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Preparation of Dearomatized p-Coumaric Acid Derivatives as DNA Damage Response Inhibitors with Potent In Vitro Antitumor Effect.

Laura FásiTímea GondaNoémi TóthMáté VassAndrás GyovaiViktória NagyImre OcsovszkiIstván ZupkóNorbert KúszMárta NovéGabriella SpenglerRóbert BerkeczHui-Chun WangFang-Rong ChangAttila Hunyadi
Published in: ChemMedChem (2024)
Our research group previously identified graviquinone (1) as a promising antitumor metabolite that is formed in situ when the antioxidant methyl caffeate scavenges free radicals. Furthermore, it exerted a DNA damaging effect on cancer cells and a DNA protective effect on normal keratinocytes. To expand and explore chemical space around qraviquinone, in the current work we synthesized 9 new alkyl-substituted derivatives and tested their in vitro antitumor potential. All new compounds bypassed ABCB1-mediated multidrug resistance and showed highly different cell line specificity compared with 1. All compounds were more potent in MDA-MB-231 than on MCF-7 cells. The n-butyl-substituted derivatives 2 and 8 modulated the cell cycle and inhibited the ATR-mediated phosphorylation of checkpoint kinase-1 in MCF-7 cells. As a significant expansion of our previous findings, our results highlight the potential antitumor value of alkyl-substituted graviquinone derivatives.
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