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

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

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

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

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