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| Names | |
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| Preferred IUPAC name 3,4,5-Trihydroxy-2-benzopyranobenzopyran-2-yl)oxy]benzoate | |
| Other names
Valoneic acid bislactone Valoneic acid bilactone | |
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| Properties | |
| Chemical formula | C21H10O13 |
| Molar mass | 470.28 g/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa).
 N verify (what is ?)
Infobox references
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Valoneic acid dilactone is a hydrolysable tannin that can be isolated from the heartwood of Shorea laevifolia and in oaks species like the North American white oak (Quercus alba) and European red oak (Quercus robur).
It shows an inhibitory effect on 5α-reductase, an enzyme involved in steroids metabolism and prostate cancer.
References
- ^ 5A-Reductase inhibitory tannin-related compounds isolated from Shorea laevifolia. Yoshio Hirano, Ryuichiro Kondo and Kokki Sakai, Journal of wood science, Volume 49, Number 4, pp.339-343,doi:10.1007/s10086-002-0481-y
- Analysis of oak tannins by liquid chromatography-electrospray ionisation mass spectrometry. Pirjo Mämmelä, Heikki Savolainenb, Lasse Lindroosa, Juhani Kangasd and Terttu Vartiainen, Journal of Chromatography A, Volume 891, Issue 1, 1 September 2000, Pages 75-83, doi:10.1016/S0021-9673(00)00624-5
External links
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