The present invention relates to Bub1 kinase (= Budding uninhibited by benzimidazole kinase) inhibiting 1-(pyrimidin-2-yl)-1H-indazole compounds of formula (I), i.e. which therefore have potential to treat hyperprofilerative diseases such as cancer.La présente invention concerne des composés 1-(pyrimidin-2-yl)-1H-indazole de formule (I) inhibant la Bub1 kinase (= Bourgeonnement empêché par la benzimidazole kinase), ces composés ayant donc le potentiel pour traiter les maladies hyperprolifératives telles que le cancer.