Compounds having the formula I wherein R1, R2, R3, R4, R5, Ra, Rb, Rc, Rd, Re, n, r, s and t are as defined herein and which compounds are inhibitors of PAK1. Also disclosed are compositions and methods for treating cancer and hyperproliferative disorders.本發明揭示具有式I之化合物,其中R1、R2、R3、R4、R5、Ra、Rb、Rc、Rd、Re、n、r、s及t係如本文所定義,且該等化合物係PAK1之抑制劑。本發明亦揭示用於治療癌症及過度增殖病症之組合物及方法。