Bergenin

Bergenin

Names
IUPAC name (2R,3S,4S,4aR,10bS)-3,4,8,10-tetrahydroxy-2-(hydroxymethyl)-9-methoxy-3, 4,4a,10b-tetrahydro-2H-pyrano[3,2-c]isochromen-6-one
Other names Cuscutin
Identifiers
CAS Number	477-90-7 (anhydrous) N= 5956-63-8 (unspecified hydrate) Y
3D model (JSmol)	Interactive image
ChemSpider	59455 Y
ECHA InfoCard	100.230.534
PubChem CID	66065
UNII	L84RBE4IDC Y
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 Y Key: YWJXCIXBAKGUKZ-HJJNZUOJSA-N Y
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).
N  (what is YN ?)
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.

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