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 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]
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).
^Münzenberger, Babette; Heilemann, Jürgen; Strack, Dieter; Kottke, Ingrid; Oberwinkler, Franz (1990). "Phenolics of mycorrhizas and non-mycorrhizal roots of Norway spruce". Planta. 182 (1): 142–8. doi:10.1007/BF00239996. PMID24197010. S2CID43504838.
^Lee, D; Cuendet, M; Vigo, JS; Graham, JG; Cabieses, F; Fong, HH; Pezzuto, JM; Kinghorn, AD (2001). "A novel cyclooxygenase-inhibitory stilbenolignan from the seeds of Aiphanes aculeata". Organic Letters. 3 (14): 2169–71. doi:10.1021/ol015985j. PMID11440571.
^Yao, Chun-Suo; Lin, Mao; Liu, Xin; Wang, Ying-Hong (2005). "Stilbene derivatives from Gnetum cleistostachyum". Journal of Asian Natural Products Research. 7 (2): 131–7. doi:10.1080/10286020310001625102. PMID15621615. S2CID37661785.
^Cunningham, Jill; Haslam, E.; Haworth, R. D. (1963). "535. The constitution of piceatannol". Journal of the Chemical Society (Resumed): 2875. doi:10.1039/JR9630002875.
^Swanson-Mungerson M, Ikeda M, Lev L, Longnecker R, Portis T (2003). "Identification of latent membrane protein 2A (LMP2A) specific targets for treatment and eradication of Epstein-Barr virus (EBV)-associated diseases". J. Antimicrob. Chemother. 52 (2): 152–4. doi:10.1093/jac/dkg306. PMID12837743.
^Matsumoto, Y.; Katano, Y. (2021). "Cardiovascular Protective Effects of Polyphenols Contained in Passion Fruit Seeds Namely Piceatannol and Scirpusin B: A Review". The Tokai Journal of Experimental and Clinical Medicine. 46 (3): 151–161. PMID34498252.
Further reading
Piotrowska, Hanna; Kucinska, Malgorzata; Murias, Marek (2012). "Biological activity of piceatannol: Leaving the shadow of resveratrol". Mutation Research/Reviews in Mutation Research (review). 750 (1): 60–82. doi:10.1016/j.mrrev.2011.11.001. ISSN1383-5742. PMID22108298.