Asymmetric Total Synthesis of Euphordraculoate A and Pedrolide

Here we report the asymmetric total syntheses of two rearranged tigliane diterpenoids, euphordraculoate A and pedrolide. A reductive dihydroxylation cascade and Nazarov cyclization were performed to generate euphordraculoate A, which was subjected to a cascade of Eu‐promoted dienyl enolization, intramolecular Diels–Alder reaction and enol‐ketone tautomerization to afford pedrolide, a pathway consistent with our proposal for the biogenesis of pedrolide.