Glyceollin I

Glyceollin I
Names
	Preferred IUPAC name (6aS,11aS)-2,2-Dimethyl-2H,6H-[1]benzofuro[3,2-c]pyrano[2,3-h][1]benzopyran-6a,9(11aH)-diol
	Other names (−)-Glyceollin I
Identifiers
CAS Number	57103-57-8 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:16470 ;
ChemSpider	142931 ;
ECHA InfoCard	100.222.666
KEGG	C01701 ;
PubChem CID	162807;
UNII	6461TV6UCH ;
CompTox Dashboard (EPA)	DTXSID10205726 ;
	InChI InChI=1S/C20H18O5/c1-19(2)8-7-12-15(25-19)6-4-13-17(12)23-10-20(22)14-5-3-11(21)9-16(14)24-18(13)20/h3-9,18,21-22H,10H2,1-2H3/t18-,20+/m0/s1 Key: YIFYYPKWOQSCRI-AZUAARDMSA-N ; InChI=1/C20H18O5/c1-19(2)8-7-12-15(25-19)6-4-13-17(12)23-10-20(22)14-5-3-11(21)9-16(14)24-18(13)20/h3-9,18,21-22H,10H2,1-2H3/t18-,20+/m0/s1 Key: YIFYYPKWOQSCRI-AZUAARDMBS;
	SMILES CC1(C=Cc2c(ccc3c2OC[C@@]4([C@H]3Oc5c4ccc(c5)O)O)O1)C;
Properties
Chemical formula	C20H18O5
Molar mass	338 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

Glyceollin I is a glyceollin, a type of prenylated pterocarpan. It is a phytoalexin found in the soybean.

Glyceollin synthase is an enzyme responsible for the production of glyceollin. The five substrates of this enzyme are 2-dimethylallyl-(6aS,11aS)-3,6a,9-trihydroxypterocarpan, 4-dimethylallyl-(6aS,11aS)-3,6a,9-trihydroxypterocarpan, NADPH, H⁺, and O₂, whereas its three products are glyceollin, NADP⁺, and H₂O.

In in vitro studies, this molecule has been shown to exhibit antiestrogenic properties.