3-Oxo-γ-costic acid fungal-transformation generates eudesmane sesquiterpenes with in vitro tumor-inhibitory activity

Mohamed Elamir F. Hegazy, Ahmed A. El-Beih, Ahmed R. Hamed, Abeer A. Abd El Aty, Naglaa S. Mohamed, Paul W. Paré

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

While select eudesmane sesquiterpenes exhibit anti-neoplastic activity, tumor-inhibition for costic-acids has not been established. Here biological activity of 3-oxo-γ-costic acid (1), previously isolated from Chiliadenus montanus, as well as new sesquiterpenes (2–5) and the known derivative, 3-oxoeudesma-1,4,11(13)-trien-7-1061αH-l2-oic acid (6), all produced from 1 by the fungus Athelia rolfsii, are reported. Structures were elucidated using MS and NMR spectroscopy with activity-screening utilizing human colon- and lung-tumor lines, Caco-2 and A549 respectively. Compound 1 exhibited anti-proliferative activity against Caco-2 (IC50 39 µM) and 2 was active against A549 (IC50 74 µM) suggesting therapeutic potential for the original substrate and a bio-transformed product.

Original languageEnglish
Pages (from-to)3825-3828
Number of pages4
JournalBioorganic and Medicinal Chemistry Letters
Volume27
Issue number16
DOIs
StatePublished - 2017

Keywords

  • 3-Oxo-γ-costic acid
  • Athelia rolfsii
  • Chiliadenus montanus
  • Fungal transformation
  • Tumor inhibition activity

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