3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-1,3-dihydro-6-methyl-2H-pyrrolo[2,3-d]pyrimidin-2-one

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-O-2-propen-1-yl-β-D-ribofuranosyl]-1,3-dihydro-6-methyl-2H-pyrrolo[2,3-d]pyrimidin-2-one

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-O-methyl-β-D-ribofuranosyl]-1,3-dihydro-6-methyl-2H-pyrrolo[2,3-d]pyrimidin-2-one

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-β-D-ribofuranosyl]-1,3-dihydro-6-methyl-2H-pyrrolo[2,3-d]pyrimidin-2-one

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-2-fluoro-β-D-ribofuranosyl]-1,3-dihydro-6-methyl-2H-pyrrolo[2,3-d]pyrimidin-2-one

1,3-Dihydro-6-methyl-3-(2-O-2-propen-1-yl-β-D-ribofuranosyl)-2H-pyrrolo[2,3-d]pyrimidin-2-one

1,3-Dihydro-6-methyl-3-(2-O-methyl-β-D-ribofuranosyl)-2H-pyrrolo[2,3-d]pyrimidin-2-one

3-(2-Deoxy-2-fluoro-β-D-ribofuranosyl)-1,3-dihydro-6-methyl-2H-pyrrolo[2,3-d]pyrimidin-2-one

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-O-2-propen-1-yl-β-D-ribofuranosyl]-6-methylfuro[2,3-d]pyrimidin-2(3H)-one

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-O-methyl-β-D-ribofuranosyl]-6-methylfuro[2,3-d]pyrimidin-2(3H)-one

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-β-D-ribofuranosyl]-6-methylfuro[2,3-d]pyrimidin-2(3H)-one

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-2-fluoro-β-D-ribofuranosyl]-6-methylfuro[2,3-d]pyrimidin-2(3H)-one

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-6-methylfuro[2,3-d]pyrimidin-2(3H)-one

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-methyl-5-(1-propynyl)-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-2′-fluoro-5-(1-propynyl)-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-(1-propynyl)-

6-Methyl-3-(2-O-2-propen-1-yl-β-D-ribofuranosyl)furo[2,3-d]pyrimidin-2(3H)-one

6-Methyl-3-(2-O-methyl-β-D-ribofuranosyl)furo[2,3-d]pyrimidin-2(3H)-one

6-Methyl-3-β-D-ribofuranosylfuro[2,3-d]pyrimidin-2(3H)-one

3-(2-Deoxy-2-fluoro-β-D-ribofuranosyl)-6-methylfuro[2,3-d]pyrimidin-2(3H)-one