Petunidin

Petunidin
Names

IUPAC name 3,3′,4′,5,7-Pentahydroxy-5′-methoxyflavylium
Systematic IUPAC name 2-(3,4-Dihydroxy-5-methoxyphenyl)-3,5,7-trihydroxy-1λ⁴-benzopyran-1-ylium
Other names Petunidine; Petunidin chloride; Petunidol; Myrtillidin
Identifiers
CAS Number	1429-30-7^Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:75318^N
ChemSpider	390371^Y
ECHA InfoCard	100.014.409
KEGG	C08727^Y
PubChem CID	441774
UNII	WRK4Q8K2D8^Y
CompTox Dashboard (EPA)	DTXSID90931677
InChI InChI=1S/C16H12O7/c1-22-14-3-7(2-11(19)15(14)21)16-12(20)6-9-10(18)4-8(17)5-13(9)23-16/h2-6H,1H3,(H4-,17,18,19,20,21)/p+1^Y Key: AFOLOMGWVXKIQL-UHFFFAOYSA-O^Y InChI=1/C16H12O7/c1-22-14-3-7(2-11(19)15(14)21)16-12(20)6-9-10(18)4-8(17)5-13(9)23-16/h2-6H,1H3,(H4-,17,18,19,20,21)/p+1 Key: AFOLOMGWVXKIQL-IKLDFBCSAS
SMILES Oc1cc2c(O)cc(O)cc2[o+]c1c3cc(O)c(O)c(OC)c3
Properties
Chemical formula	C₁₆H₁₃O₇⁺ (Cl⁻)
Molar mass	317.27 g/mol
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

Chemical compound

Petunidin (Pt), like Europinidin and Malvidin, is derived from Delphinidin and is an O-methylated anthocyanidin of the 3-hydroxy type. It is a natural organic compound, a dark-red or purple water-soluble pigment found in many red berries including chokeberries (Aronia sp), Saskatoon berries (Amelanchier alnifolia) or different species of grape (for instance Vitis vinifera, or muscadine, Vitis rotundifolia), and also part of the pigments responsible for the petal colors in many flowers. This pigment gives the Indigo Rose tomatoes the majority of their deep purple color when the fruits are exposed to sunlight.^[1] The name of the molecule itself is derived from the word Petunia.

Biosynthesis

Petunidin could form in the exocarp of fruits from delphinidin, with an anthocyanin flavonoid O-methyltransferase (Catechol-O-methyl transferase) catalyzing the B-ring methylation and S-Adenosyl-L-methyl-3H methionine being the methyl group donor.

Glycosides

Glycoside forms of petunidin are present in grape.^[2] These include :

Petunidin-3-O-glucoside
Petunidin-3-O-(6-p-coumaroyl) glucoside
Petunidin-3-O-(6-p-acetyl) glucoside
Petunidin-3-O-galactoside
Petunidin-3-rutinoside

The bark of Commiphora angolensis contains petunidin-3-rhamnoglucoside.^[3]

Uses

Petunidin is referred as E165f, E163 and following numbers corresponding to anthocyanins in the food coloring E number list.

References

^ "The Purple Tomato FAQ". 2 May 2012.
^ "Food-Info.net : Anthocyanins and anthocyanidins".
^ Chemical study of bark from Commiphora angolensis Engl. Cardoso Do Vale, J., Bol Escola Farm Univ Coimbra Edicao Cient, 1962, volume 3, page 128 (abstract)

Anthocyanidins and their anthocyanin glucosides

3-Hydroxyanthocyanidins

3-Deoxyanthocyanidins

O-Methylated anthocyanidins

5-Desoxy-malvidin
Capensinidin
Europinidin
Hirsutidin
Kaempferidinidin
Malvidin
Peonidin
Petunidin
Pulchellidin
Rosinidin

Anthocyanins
(anthocyaninidin glycosides)

Glucosides:

Callistephin (Pelargonidin 3-O-glucoside)
Chrysanthemin (Cyanidin 3-O-glucoside)
Myrtillin (Delphinidin 3-O-glucoside)
Oenin (Malvidin 3-O-glucoside)
Peonidin 3-O-glucoside
Petunidin 3-O-glucoside
Pulchellidin 3-glucoside

Diglucosides:

Cyanin (Cyanidin 3,5-O-diglucoside)
Delphin (Delphinidin 3,5-O-diglucoside)
Malvin (Malvidin 3,5-diglucoside)
Pelargonin (Pelargonidin 3,5-O-diglucoside)
Peonin (Peonidin 3,5-O-diglucoside)
Petunin (Petunidin 3,5-O-diglucoside)

Others glycosides:

Antirrhinin (Cyanidin 3-O-rutinoside)
Ideain (Cyanidin 3-O-galactoside)
Delphinidin 3-O-rhamnoside
Petunidin 3-O-arabinoside
Petunidin 3-O-galactoside
Petunidin 3-O-rhamnoside
Petunidin 3-O-rutinoside
Primulin (Malvidin 3-O-galactoside)
Pulchellidin 3-rhamnoside
Tulipanin (Delphinidin 3-O-rutinoside)

Acylated anthocyanins

Acetylated anthocyanins	Cyanidin 3-O-(6-acetyl)glucoside Delphinidin 3-O-(6-acetyl)glucoside Malvidin 3-O-(6-acetyl)glucoside Petunidin 3-O-(6-acetyl)galactoside Petunidin 3-O-(6-acetyl)glucoside Peonidin 3-O-(6-acetyl)glucoside
Coumaroylated anthocyanins (cis- and trans-)	Cyanidin 3-O-(6-p-coumaroyl)glucoside Delphinidin 3-O-(6-p-coumaroyl)glucoside Malvidin 3-O-(6-p-coumaroyl)glucoside Petunidin 3-O-(6-p-coumaroyl)glucoside Peonidin 3-O-(6-p-coumaroyl)glucoside
Caffeoylated anthocyanins	Malvidin 3-O-(6-p-caffeoyl)glucoside Peonidin 3-O-(6-p-caffeoyl)glucoside
Malonylated anthocyanins	Malonylmalvin (malvidin 3-(6″-malonylglucoside)-5-glucoside)
Acylated anthocyanin diglycosides	Cyanidin 3-O-(di-p-coumarylglucoside)-5-glucoside Gentiodelphin (delphinidin 3-''O''-glucosyl-5-''O''-(6-''O''-caffeoyl-glucosyl)-3′-''O''-(6-''O''-caffeoyl-glucoside)) Nasunin (Delphinidin 3-(p-coumaroylrutinoside)-5-glucoside) Petanin (petunidin 3-[6-O-(4-O-(E)-p-coumaroyl-O-α-l-rhamnopyranosyl)-β-D-glucopyranoside]-5-O-β-D-glucopyranoside) Violdelphin (Delphinidin 3-rutinoside-7-O-(6-O-(4-(6-O-(4-hydroxybenzoyl)-β-D-glucosyl)oxybenzoyl)-β-D-glucoside)