compound or a salt thereof, compound methanesulfonate, compound sulfate, farm composition, aceutic composition, phosphatidyl isitol 3-kinase inhibitors, and mammalian target of rapamycin, and use of a compound
There is provided a novel compound that inhibits phosphatidylinositol 3-kinase (PI3K) and/or the mammalian target of rapamycin (mTOR) and exhibits anti-tumor activity. The present invention provides a compound represented by the following formula (1) having various substituents that inhibits PI3K and/or mTOR and exhibits anti-tumor activity: wherein R 1 , R 2 , R 3 , R 4 , R a , R b , R c , and X each have the same meanings as defined in the specification.