Novel Secoiridoid glucosides in Olea europaea leaves suffering from boron deficiency.
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.
Karioti
Anastasia
A
Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, Athens, Greece.
Chatzopoulou
Aliki
A
Bilia
Anna Rita
AR
Liakopoulos
Georgios
G
Stavrianakou
Sotiria
S
Skaltsa
Helen
H
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
D039823:Iridoids; D001895:Boron