The present invention covers 3-oxo-2,6-diphenyl-2,3-dihydropyridazine -4-carboxamide compounds of general formula (I): in which R1, R2, R3, R4, R5and R6are as defined herein, methods of preparing said compounds, intermediate compounds useful for preparing said compounds, pharmaceutical compositions and combinations comprising said compounds and the use of said compounds for manufacturing pharmaceutical compositions for the treatment or prophylaxis of diseases, in particular of cancer or conditions with dysregulated immune responses or other disorders associated with aberrant AHR signaling, as a sole agent or in combination with other active ingredients.本發明涵蓋通式(I)之3-側氧基-2,6-二苯基-2,3-二氫嗒-4-甲醯胺化合物: 其中R1、R2、R3、R4、R5及R6係如本文所定義,製備該等化合物之方法、可用於製備該等化合物之中間體化合物、包含該等化合物之醫藥組合物及組合以及該等化合物作為唯一藥劑或與其他活性成分組合以供製造用於治療或預防疾病、具體而言癌症或具有失調免疫反應之病況或與異常AHR信號傳導相關之其他病症的醫藥組合物之用途。