The invention relates to compounds of formula (I) and salts thereof: wherein the substituents are as defined in the specification a compound of formula (I) for use in the treatment of the human or animal body, in particular with regard to c-Met tyrosine kinase mediated diseases or conditions the use of a compound of formula (I) for manufacturing a medicament for the treatment of such diseases pharmaceutical compositions comprising a compound of the formula (I), optionally in the presence of a combination partner, and processes for the preparation of a compound of formula (I).本發明係關於式(I)化合物及其鹽,其中取代基如本說明書中所定義;式(I)化合物用於治療人類或動物體,尤其關於c-Met酪胺酸激酶介導之疾病或病症;式(I)化合物用於製造供治療該等疾病之藥劑的用途;視情況在組合搭配物存在下包含式(I)化合物之醫藥組合物,及式(I)化合物之製備方法。