The present invention relates to substituted 2-(morpholin-4-yl)-l,7-naphthyridine compounds of general formula (I) or (lb), to methods of preparing said compounds, to intermediate compounds useful for preparing said compounds, to pharmaceutical compositions and combinations comprising said compounds and to the use of said compounds for manufacturing a pharmaceutical composition for the treatment or prophylaxis of a disease, in particular of a hyperproliferative disease as a sole agent or in combination with other active ingredients.