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Two new chlorinated sesquiterpenes from Sigesbeckia orientalis

  • Nguyen Thi Viet Thanh
  • , Dang Thanh Tung
  • , Le Van Duong
  • , Tran Thi Minh
  • , Vu Dinh Hoang
  • , Seo Young Yang
  • , Pham Hai Yen
  • Hanoi University of Science and Technology
  • Vietnamese Academy of Science and Technology

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Two new chlorinated guaianane-type sesquiterpenes (named chlosigesolides A and B) together with eight known compounds were isolated from the leaves and twigs of Sigesbeckia orientalis. Their structures were determined by analysis of HR-ESI-MS, 1D- and 2D-NMR spectral data as well as comparison with the literature. Absolute configurations of new compounds were elucidated by NOESY and ECD methods. Chlosigesolide A inhibited NO production in LPS-stimulated RAW264.7 macrophages with IC50 value of 10.9 ± 0.8 μM. Other compounds exhibited inhibitory activity at IC50 in range of 26.5 to 49.7 μM.

Original languageEnglish
Pages (from-to)3677-3684
Number of pages8
JournalNatural Product Research
Volume37
Issue number21
DOIs
StatePublished - 2023

Keywords

  • Chlorinated sesquiterpene
  • Sigesbeckia orientalis
  • chlosigesolide
  • guaianolide
  • nitric oxide inhibitor

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