Four known compounds have been isolated from the aerial parts of the Brazilian medicinal plant Pariparoba (Pothomorphe umbellata). They were an alkaloid, a flavone, a dihydrocalcone, and a steroid. The chemical structures were established to be N-benzoylmescaline, wogonin, uvangoletin, and beta-sitosterol glucoside using spectral methods. Among these compounds, the main component N-benzoylmescaline showed significant antibacterial activity against Helicobacter pylori.
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Isobe et al. (2002) studied this question.
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