Two new dihydroflavonoids were obtained from the traditional Chinese medicinal herbPatrinia villosa Juss. Their structures were elucidated as (2S)-5, 7, 2′, 6′-tetrahydroxy-6, 8-di (γ,γ-dimethylallyl) flavanone (1) and (2S)-5, 7, 2′, 6′-tetrahydroxy-6-lavandulylated flavanone (2) byspectroscopic methods including UV, IR, HR-TOF-MS, 1D NMR and 2D NMR techniques.
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