Synthesis and absolute configuration of annuionone A

Article abstract of DOI:10.1016/j.tet.2005.07.017

Synthesis of both enantiomers of annuionone A (1), an allelopathic agent isolated from Helianthus annuus (sunflower), was accomplished. The absolute configuration of the naturally occurring 1 was determined to be 1S,5R,8R.