| Literature DB >> 19670162 |
Xiang Fu1, Xing-Cong Li, Yan-Hong Wang, Bharathi Avula, Troy J Smillie, Wilfred Mabusela, James Syce, Quinton Johnson, William Folk, Ikhlas A Khan.
Abstract
Phytochemical investigation of the leaves of Sutherlandia frutescens led to the isolation of four new 3-hydroxy-3-methylglutaroyl-containing flavonol glycosides, sutherlandins A-D ( 1- 4). Their structures were elucidated by chemical and spectroscopic methods as quercetin 3- O- beta- D-xylopyranosyl(1 --> 2)-[6- O-(3-hydroxy-3-methylglutaroyl)]- beta- D-glucopyranoside ( 1), quercetin 3- O- beta- D-apiofuranosyl(1 --> 2)-[6- O-(3-hydroxy-3-methylglutaroyl)]- beta- D-glucopyranoside ( 2), kaempferol 3- O- beta- D-xylopyranosyl(1 --> 2)-[6- O-(3-hydroxy-3-methylglutaroyl)]- beta- D-glucopyranoside ( 3), and kaempferol 3- O- beta- D-apiofuranosyl(1 --> 2)-[6- O-(3-hydroxy-3-methylglutaroyl)]- beta- D-glucopyranoside ( 4). Georg Thieme Verlag KG Stuttgart . New York.Entities:
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Year: 2009 PMID： 19670162 DOI： 10.1055/s-0029-1186030
Source DB: PubMed Journal: Planta Med ISSN： 0032-0943 Impact factor: 3.352