The synthesis of macro- and medium-cyclic compounds. Part II. The synthesis and the absolute configuration of phoracantholide I and J: The defensive secretion of the eucarypt longicorn, Phoracantha synonyma.

Both enantiomers of phoracantholide I and J were synthesized from a chiral starting material obtainable via yeast reduction, and the absolute configurations of the natural materials were determined by GLC studies using a chiral stationary phase.