Hesperetin

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Hesperetin
Hesperetin
Names
IUPAC name
(S)-2,3-Dihydro-5,7-dihydroxy-2-(3-hydroxy-4-methoxyphenyl)-4H-1-benzopyran-4-one
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
DrugBank
ECHA InfoCard 100.007.538
EC Number 208-290-2
KEGG
UNII
Properties
C16H14O6
Molar mass 302.28 g·mol−1
Melting point 226–228 °C (439–442 °F; 499–501 K)
Solubility in other solvents Sol. EtOH, alkalis
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Hesperetin is the 4'-methoxy derivative of eriodictyol, a flavanone. Hesperetin's 7-O-glycoside, hesperidin, is a naturally occurring flavanon-glycoside, the main flavonoid in lemons and sweet oranges.[1] Hesperetin (and naringenin, the parent flavanone of naringin) are not found to a significant extent in Citrus spp.[2]

Glycosides[edit]

A variety of glycosides of hesperetin are known, including:

  • Hesperidin (hesperetin-7-O-rutinoside) is a water-insoluble flavonoid glycoside whose solubility is below 5 μg/ml in water.[3] Hesperidin is found in citrus fruits and upon ingestion it releases its aglycone, hesperetin.
  • Neohesperidin is the 7-O-neohesperidoside of hesperetin.
  • Hesperetin-7-O-α-L-Rhamnopyranoside (CAS 66513-83-5) is found in the roots of clammy cherry [4] (Cordia obliqua a.k.a. Cordia obliqua var. wallichii[5]).

Metabolism[edit]

Hesperidin 6-O-α-L-rhamnosyl-β-D-glucosidase is an enzyme that uses hesperidin and H2O to produce hesperetin and rutinose. It is found in the hyphomycetes species Stilbella fimetaria.

References[edit]