Durch eine intramolekulare Heck‐Reaktion von 3 wird ein quartäres Spiro‐C‐Atom generiert – der Schlüsselschritt einer effizienten Synthese von Galanthamin 1. In den letzten Stufen der Synthese wird 1 aus dem tricyclischen Dienon 2 erhalten, das durch eine nichtklassische Dehydrierungsmethode aus dem entsprechenden α,β‐ungesättigten Keton hergestellt wurde.
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