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In this study, a series of novel β‑hydroxy ketone derivatives 3a-o were designed, synthesized, and evaluated for their anticancer activity. The structure of these compounds were characterized by IR, ¹H and ¹³C NMR, mass spectrometry and elemental analysis methods. All the synthesized compounds were screened for anticancer activity against MCF-7 and U87 cells. Among them, compound 3l was appeared to be the most potent compound on both cancer cells; and IC₅₀ dose was determined as 145 µM for MCF-7 cells and 6,6 µM for U87 cells. DNA ladder and Annexin V apoptotic marker tests were used and as a result, 3l caused the initiation of apoptosis on U87 cells. VDAC protein expression increased dramatically after U87 glioblastoma brain cancer cells were treated with compound 3l Additionally, the molecular modeling of these compounds was studied in FLT3 receptor, Estrogen receptor, and PARP2 …