Fustin

Fustin
Names
	IUPAC name (2R,3R)-3,3′,4′,7-Tetrahydroxyflavan-4-one
	Systematic IUPAC name (2R,3R)-2-(3,4-Dihydroxyphenyl)-3,7-dihydroxy-2,3-dihydro-4H-1-benzopyran-4-one
	Other names 2,3-Dihydrofisetin; 3,7,3',4'-Tetrahydroxyflavanone; 2,3-Dihydrofisetin; 3′,4′,7-Trihydroxyflavanol
Identifiers
CAS Number	20725-03-5 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:5202;
ChEMBL	ChEMBL470267;
ChemSpider	4476304;
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EC Number	243-989-6;
E number	Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value).
KEGG	C01378;
PubChem CID	5317435;
UNII	4994C1X19A ;
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	InChI InChI=1S/C15H12O6/c16-8-2-3-9-12(6-8)21-15(14(20)13(9)19)7-1-4-10(17)11(18)5-7/h1-6,14-18,20H/t14-,15+/m0/s1 Key: FNUPUYFWZXZMIE-LSDHHAIUSA-N;
	SMILES C1=CC(=C(C=C1[C@@H]2[C@H](C(=O)C3=C(O2)C=C(C=C3)O)O)O)O;
Properties
Chemical formula	C15H12O6
Molar mass	288.255 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Fustin, sometimes called "dihydrofisetin", is a flavanonol, a type of flavonoid. It can be found in young fustic (Cotinus coggygria)^[1] and in the lacquer tree (Toxicodendron vernicifluum).^[2]

Fustin shows protective effects on 6-hydroxydopamine-induced neuronal cell death.^[2]

Unlike fisetin, fustin has no double bond in the C-ring. This makes fustin a flavan, with two stereocenters and four stereoisomers.

References

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v t e Flavanonols and their glycosides
3-Hydroxyflavanones:	Ampelopsin (Dihydromyricetin) Aromadedrin (Dihydrokaempferol) Dihydrogossypetin Dihydromorin Fustin (Dihydrofisetin) Garbanzol Pinobanksin Taxifolin (Dihydroquercetin)
O-methylated flavanonols	Dihydrokaempferide
dihydroflavonol 3-O-glycosides	Lecontin (+)-fustin glucoside
Glycosides	Astilbin Chrysandroside A Chrysandroside B Engeletin Eucryphin Smitilbin (Isoastilbin B) Xeractinol
Acetylated glycosides	Phellamurin
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Names

IUPAC name (2R,3R)-3,3′,4′,7-Tetrahydroxyflavan-4-one
Systematic IUPAC name (2R,3R)-2-(3,4-Dihydroxyphenyl)-3,7-dihydroxy-2,3-dihydro-4H-1-benzopyran-4-one
Other names 2,3-Dihydrofisetin 3,7,3',4'-Tetrahydroxyflavanone 2,3-Dihydrofisetin 3′,4′,7-Trihydroxyflavanol
Identifiers
CAS Number	20725-03-5^Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:5202
ChEMBL	ChEMBL470267
ChemSpider	4476304
ECHA InfoCard	Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value). Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value).Lua error in Module:EditAtWikidata at line 29: attempt to index field 'wikibase' (a nil value).
EC Number	243-989-6
E number	Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value).
KEGG	C01378
PubChem CID	5317435
UNII	4994C1X19A^Y
CompTox Dashboard (EPA)	{{#property:P3117}}Lua error in Module:EditAtWikidata at line 29: attempt to index field 'wikibase' (a nil value).
InChI InChI=1S/C15H12O6/c16-8-2-3-9-12(6-8)21-15(14(20)13(9)19)7-1-4-10(17)11(18)5-7/h1-6,14-18,20H/t14-,15+/m0/s1 Key: FNUPUYFWZXZMIE-LSDHHAIUSA-N
SMILES C1=CC(=C(C=C1[C@@H]2[C@H](C(=O)C3=C(O2)C=C(C=C3)O)O)O)O
Properties
Chemical formula	C₁₅H₁₂O₆
Molar mass	288.255 g·mol⁻¹
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is ^YN ?) Infobox references