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Names | |
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Preferred IUPAC name 4-[(E)-2-(3,5-Dihydroxyphenyl)ethen-1-yl]benzene-1,2-diol | |
Other names 3',4',3,5-Tetrahydroxy-trans-stilbene Astringinin | |
Identifiers | |
3D model (JSmol) | |
ChEBI | |
ChemSpider | |
ECHA InfoCard | 100.115.063 |
PubChem CID | |
UNII | |
CompTox Dashboard (EPA) | |
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Properties | |
C14H12O4 | |
Molar mass | 244.246 g·mol−1 |
Appearance | white solid |
Melting point | 215–217 °C (419–423 °F; 488–490 K) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Piceatannol is the organic compound with the formula ((HO)2C6H3)2CH)2. Classified as a stilbenoid and a phenol, it is a white solid, although samples often are yellow owing to impurities.
Piceatannol and its glucoside, astringin, are found in mycorrhizal and non-mycorrhizal roots of Norway spruces (Picea abies). [1] It can also be found in the seeds of the palm Aiphanes horrida [2] and in Gnetum cleistostachyum . [3] The chemical structure of piceatannol was established by Cunningham et al. as being an analog of resveratrol. [4]
Piceatannol is a metabolite of resveratrol found in red wine, grapes, passion fruit, white tea, and Japanese knotweed. [5] Astringin, a piceatannol glucoside, is also found in red wine. The formation of piceatannol from resveratrol is catalyzed by cytochrome P450. [6]
Piceattanol acts as an inhibitor of the tyrosine kinase Syk and some related tyrosine kinases. [7] In the early 2000s, this prompted research interest in piceatannol and its effect on immune or inflammatory diseases. [8]
Injected in rats, piceatannol shows a rapid glucuronidation and a poor bioavailability, according to a 2006 study. [9]
Piceatannol affect gene expressions, gene functions and insulin action, resulting in the delay or complete inhibition of adipogenesis. [10] [11]
Passion fruit seeds are rich in piceatannol and scirpusin B (dimer of piceatannol) as polyphenols, both of which have been reported to have vasodilating effects in the thoracic aorta and coronary artery of rats. [12] Furthermore, these polyphenols did not increase heart rate (i.e., these polyphenols did not increase oxygen consumption).
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