Biomimetic synthesis and anti-inflammatory effects of horsfiequinone A
2021
Abstract Inspired by the oxy-tyrosinase type II copper enzyme, a biomimetic synthesis of the natural product horsfiequinone A (1) has been achieved using CuOTf/DBED/O2 catalyzed oxidation as a key step. The synthetic route furnished 1 in 33% overall yield (64% brsm) from commercially available para-hydroxybenzaldehyde. Moreover, revisiting the biological activity of 1 resulted in the discovery of its in vitro inhibitory activity towards nitric oxide (NO) production in LPS-induced RAW264.7 cells with an IC50 value of 4.42 ± 0.81 μM. The anti-inflammatory effect of 1 was further supported by an iNOS expression inhibition assay and molecular docking simulation. 2009 Elsevier Ltd. All rights reserved.
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