A flavonoid sulphate and other compounds from the roots of Centaurea bracteata. |
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| Authors: | G Flamini M Pardini I Morelli |
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| Institution: | Dipartimento di Chimica Bioorganica e Biofarmacia, Universita di Pisa, Via Bonanno 33, 56126 Pisa, Italy. flamini@farm.unipi.it |
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| Abstract: | The roots of Centaurea bracteata Scop. (Asteraceae) have been studied for the first time. Twenty-three compounds were isolated and identified, namely a sterol glucoside, two quinic acid derivatives, one sugar, and 19 flavonoids (five sulphates), one of which, centaradixin, resulted in a new natural product. Structural elucidation was performed mainly by means of FABMS, 1D and 2D NMR spectroscopy. NMR data of some sulphate flavonoids are reported for the first time. |
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