title: Bacopasaponins E and F: two jujubogenin bisdesmosides from Bacopa monniera.
abstract: Two new dammarane-type jujubogenin bisdesmosides, bacopasaponins E and F of biological interest have been isolated from the reputed Indian medicinal plant Bacopa monniera and defined as 3-O-[beta-D-glucopyranosyl(1 --> 3)[alpha-L-arabinofuranosyl(1 --> 2)]alpha-L-arabinopyranosyl]-20-O-(alpha-L-arabinopyranosyl) jujubogenin and 3-O-[beta-D-glucopyranosyl(1 --> 3)[alpha-L-arabinofuranosyl(1 --> 2)]beta-D-glucopyranosyl]-20-O-alpha-L-arabinopyranosyl) jujubogenin respectively by spectroscopic methods and some chemical transformations.
authors.affiliation: Indian Institute of Chemical Biology, Jadavpur, Calcutta.
authors.forename: S B
authors.initials: SB
authors.lastname: Mahato
authors.forename: S
authors.initials: S
authors.lastname: Garai
authors.forename: A K
authors.initials: AK
authors.lastname: Chakravarty
mesh_terms: D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D009844:Oligosaccharides / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes
chemical_list: D004224:Diterpenes; D009844:Oligosaccharides; D012503:Saponins; D014315:Triterpenes; C411342:bacopasaponin E; C411343:bacopasaponin F; C400159:jujubogenin