title: New secoiridoid from olive mill wastewater.
abstract: A new secoiridoid, olenoside A (1a) and its known epimer olenoside B (1b), were isolated from olive mill wastewater as a mixture of two isomers. Their structures, 1-methyl-7-oxo-6,6a,8,8a-tetrahydro-1H,3H-pyrano[3,4-c]pyran-4-carboxylic acid methyl ester, were determined by spectroscopic methods including 2-D NMR. The structure of major compound 1a was confirmed by X-ray diffraction.
authors.affiliation: Laboratoire de Chimie des Substances Naturelles, Faculté des Sciences de Sfax, BP 1171, 3000 Sfax, Tunisie.
authors.forename: Nahla
authors.initials: N
authors.lastname: Damak
authors.forename: Noureddine
authors.initials: N
authors.lastname: Allouche
authors.forename: Besma
authors.initials: B
authors.lastname: Hamdi
authors.forename: Marc
authors.initials: M
authors.lastname: Litaudon
authors.forename: Mohamed
authors.initials: M
authors.lastname: Damak
mesh_terms: D003461:Crystallography; D039823:Iridoids / Q000032:analysis* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D031658:Olea / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D014866:Waste Products / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000032:analysis*; D014961:X-Ray Diffraction
chemical_list: D039823:Iridoids; D014866:Waste Products