Four triterpenoid saponins were isolated from the root bark of Aralia taibaiensis Z.Z.Wang et H.C.Zheng. On the basis of their chemical properties and spectral data, they were identified as oleanolic acid 3 O [β ...Four triterpenoid saponins were isolated from the root bark of Aralia taibaiensis Z.Z.Wang et H.C.Zheng. On the basis of their chemical properties and spectral data, they were identified as oleanolic acid 3 O [β D xylopyranosyl (1→2) ] [ β D glucopyranosyl (1→3) ] β D glu curonopyranoside (1), tarasaponinⅤ (2), 3 O {[ β D xylopyranosyl (1→2) ] [ β D glucopyranosyl (1→3) ] 6′ O ethyl β D glucuronopyranosyl} oleanolic acid 28 O β D glucopyranoside (3) and 3 O {[ β D xylopyranosyl (1→2) ] [ β D glucopyranosyl (1→3) ] 6′ O n βutyl β D glucuronopyrano syl} oleanolic acid 28 O β D glucopyranoside (4). Compound 1 is a new natural product named taibaienosideⅥ. Compound 2 was isolated from the title plant for the first time. Compounds 3 and 4 are new compounds and named taibaienosideⅦand taibaienosideⅧ, respectively.展开更多
文摘Four triterpenoid saponins were isolated from the root bark of Aralia taibaiensis Z.Z.Wang et H.C.Zheng. On the basis of their chemical properties and spectral data, they were identified as oleanolic acid 3 O [β D xylopyranosyl (1→2) ] [ β D glucopyranosyl (1→3) ] β D glu curonopyranoside (1), tarasaponinⅤ (2), 3 O {[ β D xylopyranosyl (1→2) ] [ β D glucopyranosyl (1→3) ] 6′ O ethyl β D glucuronopyranosyl} oleanolic acid 28 O β D glucopyranoside (3) and 3 O {[ β D xylopyranosyl (1→2) ] [ β D glucopyranosyl (1→3) ] 6′ O n βutyl β D glucuronopyrano syl} oleanolic acid 28 O β D glucopyranoside (4). Compound 1 is a new natural product named taibaienosideⅥ. Compound 2 was isolated from the title plant for the first time. Compounds 3 and 4 are new compounds and named taibaienosideⅦand taibaienosideⅧ, respectively.
