Abstract:A new lignan phyllanins A (1) and a lignan phyllanins B (2) that redetermined the absolute configuration, along with four known lignans (3-6) were isolated from the branch and leaf extracts of Phyllanthodendron dunnianum. Their planar structures were mainly determined by a combination of 1D and 2D NMR, HRESIMS spectral analyses, and the absolute configurations of two new compounds were established by DFT GIAO 13 C NMR and electronic circular dichroism (ECD) calculations. In addition, all these six lignans were… Show more
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