Pyrazolo-quinazoline derivatives of formula (I) as defined in the specification, and pharmaceutically acceptable salts thereof, process for their preparation and pharmaceutical compositions comprising them are disclosed; the compounds of the invention may be useful, in the treatment of diseases associated with a disregulated protein kinase activity, like cancer.本發明係揭示如說明書中所定義之式(I)吡唑并-喹唑啉衍生物,及其醫藥上可接受之鹽、其製法及包含其之醫藥組成物;本發明化合物可用於療法,用於治療與蛋白質激酶活性失調相關之疾病,例如癌症。