Luteic acid

Luteic acid
	Luteic acid
Names
	IUPAC name 3,4,8,9,10-pentahydroxy-6-oxobenzo[c]chromene-1-carboxylic acid
	Other names Luteolic acid
Identifiers
CAS Number	476-67-5
ChemSpider	4477499
Jmol 3D model	Interactive image
PubChem	5319108
	InChI InChI=1S/C14H8O9/c15-5-2-4-7(11(19)9(5)17)8-3(13(20)21)1-6(16)10(18)12(8)23-14(4)22/h1-2,15-19H,(H,20,21) Key: FLZGFQFYDGHWLR-UHFFFAOYSA-N ; InChI=1/C14H8O9/c15-5-2-4-7(11(19)9(5)17)8-3(13(20)21)1-6(16)10(18)12(8)23-14(4)22/h1-2,15-19H,(H,20,21) Key: FLZGFQFYDGHWLR-UHFFFAOYAI ;
	SMILES C1=C2C(=C(C(=C1O)O)O)C3=C(C(=C(C=C3C(=O)O)O)O)OC2=O ;
Properties
Chemical formula	C14H8O9
Molar mass	320.21 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

Luteic acid is a natural phenol found in numerous fruits. It is a monolactonized tergalloyl group. Maximilian Nierenstein showed in 1945 that luteic acid was a molecule present in the myrobalanitannin, a tannin found in the fruit of Terminalia chebula and is an intermediary compound in the synthesis of ellagic acid.^[1] It can form from hexahydroxydiphenic acid. It is also present in the structure of the tannins alnusiin and bicornin.^[2]

References

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↑ Structures of alnusiin and bicornin, new hydrolyzable tannins having a monolactonized tergalloyl group. Yoshida T, Yazaki K, Memon M.U, Maruyama I, Kurokawa K, Shingu T and Okuda T, Chemical and pharmaceutical bulletin, 1989, volume 37, number 10, pages 2655-2660, INIST:19467830 (abstract)

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