5-[[(3-Methyl-2-buten-1-yl)(2,2,2-trifluoroacetyl)amino]methyl]-2',3'-O-(1-methylethylidene)-2-thiouridine

4'-C-Fluoro-2'-C-methyluridine

5'-Deoxy-4'-C-fluoro-5'-iodouridine

4'-C-Fluoro-2',3'-O-(methoxymethylene)-2'-C-methyluridine

4'-C-Fluoro-2'-C-methyluridine 5'-(tetrahydrogen triphosphate)

(2'R)-2',5'-Dideoxy-2'-fluoro-4'-C-fluoro-5'-iodo-2'-methyluridine

(2'R)-2'-Deoxy-2'-fluoro-4'-C-fluoro-2'-methylcytidine

(2'R)-2',5'-Dideoxy-2'-fluoro-4'-C-fluoro-5'-iodo-N-[(4-methoxyphenyl)diphenylmethyl]-2'-methylguanosine

(2'R)-2',5'-Dideoxy-2'-fluoro-5'-iodo-N-[(4-methoxyphenyl)diphenylmethyl]-2'-methylguanosine

(2'R)-2'-Deoxy-2'-fluoro-N-[(4-methoxyphenyl)diphenylmethyl]-2'-methylguanosine

(2'R)-2'-Deoxy-2'-fluoro-4'-C-fluoro-2'-methylguanosine

(2'R)-2'-Deoxy-2'-fluoro-4'-C-fluoro-N-[(4-methoxyphenyl)diphenylmethyl]-2'-methylguanosine

(2'R)-2',5'-Dideoxy-6-O-ethyl-2'-fluoro-4'-C-fluoro-5'-iodo-N-[(4-methoxyphenyl)diphenylmethyl]-2'-methylguanosine

(2'R)-2',5'-Dideoxy-6-O-ethyl-2'-fluoro-5'-iodo-N-[(4-methoxyphenyl)diphenylmethyl]-2'-methylguanosine(2'R)-2',5'-Dideoxy-6-O-ethyl-2'-fluoro-5'-iodo-N-[(4-methoxyphenyl)diphenylmethyl]-2'-methylguanosine

(2'R)-2'-Deoxy-6-O-ethyl-2'-fluoro-N-[(4-methoxyphenyl)diphenylmethyl]-2'-methylguanosine

(2'R)-2',5'-Dideoxy-6-O-ethyl-2'-fluoro-4'-C-fluoro-5'-iodo-N-[(4-methoxyphenyl)diphenylmethyl]-3'-O-[(4-methoxyphenyl)diphenylmethyl]-2'-methylguanosine

(2'R)-2'-Deoxy-6-O-ethyl-2'-fluoro-4'-C-fluoro-N-[(4-methoxyphenyl)diphenylmethyl]-2'-methylguanosine

6-O-Ethyl-N-[(4-methoxyphenyl)diphenylmethyl]-2'-C-methylguanosine

4'-C-Fluoro-N-[(4-methoxyphenyl)diphenylmethyl]-2'-C-methylguanosine

(2'R)-2'-Deoxy-6-O-ethyl-2'-fluoro-4'-C-fluoro-N-[(4-methoxyphenyl)diphenylmethyl]-3'-O-[(4-methoxyphenyl)diphenylmethyl]-2'-methylguanosine