Further beta-Cyperone Derivatives from Haplopappus freemontii.
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.
Jakupovic
J
J
Institute for Organic Chemistry, Technical University of Berlin, Straße des 17. Juni 135, D-1000 Berlin 12.
Boeker
R
R
King
R M
RM