STUDIES ON THE CHEMICAL CONSTITUENTS FROM ARALIA ELATA

Eight compounds have been isolated from the root bark of Aralia elata.Their structures have been identified by means of physico-chemical and spectral analysis.They are (6′-O-palmitoyl)-β-sitostero1-3-O-β-D-glucoside (A₅), silphiosideA (A₉),chikusetusaponin I_b (A₁₁), araloside A (A₁₂), araloside C (A₁₅), acanthoside D (B₁).Compound A₁₀ is a new natural product, named as araloside A methyl-ester. 3-O-β-D-glucopyranosyl (1→3) β-D-glucopyranosy (1→4)-β-D-glucopyranosyl-oleanolic acid-28-O-β-D-glucopyranoside (A₁₆) is a new compound, named as aralo-side G. Compounds A₅, A₉, A₁₀, A₁₁ A₁₆, and B₁ were isolated for the first time from theplant. ¹³C-NMR chemical shifts of compounds A₉ and A₁₅ were assigned for the first time.