The present invention encompasses compounds of general formula (1) wherein the groups R
1
to R
4
, X
1
, X
1
, X
3
, L
1
and L
2
are defined as in claim
1
, which are suitable for the treatment of diseases characterised by excessive or anomalous cell pro-liferation, and the use thereof in such a treatment.
本发明涵盖了一般式(1)中的化合物,其中基团R1至R4、X1、X1、X3、L1和
L2如权利要求1中定义的那样,适用于治疗以细胞过度或异常增殖为特征的疾病,并且在此类治疗中的使用。