Abstract
A phytochemical study on the alkaloids from Teclea nobilis yielded five furoquinolines, including the new acetylmontrifoline. The structures were elucidated from extensive 2D-NMR and MS experiments. The absolute configuration of the chiral center of montrifoline and of acetylmontrifoline was established as R by analysing the Mosher's derivatives and chemical modifications, respectively. All the five furoquinolines showed weak in vitro antiplasmodial activity against Plasmodium falciparum, montrifoline being moderately active (56μg/ml) and not cytotoxic.
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