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A New Dimeric Lignan from the Stems of Willughbeia edulis

  • Received : 2022.02.17
  • Accepted : 2022.05.13
  • Published : 2022.06.30

Abstract

As part of our continued study on the chemical constituents of Willughbeia edulis stems, a new dimeric lignan named edulignan (1) was isolated from its EtOAc-soluble extract. Based on NMR spectroscopic interpretation, the planar structure of 1 has been suggested to have two 2-substituted 4-chromanone subunits with different stereochemical configurations. In addition, the MS/MS analysis of the products obtained by acid-catalyzed hydrolysis of 1 was supportive of its structure. Unfornatually, the new compound 1 did not show 𝛼-glucosidase inhibitory activity with an IC50 value > 250 𝜇M.

Keywords

Acknowledgement

This research is funded by Vietnam National University Ho Chi Minh City (VNU-HCM) under grant number NCM2020-18-01, to Mai Thanh Thi Nguyen.

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