Substituted 5,7-diphenyl-pyrrolo[2,3d]pyrimidines: potent inhibitors of the tyrosine kinase c-Src

5,7-Diphenyl-pyrrolo[2,3d]pyrimidines represent a new class of highly potent inhibitors of the tyrosine kinase c-Src (IC50<50 nM) with specificity against a panel of different tyrosine kinases. The substitution pattern on the two phenyl rings determines potency and specificity and provides a means to modulate cellular activity.