title: Novel Secoiridoid glucosides in Olea europaea leaves suffering from boron deficiency.
abstract: From the methanol extract of boron deficient Olea europaea leaves, two secoiridoid glycosides, not detected in leaf extracts of untreated plants, 6'-E-p-coumaroyl-secologanoside and 6'-O-[(2E)-2,6-dimethyl-8-hydroxy-2-octenoyloxy]-secologanoside, were isolated together with three known secoiridoid glycosides, oleuropein, oleoside dimethyl ester, and secologanoside. The structures of the isolated compounds were established by means of NMR and MS spectral analyses. The above novel secoiridoids were synthesized by the plant as a physiological response to nutrient stress.
authors.affiliation: Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, Athens, Greece.
authors.forename: Anastasia
authors.initials: A
authors.lastname: Karioti
authors.forename: Aliki
authors.initials: A
authors.lastname: Chatzopoulou
authors.forename: Anna Rita
authors.initials: AR
authors.lastname: Bilia
authors.forename: Georgios
authors.initials: G
authors.lastname: Liakopoulos
authors.forename: Sotiria
authors.initials: S
authors.lastname: Stavrianakou
authors.forename: Helen
authors.initials: H
authors.lastname: Skaltsa
mesh_terms: D001895:Boron / Q000737:chemistry* / Q000172:deficiency; D039823:Iridoids / Q000138:chemical synthesis / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy / Q000379:methods / Q000592:standards; D013058:Mass Spectrometry; D008968:Molecular Conformation; D031658:Olea / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry*; D012015:Reference Standards; D013237:Stereoisomerism
chemical_list: D039823:Iridoids; D001895:Boron