Compounds of the formula (I), in which R, X, R
1
, R
2
, R
3
and R
4
have the meanings indicated in Claim (
1
), are inhibitors of tyrosine kinases, in particular TIE-2, and Raf kinases and can be employed, inter alia, for the treatment of tumours.
化合物的结构式(I)中,其中R、X、R1、R2、R3和R4的含义如权利要求项(1)所示,能够抑制
酪氨酸激酶,特别是TI
E-2和Raf激酶,并可用于治疗肿瘤。