A new nortriterpenoid and an ergostane-type steroid from the fruiting bodies of the fungus <i>Ganoderma resinaceum</i>

<p>One new expoxy nortriterpenoid (<b>1</b>) and one new ergostane-type steroid (<b>2</b>), together with seven known steroids (<b>3</b>–<b>9</b>), were obtained from the fruiting bodies of the fungus <i>Ganoderma resinaceum</i>. The new compounds were elucidated on the basis of extensive spectroscopic data (MS, NMR, IR, and UV) and the known compounds were identified by comparing spectroscopic data with those reported in literature.</p

A novel strategy for rapid quantification of 20(<i>S</i>)-protopanaxatriol and 20(<i>S</i>)-protopanaxadiol saponins in <i>Panax notoginseng</i><i>P. ginseng</i> and <i>P. quinquefolium</i>

<div><p>A novel strategy for the qualitative and quantitative determination of 20(<i>S</i>)-protopanaxatriol saponins (PTS) and 20(<i>S</i>)-protopanaxadiol saponins (PDS) in <i>Panax notoginseng</i>, <i>Panax ginseng</i> and <i>Panax quinquefolium</i>, based on the overlapping peaks of main components of PTS (calibrated by ginsenoside Rg1) and PDS (calibrated by ginsenoside Rb1), was proposed. The analysis was performed by using high-performance liquid chromatography coupled with evaporative light scattering detection (HPLC-ELSD). Under specific chromatographic conditions, all samples showed two overlapping peaks containing several main ginsenosides belonging to PTS and PDS, respectively. The overlapping peaks were also identified by using HPLC–MS. Based on the sum and ratio of PTS and PDS, 60 tested <i>Panax</i> samples were divided into three main clusters according to their species. The findings suggested that this strategy provides a simple and rapid approach to quantify PTS and PDS in <i>Panax</i> herbs.</p></div