A new cycloartane triterpenoid glycoside from <i>Souliea vaginata</i>

<p>One new cycloartane triterpenoid glycoside, soulieoside Q (<b>1</b>), together with four known compounds (<b>2</b>−<b>5</b>) were isolated from the ethanolic extract of the rhizomes of <i>Souliea vaginata</i> Maxim. The structure of the new compound was determined by extensive spectroscopic analysis including 1D and 2D NMR and HRESIMS, as well as chemical methods. Compound <b>1</b> was evaluated for its cytotoxic activities against HepG2 and A549 cancer cell lines.</p>