The present invention covers Pyrazolopyrimidine compounds of general formula (I): in which n, o, X, Y, R, Q, R1, R2, R3 and R4are as defined herein, methods of preparing said compounds, intermediate compounds useful for preparing said compounds, pharmaceutical compositions and combinations comprising said compounds and the use of said compounds for manufacturing pharmaceutical compositions for the treatment, control and/or prevention of diseases, in particular of helminth infctions, as a sole agent or in combination with other active ingredients.本發明涵蓋通式(I)之吡唑並嘧啶化合物:其中n、o、X、Y、R、Q、R1、R2、R3及R4係如本文中所定義,製備該化合物之方法、可用於製備該等化合物之中間化合物、包含該等化合物之醫藥組成物和組合及該等化合物用於製造供治療、控制及/或預防疾病(特別是蠕蟲感染)之醫藥組成物(呈單一劑或與其他活性成分相組合)之用途。