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Molecules 2008, 13(2), 444-451; doi:10.3390/molecules13020444
Article

The First Guaian-12-oic Acid Glucopyranosyl Ester and Other Constituents from Picris rhagadioloides (L.) Desf. (Asteraceae)

 and *
Department of Phytochemistry, Institute of Pharmacology, Polish Academy of Sciences, Pl-31-343 Krakow, Poland
* Author to whom correspondence should be addressed.
Received: 8 February 2008 / Revised: 15 February 2008 / Accepted: 15 February 2008 / Published: 19 February 2008
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Abstract

The first guaian-12-oic acid glucopyranosyl ester was isolated from the roots ofPicris rhagadioloides (L.) Desf. (Asteraceae), in addition to five costuslactone-typeguaianolides, four germacranolides and three phenolic compounds. This is the first timethat the known phenolics syringaldehyde and syringaresinol, as well as the knownsesquiterpene lactones glucozaluzanin C, cichorioside C and hypochoeroside A have beendescribed from a Picris species. The compounds were characterized on the basis ofphysicochemical, 1D- and 2D-NMR spectroscopic, and mass spectrometric data.
Keywords: Sesquiterpenoids; phenolics; Picris rhagadioloides; Asteraceae; spectroscopic analysis Sesquiterpenoids; phenolics; Picris rhagadioloides; Asteraceae; spectroscopic analysis
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Michalska, K.; Kisiel, W. The First Guaian-12-oic Acid Glucopyranosyl Ester and Other Constituents from Picris rhagadioloides (L.) Desf. (Asteraceae). Molecules 2008, 13, 444-451.

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