One new oleanane-type triterpene glycoside, oleanolic acid-[28-O-β-d-glucopyranosyl]-3-O-[β-d-glucopyranosyl(1→6)-β-d-glucopyranosyl](1→3)[α-l-arabinofuranosyl(1→4)]-β-d-glucuronopyranoside (1), and 3 known ones {oleanolic acid-[28-O-β-d-glucopyranosyl]-3-O-[β-d-galactopyranosyl(1→3)]-[β-d-glucopyranosyl(1→2)]-β-d-glucuronopyranoside (2) chikusetsusaponin IVa methyl ester (3), and chikusetsusaponin IV (4)} were isolated from the leaves of Aralia armata. Their chemical structures were elucidated using a combination of high-resolution electrospray ionization mass spectrometry, 1-dimensional and 2-dimensional nuclear magnetic resonance (NMR) spectral data, as well as comparison with data in the previous literature. This is the first report of full NMR spectroscopic data of 2. Compounds 1-4 displayed weak cytotoxic activity toward KB and HepG2 cell lines, with half-maximal inhibitory concentration₅₀ values ranging from 24.2 ± 0.3 to 32.6 ± 0.8 µM in in vitro assay.

一种新的齐墩果烷型三萜糖苷，齐墩果酸-[28 -O-β - d-吡喃葡萄糖基] -3- O- [ β - d-吡喃葡萄糖基（1→6）-β - d-吡喃葡萄糖基]（1→3） [ α -升-arabinofuranosyl（1→4）] - β - d -glucuronopyranoside（1），和3公知的{齐墩酸[28 -O-β - d吡喃葡萄糖基] -3 -O- [ β - d -galactopyranosyl（1→3）] - [ β - d吡喃葡萄糖基（1→2）] - β -从Aralia armata的叶子中分离出d-葡萄糖醛酸吡喃糖苷（2）chikusetsusaponin IVa甲酯（3）和chikusetsusaponin IV（4）} 。通过结合高分辨率电喷雾电离质谱，一维和二维核磁共振（NMR）光谱数据以及与以前文献中的数据进行比较，阐明了它们的化学结构。这是2的完整NMR光谱数据的首次报道。化合物1 - 4显示朝向KB和HepG2细胞系弱细胞毒活性，用半最大抑制浓度₅₀ 在体外测定中，该值范围从24.2±0.3到32.6±0.8 µM。