title: [3 + 2]-annulation reactions of chiral allylsilanes and chiral aldehydes. studies on the synthesis of bis-tetrahydrofuran substructures of annonaceous acetogenins.
abstract: [Structure: See text] Double asymmetric [3 + 2]-annulation reactions of chiral beta-silyloxyallylsilanes with chiral 2-tetrahydrofuranyl carboxaldehydes have been studied, leading to the stereocontrolled synthesis of six diastereomeric bis-tetrahydrofuran structures corresponding to the core subunits of members of the Annonaceous acetogenin family of natural products. Transition-state models are proposed to account for the stereoselectivity of the double-stereodifferentiating [3 + 2]-annulation reactions.
authors.affiliation: Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, USA.
authors.forename: Eric
authors.initials: E
authors.lastname: Mertz
authors.forename: Jennifer M
authors.initials: JM
authors.lastname: Tinsley
authors.forename: William R
authors.initials: WR
authors.lastname: Roush
mesh_terms: D054378:Acetogenins; D000447:Aldehydes / Q000737:chemistry*; D000498:Allyl Compounds / Q000737:chemistry*; D002614:Chelating Agents; D005233:Fatty Alcohols / Q000737:chemistry*; D005663:Furans / Q000138:chemical synthesis* / Q000737:chemistry; D007202:Indicators and Reagents; D007783:Lactones / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D008968:Molecular Conformation; D012821:Silanes / Q000737:chemistry*
chemical_list: D054378:Acetogenins; D000447:Aldehydes; D000498:Allyl Compounds; D002614:Chelating Agents; D005233:Fatty Alcohols; D005663:Furans; D007202:Indicators and Reagents; D007783:Lactones; D012821:Silanes; C018674:tetrahydrofuran