Abstract: Eleven constituents were isolated from root bark of Aralia armata (Wall.) Seem. Their structures were elucidated by spectra(IR, MS, 1H-NMR and 13C-NMR) and chemical analyses. They were deglucose chikusetsusaponin Ⅳ (AT–Ⅰ), chikusetsusaponin Na (AT–Ⅱ ), zingibroside R1 (AT–Ⅲ), ginsenin R0 (AT–IV), decaisneanaside (AT–Ⅴ), armatoside (AT-Ⅶ), araloside A (AT–Ⅶ), octacosanoic acid (AT–Ⅷ), β-sitosterol (ATIX ), mixture of β-sitosterol and stigmastterol (AT–×), oleanolic acid (AT–Xl ). They were for the first time found in this plant, AT–Ⅵ is a new saponin.

Key words: Aralia armata, Saponins, Armatoside