A new denudatine type C<sub>20</sub>-diterpenoid alkaloid from <i>Aconitum sinchiangense</i> W. T. Wang

<p>A new denudatine-type C<sub>20</sub>-diterpenoid alkaloid, designated as sinchianine (<b>1</b>), together with eight known diterpenoid alkaloids, 12-acetyl-12-<i>epi</i>-napelline (<b>2</b>), 12-<i>epi</i>-napelline (<b>3</b>), neoline (<b>4</b>), talatisamine (<b>5</b>), 14-<i>O</i>-acetylsenbusine A (<b>6</b>) and benzoylaconine (<b>7</b>), songorine (<b>8</b>) and aconitine (<b>9</b>), were isolated from the whole herb of <i>Aconitum sinchiangense</i> W. T. Wang. Their structures were elucidated on the basis of extensive spectroscopic analyses (NMR and HR-ESI-MS) and comparison with data reported in the literature.</p>