| abstract |
FIELD: chemistry. n SUBSTANCE: invention relates to organic chemistry, specifically a heterocyclic compound of formula (I) or a pharmaceutically acceptable salt thereof. Invention also relates to a pharmaceutical composition based on a compound of formula (I) or a pharmaceutically acceptable salt thereof, use thereof and a method of treating cancer. . n EFFECT: technical result: obtaining a novel compound of formula (I) and pharmaceutically acceptable salts thereof, having inhibitory activity with respect to activating mutated forms of EGFR and useful in the treatment of cancer. n 16 cl, 10 tbl, 12 dwg, 7 ex |