SYNTHESES TOTALES ET ETUDES DE LIGNANES BIOLOGIQUEMENT ACTIFS. APPLICATION DE L'α-HYDROXYALKYLATION DE β-BENZYL γ-BUTYROLACTONES A LA CREATION DES SQUELETTES PHENYL TETRALINE ET BISBENZOCYCLOOCTADIENE - 4. SYNTHESE TOTALE DE LA (+/-)-STEGANONE ET DE SES C

Article abstract of DOI:10.1016/S0040-4020(01)82447-9

The biphenyl 16 (obtained from α-bromopiperonal and the aromatic iodide 14 by a modified Ullmann reaction) was cyclized by intramolecular hydroxyalkylation to the isomeric alcohols 17a and 17b.These were oxidized using Jones' reagent, to afford the enol 1