Compound 35h showed a strong growth inhibition in KIT-dependent GIST cancer cells, such as GIST-T1 and GIST-882 (GI50 = 0.013 and 0.006 μM) and maintained a selectivity window against the GIST-48B cancer cell line (GI50 = 1.37 μM). Here, KIT is linked to gastrointestinal stromal tumor.