Four diterpenoids, including a new ent-kaurane diterpene (1), were isolated from the rhizome of Aralia fargesii Franch. On the basis of chemical and spectral evidence (IR, EI-MS, HREI-MS, H-1-NMR, C-13-NMR and HMQC), ...Four diterpenoids, including a new ent-kaurane diterpene (1), were isolated from the rhizome of Aralia fargesii Franch. On the basis of chemical and spectral evidence (IR, EI-MS, HREI-MS, H-1-NMR, C-13-NMR and HMQC), the structure of compound 1 was established to be 17-acetoxy-16alpha-ent-kauran-19-oic acid The other three known compounds were identified as ent-pimera-8(14) 15-dien-19-oic acid (2), 16alpha-hydroxy-( -)-kauran-19-oic acid (3) and 16alpha-17-dihydroxy-ent-kauran-19-oic acid (4). The three known diterpenoids were obtained from this plant for the first time.展开更多
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 diterpenoids, including a new ent-kaurane diterpene (1), were isolated from the rhizome of Aralia fargesii Franch. On the basis of chemical and spectral evidence (IR, EI-MS, HREI-MS, H-1-NMR, C-13-NMR and HMQC), the structure of compound 1 was established to be 17-acetoxy-16alpha-ent-kauran-19-oic acid The other three known compounds were identified as ent-pimera-8(14) 15-dien-19-oic acid (2), 16alpha-hydroxy-( -)-kauran-19-oic acid (3) and 16alpha-17-dihydroxy-ent-kauran-19-oic acid (4). The three known diterpenoids were obtained from this plant for the first time.
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.
