5-[(1R)-2-(Cyclohexylamino)-1-[(4-methylphenyl)(1-oxo-2-propyn-1-yl)amino]-2-oxoethyl]-2'-deoxyuridine

5-[(1S)-1-[(4-Chlorobenzoyl)(3-nitrophenyl)amino]-2-(cyclohexylamino)-2-oxoethyl]-2'-deoxyuridine

5-[(1R)-1-[(4-Chlorobenzoyl)(3-nitrophenyl)amino]-2-(cyclohexylamino)-2-oxoethyl]-2'-deoxyuridine

5-[(1S)-2-(Cyclohexylamino)-1-[(4-methylbenzoyl)(4-methylphenyl)amino]-2-oxoethyl]-2'-deoxyuridine

5-[(1R)-2-(Cyclohexylamino)-1-[(4-methylbenzoyl)(4-methylphenyl)amino]-2-oxoethyl]-2'-deoxyuridine

5-[(1S)-1-[(4-Chlorobenzoyl)(4-methylphenyl)amino]-2-(cyclohexylamino)-2-oxoethyl]-2'-deoxyuridine

5-[(1R)-1-[(4-Chlorobenzoyl)(4-methylphenyl)amino]-2-(cyclohexylamino)-2-oxoethyl]-2'-deoxyuridine

5-[(1S)-2-(Cyclohexylamino)-1-[(4-methylbenzoyl)phenylamino]-2-oxoethyl]-2'-deoxyuridine

5-[(1R)-2-(Cyclohexylamino)-1-[(4-methylbenzoyl)phenylamino]-2-oxoethyl]-2'-deoxyuridine

5-[(1S)-1-[Benzoyl(4-chlorophenyl)amino]-2-(cyclohexylamino)-2-oxoethyl]-2'-deoxyuridine

5-[(1R)-1-[Benzoyl(4-chlorophenyl)amino]-2-(cyclohexylamino)-2-oxoethyl]-2'-deoxyuridine

5-[(1S)-1-(Benzoylphenylamino)-2-(cyclohexylamino)-2-oxoethyl]-2'-deoxyuridine

5-[(1R)-1-(Benzoylphenylamino)-2-(cyclohexylamino)-2-oxoethyl]-2'-deoxyuridine

5-[1-[Benzoyl(4-methylphenyl)amino]-2-oxo-2-[(phenylmethyl)amino]ethyl]-2'-deoxyuridine

5-[(1S)-1-[(4-Chlorobenzoyl)phenylamino]-2-oxo-2-[(phenylmethyl)amino]ethyl]-2'-deoxyuridine

5-[(1R)-1-[(4-Chlorobenzoyl)phenylamino]-2-oxo-2-[(phenylmethyl)amino]ethyl]-2'-deoxyuridine

5-[(1S)-1-(Benzoylphenylamino)-2-oxo-2-[(phenylmethyl)amino]ethyl]-2'-deoxyuridine

5-[(1R)-1-(Benzoylphenylamino)-2-oxo-2-[(phenylmethyl)amino]ethyl]-2'-deoxyuridine

5-[3-[[6-[(9-Cyano-8-oxo-8H-acenaphtho[1,2-b]pyrrol-3-yl)amino]-1-oxohexyl]amino]-1-propyn-1-yl]-2',3'-dideoxyuridine 5'-(tetrahydrogen triphosphate)

5-[3-[[6-[(9-Cyano-8-oxo-8H-acenaphtho[1,2-b]pyrrol-3-yl)amino]-1-oxohexyl]amino]-1-propyn-1-yl]-2'-deoxyuridine 5'-(tetrahydrogen triphosphate)