Structural confirmation of decussatin, a Swertia decussata xanthone.
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.
Chintalwar
Gajanan J
GJ
Bio-Organic Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
Chattopadhyay
Subrata
S
D015394:Molecular Structure; D013057:Spectrum Analysis / Q000379:methods*; D029967:Swertia / Q000737:chemistry*; D044004:Xanthones / Q000737:chemistry*
D044004:Xanthones; C508659:decussatin