2′,3′-O-(1-methylethylidene)-5′-cytidylate

N-[[(Heptylamino)carbonyl]oxy]-2′,3′,5′-tris-O-[(1,1-dimethylethyl)dimethylsilyl]cytidine

N-[[P(S)]-N-Hydroxy-P-phenyl-5′-cytidylyl]-L-alanine 1-methylethyl ester

N-[[P(S)]-P-Phenyl-5′-cytidylyl]-L-alanine 1-methylethyl ester

N-[[P(R)]-N-Hydroxy-P-phenyl-5′-cytidylyl]-L-alanine 1-methylethyl ester

N-[[P(R)]-P-Phenyl-5′-cytidylyl]-L-alanine 1-methylethyl ester

N-[[P(S)]-2′,3′-O-(1-Methylethylidene)-P-phenyl-5′-cytidylyl]-L-alanine 1-methylethyl ester

N-[[P(R)]-2′,3′-O-(1-Methylethylidene)-P-phenyl-5′-cytidylyl]-L-alanine 1-methylethyl ester

N-[[P(S)]-N-Methoxy-2′-C-methyl-P-phenyl-5′-cytidylyl]-L-alanine 1-methylethyl ester

N-[[P(R)]-N-Methoxy-2′-C-methyl-P-phenyl-5′-cytidylyl]-L-alanine 1-methylethyl ester