Aminoalkylpyrimidine derivatives of formula I, wherein the meaning of the different substituents are those indicated in the description. These compounds are useful as histamine H4receptor antagonists.本發明揭露式I之胺基烷基嘧啶衍生物類,其中不同取代基之意義係如發明說明內所描述者。該等化合物係作為組織胺H4受體拮抗劑。