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Potent inhibitory activity of hydroxylated 2-benzylidene-3,4-dihydronaphthalen-1(2H)-ones on LPS-stimulated reactive oxygen species production in RAW 264.7 macrophages. | LitMetric

AI Article Synopsis

Article Abstract

This study attempted to discover tetralone-derived potent ROS inhibitors by synthesizing sixty-six hydroxylated and halogenated 2-benzylidene-3,4-dihydronaphthalen-1(2H)-ones via Claisen-Schmidt condensation reaction. The majority of the synthesized and investigated compounds significantly inhibited ROS in LPS-stimulated RAW 264.7 macrophages. When compared to malvidin (IC = 9.00 µM), compound 28 (IC = 0.18 µM) possessing 6‑hydroxyl and 2‑trifluoromethylphenyl moiety showed the most potent ROS inhibition. In addition, the compounds 20, 31, 39, 45, 47-48, 52, 55-56, 58-60, and 62 also displayed ten folds greater ROS inhibitory activity relative to the reference compound. Based on the structure-activity relationship study, incorporating hydroxyl groups at the 6- and 7-positions of tetralone scaffold along with different halogen functionalities in phenyl ring B is crucial for potent ROS suppression. This study contributes to a better understanding of the effect of halogen and phenolic groups in ROS suppression, and further investigations on 2-benzylidene-3,4-dihydronaphthalen-1(2H)-ones will potentially lead to the discovery of effective anti-inflammatory agents.

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http://dx.doi.org/10.1016/j.bmcl.2022.128921DOI Listing

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