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.
22-acetoxy-15-deoxo-eucosterol and 22-acetoxy-15-deoxo-eucosterol pentaglycoside, Hyacinthaceae, Veltheimia viridifolia
Publication DOI: 10.1016/S0031-9422(97)00584-0Journal NLM ID: 0151434Publisher: Elsevier
Institutions: Lehrstuhl für Pharmazeutische Chemie der Universität Freiburg, Freiburg, Germany, Herbarium BTU, Institut für Biologie, Berlin, Germany
Methods: 13C NMR, 1H NMR, FAB-MS, extraction, optical rotation measurement, TOCSY, melting point determination, HMBC, DEPT, HSQC, HETCOR, INEPT, HR-ESI, ROSEY
Found