A new daphnane diterpenoid from <i>Excoecaria venenata</i> with inhibitory effect on human leukaemia HL-60 cells

<div><p>A new daphnane diterpenoid, venenatin (<b>1</b>), along with six known compounds, was isolated from the aerial parts of <i>Excoecaria venenata</i>. The structure of <b>1</b> was elucidated on the basis of extensive spectroscopic analysis. Compound <b>1</b> exhibited growth inhibitory effect on human leukaemia HL-60 cell line with IC<sub>50</sub> value of 28.10 μM.</p></div>