Secoiridoids and xanthones from Gentianella nitida.
From Gentianella nitida twelve known metabolites were isolated and identified by HPLC-UV and/or by spectroscopic methods as secologanoside, amaroswerin, amarogentin (secoiridoids), isoorientin (C-glucosylflavone), mangiferin, demethylbellidifolin 8-O-glucoside, norswertianine 1-O-glucoside, swertianine 1-O-primeveroside, swertianine 8-O-glucoside, norswertianine, demethylbellidifolin, and swertianine (xanthone glycosides and aglycones). Secologanoside is reported here for the first time in Gentianaceae species; the antioxidant mangiferin was obtained as the major compound in good yield.
Lacaille-Dubois
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MA
Laboratoire de Pharmacognosie, Faculté de Pharmacie, Université de Bourgogne, 7, Bd Jeanne d'Arc, F-21033 Dijon Cedex, France.
Galle
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Wagner
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