4.7 Article

Cembrane-type diterpenoids from the Chinese liverwort Chandonanthus birmensis

Journal

PHYTOCHEMISTRY
Volume 203, Issue -, Pages -

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.phytochem.2022.113376

Keywords

Chandonanthus birmensis Steph; Lophoziaceae; Liverwort; Cembrane diterpenoids; Cytotoxicity

Funding

  1. National Natural Science Foundation of China [81874293, 81630093]
  2. Major Basic Research Program of the Shandong Provincial Natural Science Foundation of China [ZR2019ZD26]
  3. National Key R & D Pro- gram of China [2019YFA0905700]

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A chemical investigation of the Chinese liverwort revealed five undescribed cembrane-type diterpenoids, along with known cembrane diterpenes, a fusicoccane-type diterpenoid, and a dolabellane-type diterpenoid. The structures were determined through comprehensive analysis and their cytotoxicity against cancer cell lines was evaluated.
A chemical investigation of the Chinese liverwort Chandonanthus birmensis Steph identified five undescribed cembrane-type diterpenoids, together with six known cembrane diterpenes, one fusicoccane-type diterpenoid, and a dolabellane-type diterpenoid. Their structures were established by comprehensive analysis of HRESIMS, NMR spectroscopic data, electronic circular dichroism (ECD) calculations and single-crystal X-ray diffraction analysis. Cytotoxicity tests of the isolated diterpenoids against five cancer cell lines (A2780, A549, H460, H460RT, and HeLa) revealed that several compounds showed moderate inhibitory effects with IC50 values ranging from 11.1 to 36.2 mu M.

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