A highly oxygenated germacrane from aspilia eenii and constituents from other aspilia spp
Ganzer, U.; Jakupovic, J.; Bohlmann, F.; King, R.M.
Phytochemistry 31(1): 209-212
ISSN/ISBN: 0031-9422 Accession: 006944205
Investigation of 11 Aspilia species afforded several known kaurane derivatives and other diterpenes. From A. eenii a highly oxygenated germacrane bisepoxide was isolated. Comparison of the 1H NMR data with those of several germacrane derivatives from Senecio and Ligularia species, spin decoupling and NOED led to corrections of the structures of several compounds.