(+)-(5S)-δ-Lactone of 5-hydroxy-7-phenylhepta-2,6-dienoic acid, a natural product from <i>Cryptocarya caloneura</i> (Scheff.) Kostermans

Abstract

The structure, including absolute configuration, of a new compound extracted from Cryptocarya caloneura (Scheff.) Kostermans has been determined by degradation as the (+)-(5S)-d-lactone of 5-hydroxy-7- phenylhepta-2,6-dienoic acid. The structure has been confirmed by synthesis of its racemate.