| abstract |
The present invention encompasses compounds of general formula (1), wherein the groups R 1 to R 4 , X 1 , X 2 , X 3 , X 4 , X 5 , Q, L 1 and L 2 are defined as in claim 1, which are suitable for the treatment of diseases characterised by excessive or abnormal cell proliferation, as well as pharmaceutical preparations and formulations of these compounds. |