Investigation of the aerial parts of Centaurea granata afforded, in additio
n to two known polymethoxylated flavones, a new eudesmanolide. The structur
e of the new compound was elucidated by spectroscopic methods as 8 alpha-hy
droxy-11 beta,l3-dihydro onopordaldehyde. (C) 1998 Elsevier Science Ltd. Al
l rights reserved.