Quantitative Analysis of Strychnine and Brucine inStrychnos nux-vomicausing1H-NMR
Michel Frédérich, Young Hae Choi, Robert Verpoorte
Abstract
Michel Frédérich, Young Hae Choi, Robert Verpoorte
Abstract
A quantitative analysis using (1)H-NMR (Q-NMR) has been developed for the determination of strychnine and brucine in Strychnos nux-vomica seeds and stems. The advantages of the method are that no reference alkaloids are needed for calibration curves, the quantification could be directly realized on a crude extract, strychnine and brucine could easily be distinguished, an overall profile of the preparation (including non alkaloid compounds) could be directly obtained, and a very significant time-gain could be achieved, in comparison to conventional HPLC methods, for instance.
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A quantitative analysis using (1)H-NMR (Q-NMR) has been developed for the determination of strychnine and brucine in Strychnos nux-vomica seeds and stems. The advantages of the method are that no reference alkaloids are needed for calibration curves, the quantification could be directly realized on a crude extract, strychnine and brucine could easily be distinguished, an overall profile of the preparation (including non alkaloid compounds) could be directly obtained, and a very significant time-gain could be achieved, in comparison to conventional HPLC methods, for instance.
Key concepts: Brucine, Strychnos, Strychnine, Alkaloid, Chemistry, Proton NMR, Quantitative analysis (chemistry), Stereochemistry