Compounds of formula (I) in free or salt form, wherein R1, R2, R3, R4 and X have the meanings as indicated in the specification, are useful for treating diseases mediated by phosphatidylinositol 3-kinase. Pharmaceutical compositions that contain the compounds and processes for preparing the compounds are also described.
其中 R1、R2、R3、R4 和 X 的含义如说明书所示,游离或盐形式的式 (I) 化合物可用于治疗由
磷脂酰肌醇 3- 激酶介导的疾病。还描述了含有这些化合物的药物组合物和制备这些化合物的工艺。