tailieunhanh - Chemical constituents from methanolic extract of garcinia mackeaniana leaves and their antioxidant activity

The phytochemical investigation of the methanolic extract of Garcinia mackeaniana Craib. leaves led to the isolation and determination of five known compounds, including one benzophenone 4,3',4'-trihydroxy-2,6-dimethoxybenzophenone (1), two flavone C-glucosides, vitexin and 2''-O-acetylvitexin, one biflavone, amentoflavone, and one phenolic compound, methyl protocatechuate. The chemical structures of compounds 1-5 were characterized by the NMR-spectral methods. All isolated compounds were separated from G. mackeaniana for the first time. Benzophenone derivative 1 has shown the IC50 value of ± µg/mL in the DPPH-antioxidantexamination. | Chemical constituents from methanolic extract of garcinia mackeaniana leaves and their antioxidant activity

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