Total Synthesis of Vinigrol

Abstract

Carbocyclic cage fight: The substrate-controlled total synthesis of vinigrol features a strategic oxidative dearomatization/Diels–Alder cycloaddition reaction and a subsequent palladium-catalyzed cyclization cascade to construct the carbocyclic core. The C4, C9, and C12 stereocenters were installed using either reduction or oxidation reactions, and the diterpenoid core was unraveled by a ring fragmentation reaction.