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Original Articles

Acylated flavone C-glycosides from Hemistepta lyrata

, , , , &
Pages 776-780 | Received 14 Apr 2010, Accepted 23 Jun 2010, Published online: 13 Sep 2010
 

Abstract

Two new acylated flavone C-glycosides, 6″-O-(2‴-methylbutyryl)isoswertisin (1) and 6″-O-(2‴-methylbutyryl)isoswertiajaponin (2), together with four known acylated flavone C-glycosides, were isolated for the first time from the whole plants of Hemistepta lyrata (Compositae). Their structures were elucidated on the basis of chemical and spectroscopic methods including HR-ESI-MS, ESI-MS, UV, IR, and 1D and 2D NMR spectral techniques.

Acknowledgement

This project was financially supported by the National Sciences and Technology Program of China (2007BAI38B05).

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