Abstract: The present invention relates to triaminopyrimidine derivatives of formula (I) where Y, R3, W, R4a, R5a, R4b, R5b, n and m are variable. These compounds have CDC25 phosphatase-inhibiting activity and can therefore be used as drugs in diseases in which CDC25 phosphatases are involved. The invention also relates to pharmaceutical compositions containing said products and methods of using the drug.