Bicyclic heterocyclic derivatives of formula (I) useful in inhibiting PDGF receptor mediated biological activity. Wherein A is and R1, R1a, R2, R3, R4, R5, R6 and X are as defined herein.
具有式(I)的二环杂环衍
生物,可用于抑制血小板衍生生长因子受体介导的
生物活性。其中A、R1、R1a、R2、R3、R4、R5、R6和X如本文所定义。