The invention relates to peptidic compounds, which peptidic compounds are compounds of formula (I)’, or a pharmaceutically acceptable salt, or solvate, or N-oxide, or stereoisomer thereof:wherein R1; R2; s; t; u; Aa78and G1are as defined herein.The peptidic compounds are useful in activating the Nrf2 pathway.本發明關於肽化合物,所述肽化合物是式(I)’的化合物,其醫藥上可接受的鹽、或溶劑化物、或N-氧化物、或立體異構體:其中R1、R2、s、t、u、Aa78和G1如本文所定義。所述肽化合物可用於啟動Nrf2路徑。