Abstract
Chamaejasmone F, a new 11,10-guaiane-type sesquiterpenoid, is isolated from the roots of Stellera chamaejasme Linn., along with four known compounds including two guaiane sesquiterpenoids and two lignans. The structure of the new compound is elucidated by extensive spectroscopic analysis, especially two-dimensional nuclear magnetic resonance spectroscopy and high-resolution electrospray ionization mass spectrometry. The known compounds 1β-hydroxy-10βH-guaia-4,11-dien-3-one and (+)-hinokinin are isolated from the genus Stellera for the first time. In an in vitro assay, chamaejasmone F shows moderate cytotoxic activity against the human triple negative breast cancer cell line MB-MDA-231.
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