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  • Title: Anti-neuroinflammatory constituents from Polygala tricornis Gagnep.
    Author: Li J, Zeng KW, Shi SP, Jiang Y, Tu PF.
    Journal: Fitoterapia; 2012 Jul; 83(5):896-900. PubMed ID: 22498345.
    Abstract:
    Two new compounds (S)-(+)-butyl-4-methylene-5-oxo-pyrrolidin-2-carboxylate (1) and (5-formylfuran-2-yl)methyl 4-hydroxy-2-methylenebutanoate (2), together with four known compounds (3-6) were isolated from the roots of Polygala tricornis Gagnep. Their structures were determined on the basis of 1D- and 2D-NMR experiments and by comparison with physical data of known compounds. All the isolated compounds were examined for their inhibitory effect on the nitric oxide (NO) production induced by lipopolysaccharide (LPS) in BV-2 microglial cells, and compounds 1 and 2 exhibited pronounced inhibition on the NO production with IC(50) values of 14.1 μM and 1.77 μM, respectively.
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