Two additional anthraquinone derivatives containing a (Z)-dienyl side-chain, dehydroanthrasesamones A (2) and B (3), were isolated from a hairy root culture of Sesamum indicum after preventing light throughout all experimental procedures. Their respective structures were determined to be 1-hydroxy-2-[(Z)-4-methylpenta-1,3-dien-1-yl]anthraquinone and 1,4-dihydroxy-2-[(Z)-4-methylpenta-1,3-dien-1-yl]anthraquinone by spectroscopic methods.
