6-(1-Ethoxyethenyl)-9-(2,3,5-tri-O-benzoyl-2-C-methyl-β-D-ribofuranosyl)-9H-purin-2-amine

6-(1-Ethoxyethenyl)-9-(2-C-methyl-β-D-ribofuranosyl)-9H-purin-2-amine

6-Iodo-9-(2,3,5-tri-O-benzoyl-2-C-methyl-β-D-ribofuranosyl)-9H-purin-2-amine

1,1′′-(1,4-Butanediyl)bis[7′-amino-1,2,2′,3′,4′,8′-hexahydro-2,2′,4′-trioxo-8′-(9-β-D-ribofuranosyl-9H-purin-6-yl)spiro[3H-indole-3,5′(1′H)-pyrido[2,3-d]pyrimidine]-6′-carbonitrile]

1,1′′-(1,3-Propanediyl)bis[7′-amino-1,2,2′,3′,4′,8′-hexahydro-2,2′,4′-trioxo-8′-(9-β-D-ribofuranosyl-9H-purin-6-yl)spiro[3H-indole-3,5′(1′H)-pyrido[2,3-d]pyrimidine]-6′-carbonitrile]

2,2′′-[1,4-Butanediylbis(7′-amino-6′-cyano-1,1′,2,2′,3′,4′-hexahydro-2,2′,4′-trioxospiro[3H-indole-3,5′(8′H)-pyrido[2,3-d]pyrimidine]-1,8′-diyl)]bis[inosine]

2,2′′-[1,3-Propanediylbis(7′-amino-6′-cyano-1,1′,2,2′,3′,4′-hexahydro-2,2′,4′-trioxospiro[3H-indole-3,5′(8′H)-pyrido[2,3-d]pyrimidine]-1,8′-diyl)]bis[inosine]

7′-Amino-1,2′,3,3′,4′,8′-hexahydro-1,2′,3,4′-tetraoxo-8′-(9-β-D-ribofuranosyl-9H-purin-6-yl)spiro[2H-indene-2,5′(1′H)-pyrido[2,3-d]pyrimidine]-6′-carbonitrile