Disclosed are compounds of formula (I), their tautomeric forms, stereoisomers, and pharmaceutically acceptable salts thereof, wherein R1 - R4, and n are as defined in the specification, pharmaceutical compositions including a compound, tautomer, stereoisomer, or salt thereof, and methods of treating or preventing diseases or disorders, for example, cancer, that are amenable to treatment or prevention by inhibiting the PI3K enzyme of a subject.
本发明揭示了公式(I)的化合物及其互变异构体、立体异构体和药学上可接受的盐,其中R1-R4和n如规范所定义,包括一种化合物、互变异构体、立体异构体或其盐的制药组合物,以及治疗或预防疾病或障碍(例如癌症),该疾病或障碍可通过抑制受体内的
PI3K酶来进行治疗或预防的方法。