Abstract
Eight undescribed triterpenoids (1-8), including one apotirucallane-type triterpenoid (1), six tirucallane-type triterpenoids (2-7), and one oleanane-type triterpenoid (8), along with ten known compounds (9-18) were isolated from the resins of Pistacia lentiscus. Their structures were elucidated by integrating NMR spectroscopic analyses and ESI-HR-MS. Compounds 5, 11-17 exhibited moderate inhibitory abilities against NO production in LPS-induced RAW264.7 cells, with IC50 values in the range of 18.26-50.37 μM, compared to that of the positive control dexamethasone (IC50 =20.24 μM).
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