Planta Medica 1981-Aug
[The major quaternary alkaloids of Strychnos variabilis from Zaire].
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Two quaternary alkaloids have been isolated from the root barks of Strychnos variabilis collected in Zaïre. The structure of these alkaloids (mavacurine and fluorocurine) could be deduced from spectral data: UV, MS, IR and (1)H NMR. Moreover, the stereochemistry could be assigned by (1)H NMR at 360 MHz.