Abstract: | Three new secoprezizaane sesquiterpene lactones, (1R,2S)‐1,2‐epoxyneomajucin ( 1 ), (2R)‐2‐hydroxyneomajucin ( 2 ), and (2R)‐2‐hydroxymajucin ( 3 ), along with six known compounds ( 4 – 9 ), were isolated from the poisonous shrub Illicium micranthum. Their structures were established by in‐depth analyses of spectroscopic and mass‐spectrometric data. |