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Neolignans and alkaloids from Piper argyrophyllum



Neolignans and alkaloids from Piper argyrophyllum



Phytochemistry 43(6): 1355-1360



Twenty-three compounds, a novel neolignan nine known neolignans and 13 known alkaloids, were isolated from a methanol extract of stems of Piper argyrophylum. The structure of the new neolignan, 4-(2-piperonyl-2-hydroxy-1-methylethyl-2,5-dimethoxy-2-(2-propenyl)-3,5-cyclohexadien-1-one, was elucidated on the basis of its spectral data, whereas the known neolignans and alkaloids were identified by comparison of their spectral data with those reported earlier. All compounds are new from P. argyrophylum.

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