title: Application of an intramolecular dipolar cycloaddition to an asymmetric synthesis of the fully oxygenated tricyclic core of the stemofoline alkaloids.
abstract: An intramolecular non-stabilized azomethine ylide dipolar cycloaddition was applied toward the first non-racemic synthesis of the fully-oxygenated bridged pyrrolizidine core (45) of (+)-stemofoline (1) in eleven steps from a commercially available starting material.
authors.affiliation: Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.
authors.forename: Ryan J
authors.initials: RJ
authors.lastname: Carra
authors.forename: Matthew T
authors.initials: MT
authors.lastname: Epperson
authors.forename: David Y
authors.initials: DY
authors.lastname: Gin