Eight new eudesmane- and eremophilane-type sesquiterpenoids from Atractylodes lancea

Phytochemical and pharmacological study on the rhizomes of Atractylodes lancea led to the identification of twenty-one compounds: six new eudesmane-type sesquiterpenoids (1–6), two new eremophilane-type sesquiterpenoids (7, 8), and thirteen known compounds (9–21). These new compounds were elucidated using extensive spectroscopic analyses with experimental and calculated electronic circular dichroism (ECD) for the configurational assignments....