title: Phytochemicals from Echinacea and Hypericum: A Direct Synthesis of Isoligularone.
abstract: Reaction of trienes with α,β-unsaturated aldehydes produces bicyclic products via a tandem Diels-Alder/ene reaction. The adduct from tiglic aldehyde was converted into isoligularone by conversion to a furan followed by benzylic oxidation.
authors.affiliation: Department of Chemistry, Iowa State University, Ames, IA 50011.
authors.forename: George A
authors.initials: GA
authors.lastname: Kraus
authors.forename: Jaehoon
authors.initials: J
authors.lastname: Bae
authors.forename: Junwon
authors.initials: J
authors.lastname: Kim