Compounds of formula I
in free or salt form, wherein R
1
, R
2
, R
3
, R
4
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.
式I中R1、R2、R3、R4和X的自由或盐形式化合物,其含义如规范所示,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以及制备这些化合物的方法。