title: An easy entry into berbane and alloyohimbane alkaloids via a 6-exo radical cyclization.
abstract: [reaction: see text] The pharmacologically important tetracyclic berbane and pentacyclic alloyohimbane structures were prepared efficiently in four steps including a stereoselective 6-exo radical cyclization using xanthates as the radical source.
authors.affiliation: Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette, France.
authors.forename: T
authors.initials: T
authors.lastname: Kaoudi
authors.forename: L D
authors.initials: LD
authors.lastname: Miranda
authors.forename: S Z
authors.initials: SZ
authors.lastname: Zard
mesh_terms: D001600:Berberine Alkaloids / Q000138:chemical synthesis*; D046948:Secologanin Tryptamine Alkaloids / Q000138:chemical synthesis*; D013237:Stereoisomerism
chemical_list: D001600:Berberine Alkaloids; D046948:Secologanin Tryptamine Alkaloids