Compounds of the formula (I) in which R
1
, R
2
, R
3
, R
4
and R
5
have the meanings indicated in claim
1
are inhibitors of tyrosine kinases, in particular of met kinase and can be employed inter alia for the treatment of tumours.
式(I)中的化合物,其中R1、R2、R3、R4和R5具有权利要求1中指示的含义,是
酪氨酸激酶的
抑制剂,特别是met激酶的
抑制剂,可用于治疗肿瘤等疾病。