| Abstract
| - As part of a search for novel inhibitors of endothelin convertingenzyme (ECE), the MeOH−CH2Cl2 extract of the roots of Daleafiliciformis was shown to be active.Bioassay-guidedfractionation of the extract yielded a novel phytoalexin, daleformis(1), whose structure wasdetermined by interpretation of spectral data and X-ray analysis.Daleformis (1) inhibitedECE with an IC50 of 9 μM.
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