One new bromine substituted iridoid glycoside, ferlapioside (1), was isolated from the roots of Ferula lapidosa Korovin, together with 10 known ones including seven iridoid glycosides (2-8) and three sesquiterpene lactones (9-11). Their structures were elucidated by extensive spectroscopic analyses, e.g. 1D and 2D-NMR, HR-ESI-MS, IR, UV, CD techniques, and comparison with literature values. Compounds 1 and 3-11 were evaluated for inhibitory activity against LPS-induced NO production in the RAW 264.7 cells and the in vitro cytotoxic activity against five human cancer cell lines (HL-60, A549, SMMC-7721, MDA-MB-231 and SW480). However, none of them exhibit significant anti-inflammatory and cytotoxic activity. This study will provide a scientific basis and reference for the further development and utilisation of Ferula plants.
Keywords: Ferula lapidosa Korovin; anti-inflammatory; cytotoxicity; ferlapioside; iridoid glycosides; sesquiterpene lactones.