Four new phenylpropanoid glycosides from the leaves of <i>Illicium dunnianum</i> and their neuroprotective activities

Four previously unreported phenylpropanoid glycosides (<b>1</b>–<b>4</b>), together with four known analogues (<b>5</b>–<b>8</b>), were isolated from the leaves of <i>Illicium dunnianum</i>. The structures of these new compounds were elucidated based on spectroscopic analysis (HR-ESI-MS, NMR, IR, UV) and chemical methods. In addition, the neuroprotective activities of all the isolates were evaluated by measuring their cell viability in H₂O₂-induced OLN-93 cell injury model.