The present invention encompasses compounds of general formula (I)wherein the groups R1 to R6, A, B, C, n, p, q and r are defined as in claim 1, which are suitable for the treatment of diseases characterised by excessive or abnormal cell proliferation, pharmaceutical preparations which contain compounds of this kind and their use as medicaments.本發明涵蓋通式(I)化合物,其中基團R1至R6、A、B、C、n、p、q及r係如申請專利範圍第1項所定義,其適用於治療以過度或異常細胞增殖為特徵之疾病,含有此種化合物之醫藥製劑,及其作為醫藥之用途。