A new diterpenoid from the leaves of <i>Platycladus orientalis</i>

<p>A new diterpenoid, 17-methyl-8, 13-labdadien-15, 16-olid-19-oic acid methyl ester (<b>1</b>), along with two known compounds <b>2</b> and <b>3</b>, were isolated from the leaves of <i>Platycladus orientalis</i> (L.) Franco. The structures were confirmed based on the analysis of HR-MS, 1D-NMR, and 2D-NMR spectra and the configuration of <b>1</b> was confirmed by the single-crystal X-ray diffraction.</p>