Three new diterpenoids (1-3) and three new triterpenoids (4-6) were isolated from the trunk of Abies holophylla together with 19 known terpenoids. The chemical structures of 1-6 were determined through NMR and MS data analyses. Also, the structural assignments of some of these compounds were verified and elucidated utilizing computational methods coupled with a statistical procedure (CP3, DP4, and DP4+). All the isolated compounds were evaluated for their cytotoxicity against four human cancer cell lines (A549, SK-OV-3, SK-MEL-2, and HCT-15). In addition, the compounds were tested for their anti-inflammatory effects in lipopolysaccharide-stimulated murine microglia BV2 cells by measuring nitric oxide levels, and for their neuroprotective activity in C6 cells through induction of nerve growth factor.
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