3′-Deoxy-3′-[[(2S)-4-methyl-1-oxo-2-[[(2-propen-1-ylamino)thioxomethyl]amino]pentyl]amino]thymidine

3-[[1-[2,5-Anhydro-4-C-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-α-L-lyxofuranosyl]-1,4-dihydro-5-methyl-4-oxo-2-pyrimidinyl]seleno]propanenitrile

3-[[1-[2,5-Anhydro-4-C-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-α-L-lyxofuranosyl]-1,4-dihydro-5-methyl-4-oxo-2-pyrimidinyl]seleno]propanenitrile

1-[2,5-Anhydro-4-C-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-α-L-lyxofuranosyl]-2,3-dihydro-5-methyl-2-selenoxo-4(1H)-pyrimidinone

1-[2,5-Anhydro-4-C-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-α-L-lyxofuranosyl]-5-methyl-2-(methylthio)-4(1H)-pyrimidinone

1-[2,5-Anhydro-4-C-(hydroxymethyl)-α-L-lyxofuranosyl]-2,3-dihydro-5-methyl-2-thioxo-4(1H)-pyrimidinone

1-[3-O-Acetyl-4-C-[(acetyloxy)methyl]-2,5-anhydro-α-L-lyxofuranosyl]-4-(2,6-dimethylphenoxy)-5-methyl-2(1H)-pyrimidinethione

1-[3-O-Acetyl-4-C-[(acetyloxy)methyl]-2,5-anhydro-α-L-lyxofuranosyl]-4-(2,6-dimethylphenoxy)-5-methyl-2(1H)-pyrimidinone

2′-Deoxy-6-O-[2-[(3-methylbutyl)amino]-2-oxoethyl]guanosine

2′-Deoxy-6-O-[2-(2-propen-1-ylamino)-2-oxoethyl]guanosine

2′-Deoxy-6-O-[2-[(2-aminoethyl)amino]-2-oxoethyl]guanosine