RESUMEN
A new furofuran lignan, zanthonin (1) together with 13 known compounds including seven furofuran lignans (2-8), one isobutyl amide (9), a furanocoumarin (10) and four flavonoids (11-14) have been isolated from the leaves of Zanthoxylum armatum. The chemical structures of these compounds were elucidated mainly on the basis of NMR (ID and 2D) and MS data. This is the first report on the isolation of methylxanthoxylol (4) from Z. armatum.
Asunto(s)
Lignanos/química , Hojas de la Planta/química , Zanthoxylum/química , Cumarinas/química , Flavonoides/química , Lignanos/aislamiento & purificación , Espectroscopía de Resonancia Magnética , Espectrometría de Masas , Estructura Molecular , Espectrometría de Masa por Ionización de Electrospray , Zanthoxylum/crecimiento & desarrolloRESUMEN
OBJECTIVE: To determine the contents of six heavy metal elements in traditional Chinese medicine of Zanthoxylum nitidum in twelve habitats by ICP-AES. METHODS: Nitric acid- perchloric acid mixed acid digested system was used to completely decomposed the organic compounds effectually. The As, Cr, Hg, Ni, Cd and Pb were determined by the absorption spectroscopy under set up working conditions. RESULTS: An efficient, simple and accurate method was established. The recoveries were 90.82%-101.21% and RSDs were within 3.0%. CONCLUSION: The contents of six heavy metal elements are different in Zanthoxylum nitidum from different habitats. As, Cr and Hg were not detected. The content of Pb which from eleven habitats is consistent with the standards of medicine and export except from Nanning habitats, meanwhile the content of Cd all exceeds those standards.