4-N-(3,4-ethylenedioxyphenyl)amino-5-(2-methylphenyl)-7-(2',3'-O-isopropylidene-β-D-erythro-furanosyl)pyrrolo[2,3-d]pyrimidine

4-N-(3-ethoxyphenyl)amino-5-phenyl-7-(2',3'-O-isopropylidene-β-D-erythro-furanosyl)pyrrolo[2,3-d]pyrimidine

4-N-(2-methoxyphenyl)amino-5-(4-ethoxyphenyl)-7-(2',3'-O-isopropylidene-β-D-erythro-furanosyl)pyrrolo[2,3-d]pyrimidine

4-N-(4-fluorophenyl)amino-5-(3-aminophenyl)-7-(2',3'-O-isopropylidene-β-D-erythro-furanosyl)pyrrolo[2,3-d]pyrimidine

4-N-(2-methoxyphenyl)amino-5-iodo-7-(2',3'-O-isopropylidene-β-D-erythro-furanosyl)pyrrolo[2,3-d]pyrimidine