2′-Deoxy-5-(1-octadecyn-1-yl)cytidine

8-(1-Eicosyn-1-yl)adenosine

2′-Deoxy-8-(1-octadecyn-1-yl)adenosine

2′-Deoxy-8-(1-tetradecyn-1-yl)adenosine

8-(1-Tetradecyn-1-yl)adenosine

2′-Deoxy-5-[3-[(tetrahydro-2H-pyran-2-yl)oxy]-1-propyn-1-yl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]uridine

Uridine, 5-(4-hydroxy-1-butyn-1-yl)-, 2′,3′,5′-triacetate

5-(1-Octadecyn-1-yl)-2′,3′,5′-tris-O-(phenylmethyl)uridine

Uridine, 5-(4-bromo-1-butyn-1-yl)-, 2′,3′,5′-triacetate

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-(1-octadecyn-1-yl)uridine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[3-[[[5-(dimethylamino)-1-naphthalenyl]sulfonyl]octadecylamino]-1-propyn-1-yl]uridine

2′-Deoxy-5-[(17α)-17-hydroxy-3-oxopregn-4-en-20-yn-21-yl]uridine

5-[3-[(1-Oxohexadecyl)oxy]-1-propyn-1-yl]uridine

N-[[P(S)]-P-[1-[(1,1-Dimethylethoxy)carbonyl]-1H-indol-5-yl]-2′-C-methyl-5′-cytidylyl]-L-alanine ethyl ester

N-[[P(S)]-2′-C-Methyl-P-phenyl-5′-cytidylyl]-L-alanine 2-propylpentyl ester

N-[[P(S)]-2′-C-Methyl-P-phenyl-5′-cytidylyl]-L-alanine 2-ethylbutyl ester

N-(2′-C-Methyl-P-1-naphthalenyl-5′-cytidylyl)-L-alanine methyl ester

N-[[P(S)]-2′-C-Methyl-P-1-naphthalenyl-5′-cytidylyl]-L-alanine butyl ester

N-[[P(S)]-P-[4-Chloro-5-methyl-2-(1-methylethyl)phenyl]-2′-C-methyl-5′-cytidylyl]-L-alanine ethyl ester

N-[P-(4-Chlorophenyl)-2′-C-methyl-5′-cytidylyl]-L-alanine methyl ester