title: Further beta-Cyperone Derivatives from Haplopappus freemontii.
abstract: The roots of HAPLOPAPPUS FREEMONTII afforded in addition to the known 8-oxo-beta-cyperone two further derivatives. The structures were elucidated by highfield (1)H-NMR spectroscopy.
authors.affiliation: Institute for Organic Chemistry, Technical University of Berlin, Straße des 17. Juni 135, D-1000 Berlin 12.
authors.forename: J
authors.initials: J
authors.lastname: Jakupovic
authors.forename: R
authors.initials: R
authors.lastname: Boeker
authors.forename: R M
authors.initials: RM
authors.lastname: King