Total Synthesis of (−)-Bacchopetiolone via an Asymmetric Hydroxylative Phenol Dearomatization/[4+2]-Dimerization Cascade Promoted by a Novel Salen-Type Chiral Iodane

The first total and biomimetic synthesis of the natural bis­(sesquiterpene) (−)-bacchopetiolone (revised structure) was completed through a highly diastereoselective hydroxylative phenol dearomatization/[4+2]-dimerization cascade conversion of (+)-curcuphenol using a novel C2-symmetrical chiral Salen-type bis­(λ5-iodane).