Syringetin

Syringetin is an O-methylated flavonol, a type of flavonoid. It is found in red grape (absent in white grape),^[1] in Lysimachia congestiflora^[2] and in Vaccinium uliginosum (bog bilberries).^[3] It is one of the phenolic compounds present in wine.^[4]

Syringetin

Names
IUPAC name 3,4′,5,7-Tetrahydroxy-3′,5′-dimethoxyflavone
Systematic IUPAC name 3,5,7-Trihydroxy-2-(4-hydroxy-3,5-dimethoxyphenyl)-4H-1-benzopyran-4-one
Other names 3′,5′-O-Dimethylmyricetin 3′,5′-Dimethoxy-3,5,7,4′-tetrahydroxyflavone 3,5,7,4′-Tetrahydroxy-3′,5′-dimethoxyflavone
Identifiers
CAS Number	4423-37-4 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:18215 N
ChEMBL	ChEMBL489142 N
ChemSpider	4445230 N
PubChem CID	5281953
UNII	J68JG79B9W Y
CompTox Dashboard (EPA)	DTXSID60196074
InChI InChI=1S/C17H14O8/c1-23-11-3-7(4-12(24-2)14(11)20)17-16(22)15(21)13-9(19)5-8(18)6-10(13)25-17/h3-6,18-20,22H,1-2H3 N Key: UZMAPBJVXOGOFT-UHFFFAOYSA-N N InChI=1/C17H14O8/c1-23-11-3-7(4-12(24-2)14(11)20)17-16(22)15(21)13-9(19)5-8(18)6-10(13)25-17/h3-6,18-20,22H,1-2H3 Key: UZMAPBJVXOGOFT-UHFFFAOYAJ
SMILES COc1cc(cc(OC)c1O)C=3Oc2cc(O)cc(O)c2C(=O)C=3O
Properties
Chemical formula	C17H14O8
Molar mass	346.291 g·mol−1
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

It induces human osteoblast differentiation through bone morphogenetic protein-2/extracellular signal-regulated kinase 1/2 pathway.^[4]

Metabolism

Syringetin is formed from laricitrin by the action of the enzyme laricitrin 5′-O-methyltransferase^[1][5] (myricetin O-methyltransferase).^[6]

Glycosides

• Syringetin-3-O-galactoside^[1][7]
• Syringetin-3-O-glucoside^[8][9]
• Syringetin 3-rhamnoside (CAS number 93126-00-2)
• Syringetin-3-O-rutinoside^[9] found in Larix sibirica^[10]
• Syringetin 3-O-(6′′-acetyl)-β-glucopyranoside found in Picea abies (Norway spruce)^[11]

References

1. Mattivi, Fulvio; Guzzon, Raffaele; Vrhovsek, Urska; Stefanini, Marco; Velasco, Riccardo (2006). "Metabolite profiling of grape: Flavonols and anthocyanins". Journal of Agricultural and Food Chemistry. 54 (20): 7692–7702. doi:10.1021/jf061538c. PMID 17002441. S2CID 21407928.
2. Guo, Jian; Yu, Dong-Lei; Xu, Lizhen; Zhu, Min; Yang, Shi-Lin (1998). "Flavonol glycosides from Lysimachia congestiflora". Phytochemistry. 48 (8): 1445–1447. Bibcode:1998PChem..48.1445G. doi:10.1016/s0031-9422(97)01025-x. S2CID 85252109.
3. Lätti, Anja K.; Jaakola, Laura; Riihinen, Kaisu R.; Kainulainen, Pirjo S. (2010). "Anthocyanin and flavonol variation in bog bilberries (Vaccinium uliginosum L.) in Finland". Journal of Agricultural and Food Chemistry. 58 (1): 427–433. doi:10.1021/jf903033m. PMID 20000402. S2CID 28304488.
4. Hsu, Ya-Ling; Liang, Hsin-Lin; Hung, Chih-Hsing; Kuo, Po-Lin (2009). "Syringetin, a flavonoid derivative in grape and wine, induces human osteoblast differentiation through bone morphogenetic protein-2/extracellular signal-regulated kinase 1/2 pathway". Molecular Nutrition & Food Research. 53 (11): 1452–1461. doi:10.1002/mnfr.200800483. PMID 19784998. S2CID 42240173.
5. "Laricitrin 5′-O-methyltransferase activity". AmiGO 2. Gene Ontology Consortium. 2009-02-28. Retrieved 2021-04-04.
6. Foerster, Hartmut (2006-11-03). "MetaCyc pathway: Syringetin biosynthesis". MetaCyc. SRI International. Retrieved 2021-04-04.
7. Matsuda, F.; Suzuki, M.; Sawada, Y. (2016-01-19). "Syringetin-3-O-galactoside; LC-ESI-QTOF; MS2; CE:Ramp 5-60 V; [M+H]+". MassBank. Retrieved 2021-04-04.
8. Tohge, T. (2016-01-19). "Syringetin-3-O-glucoside; LC-ESI-QTOF; MS". MassBank. Retrieved 2021-04-04.
9. Slimestad, Rune; Hostettmann, Kurt (1996). "Characterisation of phenolic constituents from juvenile and mature needles of Norway spruce by means of high performance liquid chromatography–mass spectrometry". Phytochemical Analysis. 7 (1): 42–48. doi:10.1002/(SICI)1099-1565(199601)7:1<42::AID-PCA282>3.0.CO;2-K. S2CID 95953333.
10. 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. doi:10.1007/BF00563605. S2CID 4819832.
11. Slimestad, Rune; Andersen, Øyvind M.; Francis, George W.; Marston, Andrew; Hostettmann, Kurt (1995). "Syringetin 3-O-(6′′-acetyl)-β-glucopyranoside and other flavonols from needles of Norway spruce, Picea abies". Phytochemistry. 40 (5): 1537–1542. doi:10.1016/0031-9422(95)00383-I. S2CID 84506810.