title: Iterative approach to polycyclic ethers based on stereoselective oxonium ylide [2,3]-shifts.
authors.affiliation: Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112-0850, USA.
authors.forename: F P
authors.initials: FP
authors.lastname: Marmsäter
authors.forename: F G
authors.initials: FG
authors.lastname: West