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A new acylated iridoid, valejatadoid H ( 1 ), along with fourteen known compounds, were obtained from the  n -BuOH extract of the roots and rhizomes of  Valeriana jatamansi , and their structures were elucidated by various spectroscopic methods. Among them, compounds  8 ,  11  and  13  exhibited potent inhibition on NO production, with IC 50  values of 4.21, 6.08 and 20.36 μM, respectively. In addition, compounds  14  and  15  showed anti-influenza virus activities, among which compound  14  exhibited significant effect with an IC 50  value of 0.99 μM.

A new acylated iridoid and other chemical constituents from Valeriana jatamansi and their biological activities