Abstract

Eight ring C-seco and ring-intact limonoids, and 25 known limonoids were isolated from the fruits of Melia toosendan (Meliaceae). Their structures were elucidated on the basis of extensive spectroscopic evidence including HRMS, 1D and 2D NMR spectroscopic data. A total of 29 isolated limonoids was evaluated for NF-κB activities. Among them, eight compounds significantly enhanced the TNFα-induced NF-κB luciferase activity at 10μM, while 10 compounds suppressed the NF-κB activation.

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