title: [Triterpenoid saponins of Alternanthera philoxeroides (Mart.) Griseb].
abstract: In order to find the anti-virus constituents of Alternanthera philoxeroides (Mart.) Griseb, the investigation was carried out. The paper reported the five triterpenoid saponins isolated from n-BuOH fraction: 3-O-beta-D-glucopyranosyl (1-->3)-O-[beta-D-glucopyranosyl-oleanolic acid]-28-O-beta-D-glucuronopyranoside (1), oleanolic acid-3-O-beta-D-glucuronopyranoside (calenduloside E, 2), oleanolic acid-3-O-beta-D-glucopyranosyl-28-Obeta-D-glucopyranosyl ester (chikusetsusaponin-IVa, 3), 3-O-(6'-O-butyl-beta-D-glucuronopyranosyl)-oleanolic acid-28-O-beta-D-glucopyranosyl ester (4) and hederagenin-3-O-beta-D-glucuronopyranoside (HN-sapoins K, 5). 1 is a new compound, saponins 4 and 5 were isolated from the plant for the first time.
authors.affiliation: Beijing Institute of Radiation Medicine, Beijing 100850, China.
authors.forename: Qing-lan
authors.initials: QL
authors.lastname: Guo
authors.forename: Bin
authors.initials: B
authors.lastname: Li
authors.forename: Jian
authors.initials: J
authors.lastname: Li
authors.forename: Jing-jing
authors.initials: JJ
authors.lastname: Li
authors.forename: Li-ying
authors.initials: LY
authors.lastname: Xia
authors.forename: Jun-xing
authors.initials: JX
authors.lastname: Dong
mesh_terms: D027703:Amaranthaceae / Q000737:chemistry*; D000998:Antiviral Agents / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D056945:Hep G2 Cells; D006515:Hepatitis B virus / Q000187:drug effects; D006801:Humans; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: C578409:3-O-(6'-O-butyl-beta-D-glucuronopyranosyl)-oleanolic acid-28-O-beta-D-glucopyranosyl ester; C578407:3-O-beta-D-glucopyranosyl (1-3)-O-(beta-D-glucopyranosyl-oleanolic acid)-28-O-beta-D-glucuronopyranoside; D000998:Antiviral Agents; D012503:Saponins; D014315:Triterpenes; C543984:calenduloside E; C578408:hederagenin-3-O-beta-D-glucuronopyranoside; C098580:chikusetsu saponin IVa; D009828:Oleanolic Acid