title: A new triterpenoid saponin, bredemeyeroside B. from the roots of Bredemeyera floribunda.
abstract: A new triterpenoid saponin named bredemeyeroside B has been isolated from the roots of Bredemeyera floribunda and its structure elucidated as 3-O-beta-D-glucopyranosyl-2 beta, 3 beta, 27-trihydroxyolean-12-en-23,28-dioic acid 28-O-beta-D-xylopyranosyl-(1-->4)-[beta-D-apiofuranosyl-(1-->3)]-a lpha -L-rhamnopyranosyl-(1-->2)-[alpha-L-rhamnopyranosyl-(1-->3] -beta-D-fucopyranoside by means of MS, NMR and chemical evidence. In addition rutin was also isolated. In laboratory tests bredemeyeroside B showed snake venom antidote activity.
authors.affiliation: Núcleo de Pesquisas de Produtos Naturals, Universidade Federal do Rio de Janeiro, Brasil.
authors.forename: M do D
authors.initials: Mdo D
authors.lastname: Daros
authors.forename: F J
authors.initials: FJ
authors.lastname: Matos
authors.forename: J P
authors.initials: JP
authors.lastname: Parente
mesh_terms: D000997:Antivenins / Q000737:chemistry / Q000302:isolation & purification*; D001938:Brazil; D002240:Carbohydrate Sequence; D003435:Crotalid Venoms / Q000037:antagonists & inhibitors; D008969:Molecular Sequence Data; D009828:Oleanolic Acid / Q000031:analogs & derivatives*; 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: D000997:Antivenins; D003435:Crotalid Venoms; D012503:Saponins; D014315:Triterpenes; C103696:bredemeyeroside B; D009828:Oleanolic Acid