| abstract |
A novel compound that can inhibit phosphatidylinositol 3-kinase (PI3K) and / or the target of rapamycin in mammals (mTOR) and has an antitumor activity is described. A compound that can inhibit PI3K and / or mTOR is specifically described, has antitumor activity and is represented by formula (1) (See formula (1)) which has several substituents: in formula (1), R1, R2, R3 , R4, Ra, Rb, Rc and X are as defined in the description. |