title: Structural confirmation of decussatin, a Swertia decussata xanthone.
abstract: Reinvestigation of the plant, Swertia decussata resulted in the isolation of four antioxidant xanthones, which were characterized as 1-hydroxy-3,7,8-trimethoxy, 1,8-dihydroxy-3,7-dimethoxy, 1,7-dihydroxy-3,8-dimethoxy and 1,7,8-trihydroxy-3-methoxyxanthones. The structural ambiguity of the first compound was settled by ASIS-NMR and 2D NOESY spectroscopy.
authors.affiliation: Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
authors.forename: Gajanan J
authors.initials: GJ
authors.lastname: Chintalwar
authors.forename: Subrata
authors.initials: S
authors.lastname: Chattopadhyay
mesh_terms: D015394:Molecular Structure; D013057:Spectrum Analysis / Q000379:methods*; D029967:Swertia / Q000737:chemistry*; D044004:Xanthones / Q000737:chemistry*
chemical_list: D044004:Xanthones; C508659:decussatin