3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-5,6-dihydropyrido[2,3-d]pyrimidine-2,7(1H,3H)-dione

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-5,6-dihydropyrido[2,3-d]pyrimidine-2,7(1H,3H)-dione

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-5,6-dihydropyrido[2,3-d]pyrimidine-2,7(1H,3H)-dione

Cytidine, 5-(azidomethyl)-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine, α-azido-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-

3-(2-Deoxy-β-D-erythro-pentofuranosyl)-5,6-dihydropyrido[2,3-d]pyrimidine-2,7(1H,3H)-dione

3-[2-Deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-5,6-dihydropyrido[2,3-d]pyrimidine-2,7(1H,3H)-dione

Cytidine, 5-(azidomethyl)-2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

α-Azido-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]thymidine

5,6-Diamino-3-(2-deoxy-β-D-erythro-pentofuranosyl)-4(3H)-pyrimidinone

2,6-Diamino-3-(2-deoxy-β-D-erythro-pentofuranosyl)-4(3H)-pyrimidinone

N-[1-(2-Deoxy-β-D-erythro-pentofuranosyl)-1,2-dihydro-4-pyrimidinyl]acetamide

N-[8-Bromo-9-(5-O-phosphono-β-D-ribofuranosyl)-9H-purin-6-yl]-β-alanine

N-[8-Bromo-9-[5-O-[hydroxy(phosphonooxy)phosphinyl]-β-D-ribofuranosyl]-9H-purin-6-yl]-β-alanine

Guanosine, 2′-deoxy-, 5′→P′′-ester with thiotriphosphoric acid (HO2P(O)OP(O)(OH)OP(O)(OH)(SH))

Propanamide, N-[3-(2,5-dihydroxyphenyl)-2,3-dihydro-5-hydroxy-3-methyl-2-benzofuranyl]-N,2-dimethyl-, cis-

Propanamide, N-[3-(2,5-dihydroxyphenyl)-2,3-dihydro-5-hydroxy-3-methyl-2-benzofuranyl]-N-methyl-, cis-

Propanamide, N-[3-(2,5-dihydroxyphenyl)-2,3-dihydro-5-hydroxy-3-methyl-2-benzofuranyl]-N-ethyl-, cis-

Cytidine, 2′-deoxyadenylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxy-

Adenosine, adenylyl-(3′→5′)-[P(R)]-P-thioadenylyl-(3′→5′)-