Further novel 2-acylcyclohexane-1,3-diones from lepidopteran larvae

Abstract

Eight further natural 2-acylcyclohexane-1,3-diones, hydroxylated and unhydroxylated at C-4, were identified in cultures of Ephestia kuehniella Zeller. These compounds had C₁₆ or C₁₈ acyl side-chains with unsaturation at C-7′, -9′, -11′(Z) or C-14′(E) or diunsaturation at C-9′ and C-11′(Z,Z) or C-7′ and C-9′(Z,Z) or (Z,E).