Anti-inflammatory furanogermacrane sesquiterpenes from Neolitsea parvigemma.

Six furanogermacrane sesquiterpenes, pseudoneolinderane (1), linderalactone (2), zeylanidine (3), zeylanicine (4), deacetylzeylanidine (5), and neolitrane (6), isolated from the stems of Neolitsea parvigemma, were tested for anti-inflammatory activities. Among them, 1 and 2 showed significant inhibitory effects on superoxide anion generation by human neutrophils in response to fMLP/CB. The IC50 of 1 and 2 were found to be 3.21 and 8.48 microg/mL, respectively.