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

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

N-[[P(S),2′R]-2′-Deoxy-3-[[1,4-dioxo-4-(phenylmethoxy)butoxy]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-3-[[1,4-dioxo-4-(phenylmethoxy)butoxy]methyl]-2′-fluoro-2′-methyl-3′-O-(triethylsilyl)uridine

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

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

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

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

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

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

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

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

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

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

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

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

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

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