The IC50 values varied from 17.42 μg/mL (against CCRF-CEM leukemia cells) to 38.70 μg/mL (against HCT116 p53−/− colon adenocarcinoma cells) for BAL, from 19.11 μM (against CCRF-CEM cells) to 47.50 μM (against MDA-MB-231-BCRP adenocarcinoma cells) for compound 1, and from 4.07 μM (against MDA-MB-231-pcDNA cells) to 11.44 μM (against HCT116 p53+/+ cells) for compound 2. Here, ABCG2 is linked to leukemia.