title: Triterpenoid saponins from the root of Anemone tomentosa.
abstract: Three new triterpenoid saponins, tomentoside A (1), B (2) and C (3), along with four known saponins (4-7) were isolated from the root of Anemone tomentosa. The structures of the new compounds were elucidated as 3-O-β-D-ribopyranosyl-(1→3)-α-L-rhamnopyranosyl-(1→2)-[β-D-glucopyranosyl-(1→4)]-α-L-arabinopyranosyl hederagenin 28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside (1), 3-O-β-D-ribopyranosyl-(1→3)-α-L-rhamnopyranosyl-(1→2)-[β-D-glucopyranosyl-(1→4)]-β-D-xylopyranosyl hederagenin 28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside (2) and 3-O-β-D-galactopyranosyl-(1→3)-α-L-rhamnopyranosyl-(1→2)-β-D-xylopyranosyl oleanolic acid 28-O-α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside (3) on the basis of chemical and spectral evidence. In the oligosaccharide chains of compound 3, the characteristic D-galactose residue is a rare structural feature and secondly encountered among triterpenoid saponins from Anemone.
authors.affiliation: Department of Pharmacy, Fourth Military Medical University, Xi'an, People's Republic of China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
authors.forename: Wei
authors.initials: W
authors.lastname: Kang
authors.forename: Liang-jian
authors.initials: LJ
authors.lastname: Hong
authors.forename: Wen-li
authors.initials: WL
authors.lastname: Hai
authors.forename: Xiao-yang
authors.initials: XY
authors.lastname: Wang
authors.forename: Hai-feng
authors.initials: HF
authors.lastname: Tang
authors.forename: Xiang-rong
authors.initials: XR
authors.lastname: Tian
mesh_terms: D031883:Anemone / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry*
chemical_list: D006027:Glycosides; D012503:Saponins; D014315:Triterpenes; C475236:tomentoside A; C475237:tomentoside B