Lignans from the root of Valeriana jatamansi and their biological evaluation.

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      CHINA
    • Abstract:
      Investigation on the chemical components of Valeriana jatamansi Jones (Caprifoliaceae), a new lignan with pyran-ring, dipsalignan G (1), along with eight known compounds (2–9) were isolated. Their structures were elucidated by extensive analysis of 1D, 2D NMR and HR-ESI-MS spectroscopic data. Additionally, possible biosynthetic pathway of 1 was proposed. Finally, biological evaluation results showed that 8 had significant scavenging ability to ABTS and DPPH free radicals, with IC50 values of 1.35 ± 0.01 and 2.94 ± 0.01 μg/ml, respectively. [ABSTRACT FROM AUTHOR]
    • Abstract:
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