5-[Bis(4-methoxyphenyl)phenylmethyl]-3-(2-deoxy-β-D-erythro-pentofuranosyl)-6-[4-[2-[4-(dimethylamino)phenyl]diazenyl]phenyl]-1,3-dihydro-2H-pyrrolo[2,3-d]pyrimidin-2-one

Cytidine, N-benzoyl-2′-deoxy-5-iodo-, 3′,5′-diacetate

5-[Bis(4-methoxyphenyl)phenylmethyl]-3-(2-deoxy-β-D-erythro-pentofuranosyl)-6-(2-furanyl)-1,3-dihydro-2H-pyrrolo[2,3-d]pyrimidin-2-one

6-(2-Benzofuranyl)-5-[bis(4-methoxyphenyl)phenylmethyl]-3-(2-deoxy-β-D-erythro-pentofuranosyl)-1,3-dihydro-2H-pyrrolo[2,3-d]pyrimidin-2-one

5-[Bis(4-methoxyphenyl)phenylmethyl]-3-(2-deoxy-β-D-erythro-pentofuranosyl)-1,3-dihydro-6-(4-nitrophenyl)-2H-pyrrolo[2,3-d]pyrimidin-2-one

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-[4-[2-[4-(dimethylamino)phenyl]diazenyl]phenyl]-1,3-dihydro-2H-pyrrolo[2,3-d]pyrimidin-2-one

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-(2-furanyl)-1,3-dihydro-2H-pyrrolo[2,3-d]pyrimidin-2-one

6-(2-Benzofuranyl)-3-(2-deoxy-β-D-erythro-pentofuranosyl)-1,3-dihydro-2H-pyrrolo[2,3-d]pyrimidin-2-one

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-1,3-dihydro-6-(4-nitrophenyl)-2H-pyrrolo[2,3-d]pyrimidin-2-one

5-[Bis(4-methoxyphenyl)phenylmethyl]-3-(2-deoxy-β-D-erythro-pentofuranosyl)-1,3-dihydro-6-phenyl-2H-pyrrolo[2,3-d]pyrimidin-2-one

Adenylyl-(3′→5′)-guanylyl-(3′→5′)-3′-cytidylic acid

Adenylyl-(3′→5′)-3′-uridylic acid

N-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4,7-dihydro-4-oxo-5-(1-phenyl-1H-1,2,3-triazol-4-yl)-3H-pyrrolo[2,3-d]pyrimidin-2-yl]-2-methylpropanamide

N-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-4,7-dihydro-4-oxo-5-(1-phenyl-1H-1,2,3-triazol-4-yl)-3H-pyrrolo[2,3-d]pyrimidin-2-yl]-2-methylpropanamide

2-Amino-7-(2-deoxy-β-D-erythro-pentofuranosyl)-3,7-dihydro-5-(1-phenyl-1H-1,2,3-triazol-4-yl)-4H-pyrrolo[2,3-d]pyrimidin-4-one

N-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-4,7-dihydro-4-oxo-5-phenyl-3H-pyrrolo[2,3-d]pyrimidin-2-yl]-2-methylpropanamide

N-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4,7-dihydro-4-oxo-5-phenyl-3H-pyrrolo[2,3-d]pyrimidin-2-yl]-2-methylpropanamide

N-[7-(2-Deoxy-β-D-erythro-pentofuranosyl)-4,7-dihydro-4-oxo-5-phenyl-3H-pyrrolo[2,3-d]pyrimidin-2-yl]-2-methylpropanamide

2-Amino-7-(2-deoxy-β-D-erythro-pentofuranosyl)-3,7-dihydro-5-phenyl-4H-pyrrolo[2,3-d]pyrimidin-4-one

N-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4,7-dihydro-4-oxo-6-phenyl-3H-pyrrolo[2,3-d]pyrimidin-2-yl]-2-methylpropanamide