title: Investigation of mammalian lignan precursors in flax seed: first evidence of secoisolariciresinol diglucoside in two isomeric forms by liquid chromatograph/mass spectrometry.
abstract: A strong research effort has been devoted in recent years to the mammalian lignans enterolactone and enterodiol because of their claimed protective effects against breast and colon cancer. Some plant lignans appear to be precursors of these molecules. This paper reports a novel identification procedure for one of these precursors, the secoisolariciresinol diglucoside, in the extracts of defatted flax-seed meal. The procedure is based on high-performance liquid chromatography coupled with either ionspray or continuous-flow fast-atom bombardment mass spectrometry. The application of these techniques allowed the identification in flax seed of two isomeric forms of this precursor for the first time. The isomers are reasonable the two diastereoisomers, due to the two equivalent stereogenic centers present in the molecule.
authors.affiliation: Dipartimento di Scienze Farmaceutiche, Università di Firenze, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Bambagiotti-Alberti
authors.forename: S A
authors.initials: SA
authors.lastname: Coron
authors.forename: C
authors.initials: C
authors.lastname: Ghiara
authors.forename: G
authors.initials: G
authors.lastname: Moreti
authors.forename: A
authors.initials: A
authors.lastname: Raffaelli
mesh_terms: D002072:Butylene Glycols / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D005960:Glucosides / Q000737:chemistry*; D007536:Isomerism; D017705:Lignans / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013056:Spectrophotometry, Ultraviolet
chemical_list: D002072:Butylene Glycols; D005960:Glucosides; D017705:Lignans; C090142:secoisolariciresinol diglucoside