title: Triterpenoid saponins from Becium grandiflorum var. obovatum.
abstract: Two new triterpenoid saponins, beciumecine 1 and 2, were isolated from the root bark of Becium grandiflorum var. obovatum and their structures established as 3-O-(beta-D-glucopyranosyl) terminolic acid 28-O-beta-D-apiofuranosyl(1-3)-[alpha-L-rhamnopyranosyl (1-3)-beta-D-xylopyranosyl(1-4)]-alpha-L-rhamnopyranosyl (1-2)-alpha-L-arabinopyranoside and 3-O-(beta-D-glucopyranosyl) 24-hydroxyterminolic acid 28-O-alpha-L-rhamnopyranosyl(1-3)-beta-D-xylopyranosyl(1-4)-alpha-L- rhamnopyranosyl(1-2)-alpha-L-arabinopyranoside, respectively.
authors.affiliation: Laboratory for Ecological Chemistry, University of Stellenbosch, South Africa.
authors.forename: I
authors.initials: I
authors.lastname: Burger
authors.forename: B V
authors.initials: BV
authors.lastname: Burger
authors.forename: C F
authors.initials: CF
authors.lastname: Albrecht
authors.forename: H S
authors.initials: HS
authors.lastname: Spies
authors.forename: P
authors.initials: P
authors.lastname: Sándor
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry* / Q000302:isolation & purification* / Q000494:pharmacology; D002240:Carbohydrate Sequence; D006801:Humans; D008175:Lung Neoplasms / Q000188:drug therapy; D008969:Molecular Sequence Data; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification* / Q000494:pharmacology; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification* / Q000494:pharmacology; D014407:Tumor Cells, Cultured
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D012503:Saponins; D014315:Triterpenes; C117118:beciumecine 1; C117119:beciumecine 2