2,5-dimethyl-3-(4-methylphenyl)pyrrolo[2,3-d]pyrimidin-4-amine

3-(4-ethylphenyl)-2,5-dimethylpyrrolo[2,3-d]pyrimidin-4-amine

3-(4-butylphenyl)-2,5-dimethylpyrrolo[2,3-d]pyrimidin-4-amine

3-(2,6-dimethylphenyl)-2,5-dimethylpyrrolo[2,3-d]pyrimidin-4-amine