Two new indole alkaloid glycosides, 10-hydroxystrictosamide and 6'-O-acetylstrictosamide, as well as the known alkaloids strictosamide and vincosamide were isolated from the leaves of Nauclea orientalis L. The structures of the isolated compounds were determined using spectroscopic methods, mainly 1D- and 2D-NMR spectroscopy.
Posters Planta Medica 55(1989) nances are therefore inverse to those usually reported for quercetin-derivatives that have the same oxygenation pattern in ring B.
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