New Pseudoguaiane Derivatives from Inula aschersoniana Janka var. aschersoniana

摘要

The aerial parts of Inula aschersoniana Janka var. aschersoniana afforded parthenolide, diepoxycostunolide, inusoniolide, chrysosplenol C and four new pseudoguaiane-type sesquiterpenoids. Their structures were determined using spectral methods and relative stereochemistry by NOESY correlations.