Two new sesquiterpene lactones from the pericarp of Illicium macranthum

Silica gel column chromatography was used for the isolation and purification of the chemical  constituents of the pericarp of Illicium macranthum.  From dichloromethane-EtOAc (1∶1) fraction and EtOAc fraction of the methanol extracts, eleven compounds were identified on the basis of chemical and spectral data.  Two new compounds were elucidated to be 6-deoxyneomajucin (1) and 2-oxo-6-deoxyneomajucin (2), along with nine known compounds 6-deoxypseudoanisatin (3), pseudoanisatin (4), anisatin (5), pseudomajucin (6), protocatecheuic acid (7), shikimic acid (8), shikimic acid methylester (9), β-sitosterol (10) and daucosterol (11).  Compounds 1 and 2 are new majucin-type sesquiterpene lactones.