Laricitrin is an O-methylated flavonol, a type of flavonoid. It is found in red grape (absent in white grape)[1] and in Vaccinium uliginosum (bog bilberries).[2] It is one of the phenolic compounds present in wine.[3]
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| Names | |
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| IUPAC name
3,3′,4′,5,7-Pentahydroxy-5′-methoxyflavone
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| Systematic IUPAC name
2-(3,4-Dihydroxy-5-methoxyphenyl)-3,5,7-trihydroxy-4H-1-benzopyran-4-one | |
| Other names
3'-O-Methylmyricetin
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| Identifiers | |
3D model (JSmol)
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| ChEBI | |
| ChemSpider | |
| KEGG | |
PubChem CID
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| UNII | |
CompTox Dashboard (EPA)
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| Properties | |
| C16H12O8 | |
| Molar mass | 332.264 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Metabolism
editLaricitrin is formed from myricetin by the action of the enzyme myricetin O-methyltransferase.[4] It is further methylated by laricitrin 5'-O-methyltransferase into syringetin.
Glycosides
edit- Laricitrin 3-O-galactoside, found in grape[1]
- Laricitrin 3-glucoside found in Larix sibirica[5]
- Laricitrin 3,5’-di-O-β-glucopyranoside, found in Medicago littoralis[6]
References
edit- ^ a b Mattivi, F; Guzzon, R; Vrhovsek, U; Stefanini, M; Velasco, R (October 2006). "Metabolite profiling of grape: Flavonols and anthocyanins". J. Agric. Food Chem. 54 (20): 7692–702. Bibcode:2006JAFC...54.7692M. doi:10.1021/jf061538c. PMID 17002441.
- ^ Anja; Jaakola, Laura; Riihinen, Kaisu R.; Kainulainen, Pirjo S. (2010). "Anthocyanin and Flavonol Variation in Bog Bilberries (Vaccinium uliginosumL.) in Finland". Journal of Agricultural and Food Chemistry. 58 (1): 427–433. Bibcode:2010JAFC...58..427L. doi:10.1021/jf903033m. PMID 20000402.
- ^ Castillo-Munoz, Noelia; Gomez-Alonso, Sergio; Garcia-Romero, Esteban; Hermosin-Gutierrez, Isidro (2007). "Flavonol profiles of Vitis vinifera red grapes and their single-cultivar wines". Journal of Agricultural and Food Chemistry. 55 (3): 992–1002. Bibcode:2007JAFC...55..992C. doi:10.1021/jf062800k. PMID 17263504.
- ^ Syringetin biosynthesis pathway on metacyc.org
- ^ Tyukavkina, N. A.; Medvedeva, S. A.; Ivanova, S. Z. (1974). "New flavonol glycosides from the needles of Larix sibirica". Chemistry of Natural Compounds. 10 (2): 170–172. Bibcode:1974CNatC..10..170T. doi:10.1007/BF00563605.
- ^ Flavonoids isolated from Medicago littoralis Rhode (Fabaceae): their ecological and chemosystematic significance Archived 2011-07-22 at the Wayback Machine