Abstract
AbstractThe biologically active and structurally complex secondary metabolite epicolactone is a member of the natural product pool found in cash crop endophytes of the genus Epicoccum. By exploiting inherent reactivity, a total synthesis of this highly oxygenated and polycyclic molecule met chemo‐ and regioselectivity challenges. The key buildup of complexity was accomplished via an intramolecular [2+2] photocycloaddition between a quinone and an electron‐deficient diene followed by a cyclobutane ring expansion. The use of a dioxene as an acyl anion equivalent and an intramolecular carbonyl methenylation furnished the natural product.
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