title: Further flavonol and iridoid glycosides from Ajuga remota aerial parts.
abstract: Five new iridoid glycosides characterised as 6-keto-8-acetylharpagide (1), 6,7-dehydro-8-acetylharpagide (2), 7,8-dehydroharpagide (3), 8-acetylharpagide-6-O-beta-glucoside (4), harpagide-6-O-beta-glucoside (5) together with three flavonol glycosides, myricetin 3-O-rutinoside-4'-O-rutinoside (6), myricetin 3-O-rutinoside-3'-O-rutinoside (7) and isorhamnetin 3-O-rutinoside-7-O-rutinoside-4'-O-beta-glucoside (8) have been isolated from the aerial parts of Ajuga remota. Also isolated were two known compounds ajugarin IV and ajugarin V. Their structures were established using spectroscopic methods including UV, IR, FAB-MS, HR-MS, 1D and 2D NMR techniques.
authors.affiliation: Chemistry Department, Maseno University, Maseno, Kenya.
authors.forename: Lawrence Onyango Arot
authors.initials: LO
authors.lastname: Manguro
authors.forename: Joseph Achola
authors.initials: JA
authors.lastname: Ogur
authors.forename: Dennis Magio
authors.initials: DM
authors.lastname: Okora
authors.forename: Samuel Otieno
authors.initials: SO
authors.lastname: Wagai
authors.forename: Peter
authors.initials: P
authors.lastname: Lemmen
mesh_terms: D031328:Ajuga / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry
chemical_list: D006027:Glycosides