Compounds of the formula (I), in which X1, X2, X3, X4, X5, R1, R2, R3, R3′, R4, R6 and R7 have the meanings indicated in Claim 1, are inhibitors of tyrosine kinases, in particular Met kinase, and can be employed, inter alia, for the treatment of tumours.
式(I)的化合物,其中X1、X2、X3、X4、X5、R1、R2、R3、R3'、R4、R6和R7具有权利要求1所述的含义,是
酪氨酸激酶
抑制剂,特别是Met激酶
抑制剂,可以用于治疗肿瘤等疾病。