Momilactone B

Momilactone B
Names
	IUPAC name (3S-(3α,3β,5aβ,8α,10aα,10bβ,10cβ))-8-Ethenyl-3a,5a,7,8,9,10,10a,10c-octahydro-3a,8-dimethyl-,4H-3,10b-ethano-1H,3H-benzo[f]furo[4,3,2-de]-2-benzopyran-4-one
Identifiers
CAS Number	51415-08-8 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL2271028;
ChemSpider	9755519;
PubChem CID	3084979;
CompTox Dashboard (EPA)	DTXSID30965734 ;
	InChI InChI=1S/C20H26O4/c1-4-17(2)6-5-13-12(10-17)9-14-15-18(3,16(21)24-14)20(22)8-7-19(13,15)11-23-20/h4,9,13-15,22H,1,5-8,10-11H2,2-3H3/t13-,14?,15+,17-,18+,19+,20?/m1/s1 Key: SONPFFIKLYCKOY-WXVXRDCTSA-N;
	SMILES C[C@]1(CC[C@@H]2C(=CC3[C@@H]4[C@]25CCC([C@@]4(C(=O)O3)C)(OC5)O)C1)C=C;
Properties
Chemical formula	C20H26O4
Molar mass	330.424 g·mol−1
Melting point	242 °C (468 °F; 515 K) (decomp)
	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

Momilactone B is an allelopathic agent produced from the roots of rice (Oryza sativa L.) (100 mg from 200 kg dry rice husk). It has been shown to be produced in high concentrations by the roots of rice seedlings. The production of momilactone B has also been induced in response to infection by blast fungus (Pyricularia oryzae) or irradiated with UV light. More recently it has been shown to be a potential chemotherapeutic agent against human colon cancer.