Valoneic acid dilactone
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Preferred IUPAC name 3,4,5-Trihydroxy-2-[(3,7,8-trihydroxy-5,10-dioxo-5,10-dihydro[1]benzopyrano[5,4,3-cde][1]benzopyran-2-yl)oxy]benzoate | |
Other names Valoneic acid bislactone Valoneic acid bilactone | |
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InChI
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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 [77 °F], 100 kPa). N verify (what is YN ?) Infobox references |
Chemical compound
Valoneic acid dilactone is a hydrolysable tannin that can be isolated from the heartwood of Shorea laevifolia[1] and in oaks species like the North American white oak (Quercus alba) and European red oak (Quercus robur).[2]
It shows an inhibitory effect on 5α-reductase,[1] an enzyme involved in steroids metabolism and prostate cancer.
References
- ^ a b 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
- Valoneic acid dilactone at Phenol-Explorer.eu
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Types of ellagitannins
- Diphenolic acid : Hexahydroxydiphenic acid (HHDP)
- Triphenolic acids : Nonahydroxytriphenic acid
- Sanguisorbic acid
- Valoneic acid
- Tetraphenolic acids : Isoterchebulic acid
- Terchebulinic acid
- Ellagic acid
- Gallagic acid
- Gallagic acid dilactone
- Luteic acid
- Sanguisorbic acid dilactone
- Valoneic acid dilactone
- Acetonyl geraniin
- Alnusiin
- Bicornin
- Carlesiin
- Casuarictin
- Emblicanin A and B
- Euscaphinin
- Galloyl pedunculagin
- Grandinin
- Helioscopinin B
- Jolkinin
- Lagerstannin A, B and C
- Macranganin
- Myrobalanitannin
- Nupharin A, B, C, D, E and F
- Pedunculagin
- Punicalagin
- Punigluconin
- Phyllanemblinin A, B, C, D, E and F
- Punicalin
- Roburin E
- Rugosin E
- Sanguiin H-5
- Stenophyllanin A, B and C
- Strictinin
- Tellimagrandin I and II
- Teracatain
- Terchebulin
- Terflavin A and B
- Tergallic acid
- Tergallic acid dilactone
C-glycosidic ellagitannins |
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Dehydroellagitannins (molecules with dehydrohexahydroxydiphenic acid (DHHDP) |
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Transformed ellagitannins |
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- Dimers
- Agrimoniin
- Cornusiin E (dimer of tellimagrandin II)
- Lambertianin A and B
- Nobotanin B
- Roburin A, B, C and D
- Sanguiin H-6
- Trimers
- Lambertianin C
- Raspberry ellagitannin
- Tetramers
- Lambertianin D
- Nobotanin S
- Pentamer
- Melastoflorin A
- Flavono-ellagitannins (hybrid type)
- Urolithins (metabolites)
- Pomegranate ellagitannins
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