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Title: Miquelianin  
Author: World Heritage Encyclopedia
Language: English
Subject: Kaempferol 7-O-glucoside, Rhamnetin, Kaempferol, Nelumbo nucifera
Publisher: World Heritage Encyclopedia


Chemical structure of miquelianin
CAS number
Jmol-3D images Image 1
Molecular formula C21H18O13
Molar mass 478.36 g mol−1
Density 1.961 g/mL
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)

Miquelianin (quercetin 3-O-glucuronide) is a flavonol glucuronide, a type of phenolic compound present in wine,[1] in species of St John's wort,[2] like Hypericum hirsutum,[3] in Nelumbo nucifera (Indian lotus)[4] or in green beans.[5]

It is also a rat plasma quercetin metabolite.[6] It shows an antioxidant effect in human plasma.[7] In vitro studies indicate that miquelianin is able to reach the central nervous system from the small intestine.[8]

See also


  1. ^ Ghiselli, A.; Nardini, M.; Baldi, A.; Scaccini, C. (1998). "Antioxidant Activity of Different Phenolic Fractions Separated from an Italian Red Wine". Journal of Agricultural and Food Chemistry 46 (2): 361–367.  
  2. ^ Wei, Y.; Xie, Q.; Dong, W.; Ito, Y. (2009). "Separation of epigallocatechin and flavonoids from Hypericum perforatum L. By high-speed counter-current chromatography and preparative high-performance liquid chromatography". Journal of Chromatography A 1216 (19): 4313–4318.  
  3. ^ Kitanov, G. M. (1988). "Miquelianin and other polyphenols from Hypericum hirsutum". Chemistry of Natural Compounds 24: 119–120.  
  4. ^ Kashiwada, Y.; Aoshima, A.; Ikeshiro, Y.; Chen, Y. P.; Furukawa, H.; Itoigawa, M.; Fujioka, T.; Mihashi, K.; Cosentino, L. M.; Morris-Natschke, S. L.; Lee, K. H. (2005). "Anti-HIV benzylisoquinoline alkaloids and flavonoids from the leaves of Nelumbo nucifera, and structure–activity correlations with related alkaloids". Bioorganic & Medicinal Chemistry 13 (2): 443–448.  
  5. ^ Plumb, G. W.; Price, K. R.; Williamson, G. (1999). "Antioxidant properties of flavonol glycosides from green beans". Redox Report 4 (3): 123–127.  
  6. ^ Moon, J. H.; Tsushida, T.; Nakahara, K.; Terao, J. (2001). "Identification of quercetin 3-O-β-D-glucuronide as an antioxidative metabolite in rat plasma after oral administration of quercetin". Free Radical Biology and Medicine 30 (11): 1274–1285.  
  7. ^ Terao, J.; Yamaguchi, S.; Shirai, M.; Miyoshi, M.; Moon, J. H.; Oshima, S.; Inakuma, T.; Tsushida, T.; Kato, Y. (2001). "Protection by quercetin and quercetin 3-O-β-D-glucuronide of peroxynitrite-induced antioxidant consumption in human plasma low-density lipoprotein". Free Radical Research 35 (6): 925–931.  
  8. ^ Juergenliemk, G.; Boje, K.; Huewel, S.; Lohmann, C.; Galla, H. J.; Nahrstedt, A. (2003). "In VitroStudies Indicate that Miquelianin (Quercetin 3-O-ß-D-Glucuronopyranoside) is Able to Reach the CNS from the Small Intestine". Planta Medica 69 (11): 1013–1017.  
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