Abstract
Two new prenylflavanones, euchrenones a 7 and a 8, were isolated from roots and stems of Euchresta horsfieldii distributed in Yunnan, China, in addition to a known flavanone (glabrol), a pterocarpan (maackiain) and a ferulic acid ester. By means of spectroscopic analysis, the structures of euchrenones a 7 and a 8 were determined to be 7,2′,4′-trihydroxy-8-γ,γ-dimethylallyl- and 7,2′-dihydroxy-8,5′-di(γ,γ-dimethylallyl)-4′-methoxyflavanone, respectively.
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