A new benzopyran derivative from <i>Pseuduvaria indochinensis</i> Merr.

<div><p>From the twigs and leaves of <i>Pseuduvaria indochinensis</i> Merr., a new benzopyran derivative, pseudindochin (<b>1</b>), was isolated together with three known compounds, oligandrol (<b>2</b>), (6<i>E</i>,10<i>E</i>)-isopolycerasoidol (<b>3</b>) and polycerasoidol (<b>4</b>). The structure of compound <b>1</b> was elucidated on the basis of extensive spectroscopic data interpretation, including 1D, 2D NMR, HR-ESI-MS, UV and IR. Moreover, compounds <b>1</b>–<b>4</b> were evaluated <i>in vitro</i> for their cytotoxic activities against HL-60 and SMMC-7721 cell lines, but these compounds were essentially non-cytotoxic (IC<sub>50</sub>>30 μg/mL).</p></div>




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