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Aim To gain the active compounds fromDictamnus dasycarpus.Method The solvent partition,preparative TLC,spectral analysis and bioassay are used to gain the active compounds.Results Fraxinellone is a main biological actives substance fromD.dasycarpus was gained.Conclusion Its antifeeding rate and death rate of 72hat 0.21%(mass percent) against Mythimna setarata were 90.4%and 95.2%,respectively.
Aim To gain the active compounds from Dictamnus dasycarpus. Method The solvent partition, preparative TLC, spectral analysis and bioassay are used to gain the active compounds. Results Fraxinellone is a main biological active substance from D.dasycarpus was gained. Confclusion Its antifeeding rate and death rate of 72hat 0.21% (mass percent) against Mythimna setarata were 90.4% and 95.2%, respectively.