Two new flavone C-glycosides, named as panzeroside A and B were isolated from the n-BuOH crude extract of the aerial parts of Panzeria alaschanica Kuprian. Their structures were elucidated by spectroscopic methods, including UV, IR, ESI-MS, 1D NMR, and 2D NMR techniques. Anti-inflammatory and analgesic activities of were assessed in rats by the hot plate test, paw pressure, and carrageenan-induced paw oedema. The two new compounds showed significant and dose-dependent analgesic and anti-inflammatory effects. Graphical abstract O O H3CO
The petroleum ether (PE) extract from Ixeris chinensis was submitted to chromatographic separation. A new sesquiterpene, namely 14-noreudesma-3-hydroxy-3-en-2,9-dione, was isolated from the PE extract. The structures of the sesquiterpene was elucidated by using spectroscopic methods, including UV, IR, HR-ESI-MS and extensive 1D and 2D NMR techniques.
A biflavonoid glycoside with a new carbon skeleton, named carinoside A, was isolated from the n-BuOH crude extract of the whole plant of Lomatogonium carinthiacum (Wulf) Reichb. The structure of the new compound was elucidated by using spectroscopic methods, including UV, IR, HR-ESI-MS and extensive 1D and 2D NMR techniques.
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