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Spirocyclic nortriterpenes from the bulbs of Veltheimia viridifolia
G Amschler1, A W Frahm, D Müller-Doblies
1Lehrstuhl für Pharmazeutische Chemie der Universität Freiburg, Germany.
Phytochemistry
|January 20, 1998
Abstract:
A new spirocyclic nortriterpene, 22-acetoxy-15-deoxo-eucosterol, was isolated together with a corresponding pentaglycoside from the bulbs of Veltheimia viridifolia. The structures of the isolated compounds were elucidated by spectroscopic methods including 1D- and 2D-1H NMR, 13C NMR, 1D-INEPT, 1D- and 2D-TOCSY, HSQC, HMBC, ROESY experiments, FAB- and HRESI-mass spectrometry.