O3-[N-(Methoxycarbonyl)-L-isoleucyl]-[P(S),2′R]-2′-deoxy-2′-fluoro-3-(hydroxymethyl)-2′-methyl-P-phenyl-5′-uridylyl-L-alanine 1-methylethyl ester

O3-[N-(Ethoxycarbonyl)-L-methionyl]-[P(S),2′R]-2′-deoxy-2′-fluoroo-3-(hydroxymethyl)-2′-methyl-P-phenyl-5′-uridylyl-L-alanine 1-methylethyl ester

O3-[4-Fluoroo-1-(methoxycarbonyl)prolyl]-[P(S),2′R]-2′-deoxy-2′-fluoroo-3-(hydroxymethyl)-2′-methyl-P-phenyl-5′-uridylyl-L-alanine 1-methylethyl ester

O3-[4-Methyl-N-(phenoxycarbonyl)prolyl]-[P(S),2′R]-2′-deoxy-2′-fluoroo-3-(hydroxymethyl)-2′-methyl-P-phenyl-5′-uridylyl-L-alanine 1-methylethyl ester

O3-[1-(Methoxycarbonyl)-4-(methoxymethyl)prolyl]-[P(S),2′R]-2′-deoxy-2′-fluoroo-3-(hydroxymethyl)-2′-methyl-P-phenyl-5′-uridylyl-L-alanine 1-methylethyl ester

O3-[1-(Methoxycarbonyl)-4-methylprolyl]-[P(S),2′R]-2′-deoxy-2′-fluoroo-3-(hydroxymethyl)-2′-methyl-P-phenyl-5′-uridylyl-L-alanine 1-methylethyl ester

O3-[1-(Ethoxycarbonyl)prolyl]-[P(S),2′R]-2′-deoxy-2′-fluoroo-3-(hydroxymethyl)-2′-methyl-P-phenyl-5′-uridylyl-L-alanine 1-methylethyl ester

N-[[P(S),2′R]-2′-Deoxy-3-[(3-ethoxy-1,4-dioxobutoxy)methyl]-2′-fluoro-2′-methyl-P-phenyl-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[[P(S),2′R]-2′-Deoxy-3-[[(diethoxyphosphinyl)oxy]methyl]-2′-fluoro-2′-methyl-P-phenyl-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[[P(S),2′R]-2′-Deoxy-5-[[[1,5-dioxo-4-[(1-oxobutoxy)methoxy]pentyl]oxy]methyl]-2′-fluoro-2′-methyl-P-phenyl-5′-uridylyl]-L-alanine 1-methylethyl ester

L-Alanine, N-[[P(S)]-hydroxyphenoxyphosphinyl]-, 1-methylethyl ester, 5′-ester with (2′R)-2′-deoxy-2′-fluoro-2′-methyl-3-[[1-oxo-4-(1H-pyrrolo[2,3-b]pyridin-1-yl)butoxy]methyl]uridine

N-[[P(S),2′R]-2′-Deoxy-2′-fluoro-2′-methyl-3-[[1-oxo-4-(2-pyridinylamino)butoxy]methyl]-P-phenyl-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[[P(S),2′R]-2′-Deoxy-2′-fluoro-2′-methyl-3-[[3-(4-mophorlinyl)-1-oxopropoxy]methyl]-P-phenyl-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[[P(S),2′R]-2′-Deoxy-3-[[4-(dimethylamino)-1-oxobutoxy]methyl]-2′-fluoro-2′-methyl-P-phenyl-5′-uridylyl]-L-alanine 1-methylethyl ester

N-[[P(S),2′R]-2′-Deoxy-2′-fluoro-2′-methyl-P-phenyl-3-[[[2-(1-pyrrolidinyl)acetyl]oxy]methyl]-5′-uridylyl]-L-alanine 1-methylethyl ester

O3-(N,N-Dimethylglycyl)-[P(S),2′R]-2′-deoxy-2′-fluoro-3-(hydroxymethyl)-2′-methyl-P-phenyl-5′-uridylyl-L-alanine 1-methylethyl ester

O3-[N-(Methoxycarbonyl)-3-(tetrahydro-2H-pyran-4-yl)alanyl]-[P(S),2′R]-2′-deoxy-2′-fluoroo-3-(hydroxymethyl)-2′-methyl-P-phenyl-5′-uridylyl-L-alanine 1-methylethyl ester

O3-[N-(Methoxycarbonyl)-O-methylseryl]-[P(S),2′R]-2′-deoxy-2′-fluoro-3-(hydroxymethyl)-2′-methyl-P-phenyl-5′-uridylyl-L-alanine 1-methylethyl ester

O3-[N-(Methoxycarbonyl)-3-(2-pyridinyl)-L-alanyl]-[P(S),2′R]-2′-deoxy-2′-fluoroo-3-(hydroxymethyl)-2′-methyl-P-phenyl-5′-uridylyl-L-alanine 1-methylethyl ester