Abstract
Six novel flavonostilbenes, alopecurones A-F, were isolated from the roots of Sophora alopecuroides, in addition to a new 5-deoxyflavanone with a lavandulyl group, alopecurone G. The structures of alopecurones A-F, which are flavonostilbenes composed of a flavanone [5,7,2′,4′-tetrahydroxy-8-lavandulylfavanone (sophoraflavanone G) or its 2′-methyl ether (leachianone A)] condensed with a stilbene [3,5,4′-trihydroxystilbene (resveratrol)] through the A ring of the flavanone skeleton, were established by spectroscopic analysis. Chemical relationships between S. alopecuroides, S. leachiana and S. moorcroftiana are discussed on the basis of their phenolic components.
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