Diverse prieurianin-type limonoids with oxygen-bridged caged skeletons from two <i>Aphanamixis</i> species: discovery and biomimetic conversion

Abstract

The formation of HO-1 based oxygen-bridges and new C–C bonds <italic>via</italic> a Dieckmann reaction provided diverse ring systems, aphanamolide-type skeletons, and a solution for the structural elucidation of prieurianin limonoids with missing NMR signals.