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Published on: July 5, 2017
Acylated flavonoids from pseudognaphalium species
1Faculty of Chemistry and Biology, University of Santiago de Chile, Casilla 40, Correo 33, Santiago, Chile, and Department of Physical Chemistry and Organic Chemistry, University of Vigo, Vigo 36002, Pontevedra, Spain.
Abstract:
Two new acylated flavonoids have been isolated from the resinous exudates of Pseudognaphalium robustum and Pseudognaphalium cheirantifolium. Their structures were elucidated by high-resolution spectroscopic methods as 5,7,8-trihydroxy-3-methoxyflavone 8-O-[(E)-2-methyl-2-butenoate] (1) and 5,7,8-trihydroxy-3, 6-dimethoxyflavone 8-O-[(E)-2-methyl-2-butenoate] (2).

