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Molecules 2014, 19(5), 6727-6736; doi:10.3390/molecules19056727

Four New Flavonol Glycosides from the Leaves of Brugmansia suaveolens

1,* , 2, 3, 4, 3, 5 and 1
1 Department of Pharmaceutical/Medicinal Chemistry, University of Tübingen, Tübingen 72076, Germany 2 Escuela de Quimica and CIPRONA, University of Costa Rica, San José 2060, Costa Rica 3 Department of Organic Chemistry, University of Tübingen, Tübingen 72076, Germany 4 Department of Industrial Pharmacy, Federal University of Santa Maria, Santa Maria 97105-900, Brazil 5 Department of Pharmaceutical Biology and Biotechnology, University of Freiburg, Freiburg im Breisgau 79104, Germany
* Author to whom correspondence should be addressed.
Received: 31 March 2014 / Revised: 16 May 2014 / Accepted: 19 May 2014 / Published: 22 May 2014
(This article belongs to the Section Natural Products)
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Four new flavonol glycosides were isolated from the leaves of Brugmansia suaveolens: kaempferol 3-O-β-D-glucopyranosyl-(1'''→2'')-O-α-L-arabinopyranoside (1), kaempferol 3-O-β-D-glucopyranosyl-(1'''→2'')-O-α-L-arabinopyranoside-7-O-į-D-gluco-pyranoside (2), kaempferol 3-O-β-D-[6'''-O-(E-caffeoyl)]-glucopyranosyl-(1'''→2'')-O-α-l-arabinopyranoside-7-O-β-D-glucopyranoside (3), and kaempferol 3-O-β-D-[2'''-O-(E-caffeoyl)]-glucopyranosyl-(1'''→2'')-O-α-l-arabinopyranoside-7-O-β-D-glucopyranoside (4). The structure elucidation was performed by MS, 1D and 2D NMR analyses.
Keywords: Brugmansia suaveolens; Solanaceae; acylated kaempferol glycosides Brugmansia suaveolens; Solanaceae; acylated kaempferol glycosides
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Geller, F.; Murillo, R.; Steinhauser, L.; Heinzmann, B.; Albert, K.; Merfort, I.; Laufer, S. Four New Flavonol Glycosides from the Leaves of Brugmansia suaveolens. Molecules 2014, 19, 6727-6736.

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