Bioactive Sesquiterpenoid and Polyacetylene Glycosides from Atractylodes lancea

Nine new sesquiterpenoids (1-9), five new polyacetylenes (10-14), and six known compounds were isolated from the rhizomes of Atractylodes lancea. These new chemical structures were established using NMR, MS, and ECD data. Notably, compounds 3-5, the aglycone of which possesses two stereogenic centers (C-5 and C-7), exhibited similar ECD spectra to compounds 1 and 2, the aglycone of which possesses one stereogenic center (C-7). Such a difference...