Abstract: 2,6-bis(((1H-benzo[d]imidazol-2-yl)thio)methyl)pyridine and N2, N6-dibenzylpyridine-2, 6-dicarboxamide derivatives and related compounds as phosphoinositide 3-kinase (PI3K) inhibitors for treating cancer. The present invention relates to pharmaceutically active 2,6-bis((1H-benzo[d]imidazol-2-yl)thio)methyl)pyridine, N2,N6-dibenzylpyridine-2, 6-dicarboxamide and N2,N6-bis(3-hydroxyphenyl) pyridine-2, 6-dicarboxamide, as well as to derivatives thereof, and to structurally related compounds. These compounds are phosphoinositide 3-kinase inhibitors (PI3K) and useful in treating or preventing cancerous diseases. The invention further relates methods of manufacturing such compounds as well as to pharmaceutical compositions and formulations comprising such compounds, optionally together with other pharmaceutically active compounds.