Natural Products and Bioprospecting (Feb 2023)

Five new limonoids isolated from Walsura robusta

  • Li Hou,
  • Cui-Xuan Mei,
  • Chun-Mao Yuan,
  • Gui-Hua Tang,
  • Duo-Zhi Chen,
  • Qing Zhao,
  • Hong-Ping He,
  • Ming-Ming Cao,
  • Xiao-Jiang Hao

DOI
https://doi.org/10.1007/s13659-023-00371-6
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 8

Abstract

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Abstract Five new toosendanin limonoids with highly oxidative furan ring walsurobustones A-D (1–4), and one new furan ring degraded limonoid walsurobustone E (5) together with one known compound toonapubesic acid B (6) were isolated from the leaves of Walsura robusta. Their structures were elucidated by NMR and MS data. Especially, the absolute configuration of toonapubesic acid B (6) was confirmed by X-ray diffraction study. Compounds 1–6 exhibited good cytotoxicity against the cancer cell lines HL-60, SMMC-7721, A-549, MCF-7, and SW480.

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