2'-Deoxy-4'-C-ethynyl-3'-O-[(4-methoxyphenyl)methyl]adenosine

1-[4-C-[(Benzoyloxy)methyl]-2,5,6-trideoxy-α-L-erythro-hex-5-ynofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

2'-Deoxy-4'-C-ethynyl-2',2'-difluoro-5'-cytidylicacid

Uridine,4'-C-ethynyl-3',5'-bis-O-(phenylmethyl)-2-thio-,2'-acetate

1-[5,6-Dideoxy-4-C-[(phenylmethoxy)methyl]-3-O-(phenylmethyl)-α-L-xylo-hex-5-ynofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

Uridine,4'-C-ethynyl-5-methyl-3',5'-bis-O-(phenylmethyl)-,2'-acetate

Uridine,2'-bromo-2'-deoxy-4'-C-[(triethylsilyl)ethynyl]-,3',5'-diacetate

Uridine,2'-deoxy-5-fluoro-4'-C-[(triethylsilyl)ethynyl]-,3',5'-diacetate

2'-Deoxy-4'-C-ethynyl-2',2'-difluorocytidine'-(tetrahydrogentriphosphate)

1-[2-Deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-5-O-[(1,1-dimethylethyl)diphenylsilyl]-4-C-ethynyl-2-fluoro-β-D-arabinofuranosyl

Uridine,5-methyl-3',5'-bis-O-(phenylmethyl)-4'-C-[(triethylsilyl)ethynyl]-

2'-Deoxy-N-[(1,1-dimethylethoxy)carbonyl]-4'-C-ethynyl-2-fluoroadenosine

2(1H)-Pyrimidinone,1-[3,5-di-O-acetyl-2-deoxy-4-C-[(triethylsilyl)ethynyl]-β-D-erythro-pentofuranosyl]-4-(1H-1,2,4-triazol-1-yl)

1-[5-O-Benzoyl-2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-4-C-[2-(trimethylsilyl)ethynyl]-β-D-threo-pentofuranosyl]-5-methyl-

2',3'-O-Cyclopentylidene-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-4'-C-ethynyluridine

4-Amino-1-[2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-5-O-[(1,1-dimethylethyl)diphenylsilyl]-4-C-ethynyl-2-fluoro-β-D-arabinofuranosyl]-2(1H )-pyrimidinone

Adenosine, 2'-deoxy-4'-C-ethynyl-2-fluoro-, 3'-heptanoate 5'-pentanoate

Adenosine, 2'-deoxy-4'-C-ethynyl-2-fluoro-, 5'-pentanoate 3'-tridecanoate

2',3'-O-Cyclopentylidene-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-4'-C-ethynylcytidine

2'-Deoxy-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-4'-C-ethynyl-2',2'-difluorouridine