The invention is directed to certain novel compounds. Specifically, the invention is directed to compounds of formula (I) and salts thereof. The compounds of the invention are inhibitors of PI3-kinase activity.Linvention concerne certains nouveaux composés. Plus particulièrement, linvention concerne des composés de formule (I) et des sels de ces composés. Les composés de linvention sont des inhibiteurs de lactivité de la kinase PI3.