The present invention relates to compounds of general formulaI,, wherein the groups R1, R2and R3are defined as in claim 1, which have valuable pharmacological properties, particularly are modulators of STING.本發明係關於通式I之化合物,, 其中基團R1、R2及R3如請求項1所定義,該等化合物具有有價值的藥理學特性,尤其為STING之調節劑。