A new oleanane type pentacyclic triterpenoid saponin from the husks of xanthoceras sorbifolium bunge and its neuroprotection on PC12 cells injury induced by Aβ_25-35

A new triterpenoid saponin (1), 3-O-[β-D-glucopyranosyl(1→6)]-(2′-angeloyl)-β-D-glucopyranosyl-28-O-β-D-glucopyranosyl(1→6)[α-L-rhamnopyranosyl(1→2)-β-D-glucopyranosyl]-21-O-acetyl-16-deoxybarringtogenol C, together with four known saponins (2 ∼ 5) were isolated from the husks of Xanthoceras sorbifolium Bunge. Their structures were characterized by HR-ESI-MS, 1D-NMR, 2D-NMR spectra and chemical methods. Compound 1 exhibited excellent...