Bergenin

Bergenin
	Chemical structure of bergenin
	Chemical structure of bergenin in ball-and-stick format
Names
	Preferred IUPAC name (2R,3S,4S,4aR,10bS)-3,4,8,10-Tetrahydroxy-2-(hydroxymethyl)-9-methoxy-3,4,4a,10b-tetrahydropyrano[3,2-c][2]benzopyran-6(2H)-one
	Other names Cuscutin
Identifiers
CAS Number	477-90-7 (anhydrous) ; 5956-63-8 (unspecified hydrate) ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL273019 ;
ChemSpider	59455 ;
ECHA InfoCard	100.230.534
PubChem CID	66065;
UNII	L84RBE4IDC ;
CompTox Dashboard (EPA)	DTXSID4048141 ;
	InChI InChI=1S/C14H16O9/c1-21-11-5(16)2-4-7(9(11)18)12-13(23-14(4)20)10(19)8(17)6(3-15)22-12/h2,6,8,10,12-13,15-19H,3H2,1H3/t6-,8-,10+,12+,13-/m1/s1 Key: YWJXCIXBAKGUKZ-HJJNZUOJSA-N ;
	SMILES OC[C@@H](O1)[C@@H](O)[C@H](O)[C@@H]2[C@@H]1c3c(O)c(OC)c(O)cc3C(=O)O2;
Properties
Chemical formula	C14H16O9
Molar mass	328.27 g/mol
	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

Bergenin, alias cuscutin, is trihydroxybenzoic acid glycoside. It is the C-glycoside of 4-O-methyl gallic acid. It possesses an O-demethylated derivative called norbergenin. These are chemical compounds and drugs of Ayurveda, commonly known as Paashaanbhed. It shows a potent immunomodulatory effect.^[1]

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Bergenin can be isolated from Bergenia species like Bergenia ciliata and Bergenia ligulata,^[2] from rhizomes of Bergenia stracheyi. It is also found in the stem bark of Dryobalanops aromatica,^[3] in Ardisia elliptica and in Mallotus japonicus.^[4]

References