title: Preparation of the 5/5-spiroketal of the ritterazines.
abstract: The enantiomerically pure 5/5-spiroketal required for the synthesis of the ritterazines has been prepared with high diastereocontrol by ring closure followed by equilibration.
authors.affiliation: Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA. taberdf@udel.edu
authors.forename: Douglass F
authors.initials: DF
authors.lastname: Taber
authors.forename: Jean-Michel
authors.initials: JM
authors.lastname: Joerger
mesh_terms: D002625:Chemistry, Organic / Q000379:methods*; D018360:Crystallography, X-Ray; D005663:Furans / Q000138:chemical synthesis*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D013141:Spiro Compounds / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D005663:Furans; D013141:Spiro Compounds; C520774:spiroketal