Compounds of the formula (I), in which R1, R2 and R3 have the meanings indicated in Claim 1, are kinase inhibitors and can be employed, inter alia, for the treatment of tumors.
Compounds of the formula (I), in which R
1
, R
2
and R
3
have the meanings indicated in Claim
1
, are kinase inhibitors and can be employed, inter alia, for the treatment of tumours.