摘要 |
in free or salt form, wherein R<SUP>a</SUP>, R<SUP>b</SUP>, R<SUP>2</SUP>, R<SUP>3</SUP>, R<SUP>4 </SUP>and R<SUP>5 </SUP>have the meanings as indicated in the specification, are useful for treating conditions that are mediated by mediated by phosphatidylinositol 3-kinase. Pharmaceutical compositions that contain the compounds and a process for preparing the compounds are also described.
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