Wikipedia

Myrtillin

Myrtillin
Names
IUPAC name
(2S,3R,4S,5S,6R)-2-[5,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)chromenylium-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol chloride
Other names
  • Mirtillin
  • Myrtillin chloride
  • Delphinidin 3-glucoside
  • Delphinidol 3-glucoside
  • Delphinidin 3-O-glucoside
  • Delphinidin 3-monoglucoside
  • Delphinidine 3-monoglucoside
  • Delphinidin-3-glucoside chloride
  • Delphinidin 3-O-β-D-glucoside
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
KEGG
UNII
  • InChI=1S/C21H20O12/c22-6-15-17(28)18(29)19(30)21(33-15)32-14-5-9-10(24)3-8(23)4-13(9)31-20(14)7-1-11(25)16(27)12(26)2-7/h1-5,15,17-19,21-22,28-30H,6H2,(H4-,23,24,25,26,27)/p+1/t15-,17-,18+,19-,21-/m1/s1 ☒N
    Key: XENHPQQLDPAYIJ-PEVLUNPASA-O ☒N
  • C1=C(C=C(C(=C1O)O)O)C2=C(C=C3C(=CC(=CC3=[O+]2)O)O)OC4C(C(C(C(O4)CO)O)O)O.[Cl-]
Properties
C21H21ClO12
C21H21O12+, Cl−
Molar mass 500.83 g/mol (chloride)
465.38 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Myrtillin is an anthocyanin. It is the 3-glucoside of delphinidin. It can be found in all green plants, most abundantly in black beans, blackcurrant, blueberry, huckleberry, bilberry leaves[1][2] and in various myrtles, roselle plants, and Centella asiatica plant.[citation needed] It is also present in yeast and oatmeal.[citation needed] The sumac fruit's pericarp owes its dark red colour to anthocyanin pigments, of which chrysanthemin, myrtillin and delphinidin have yet been identified.[3][unreliable source?]

The various colors, such as red, mauve, purple, violet, and blue in Hydrangea macrophylla are developed from myrtillin complexes with metal ions called metalloanthocyanins.[4]

Metabolism

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The enzyme anthocyanin 3-O-glucoside 6''-O-hydroxycinnamoyltransferase produces delphinidin 3-(6-p-coumaroyl)glucoside from myrtillin and p-coumaroyl-CoA in the anthocyanin biosynthesis pathway.[5]

References

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  1. ^ Bilberry Leaf on florahealth.com Archived February 5, 2009, at the Wayback Machine
  2. ^ Yang W, Kortesniemi M, Ma X, Zheng J, Yang B (May 2019). "Enzymatic acylation of blackcurrant (Ribes nigrum) anthocyanins and evaluation of lipophilic properties and antioxidant capacity of derivatives". Food Chem. 281: 189–196. doi:10.1016/j.foodchem.2018.12.111. PMID 30658747.
  3. ^ Sumac on spicesworld.net
  4. ^ Yoshida K, Mori M, Kondo T (2009). "Blue flower color development by anthocyanins: from chemical structure to cell physiology". Nat. Prod. Rep. 26 (7): 884–915. doi:10.1039/b800165k. PMID 19554240.
  5. ^ "Delphinidin 3-(6-p-coumaroyl)glucoside synthesis reaction on www.kegg.jp". Kegg.jp. Retrieved 2013-04-09.