55162-39-5Relevant articles and documents
FURTHER POLYSUBSTITUTED FLAVONES FROM AGERATUM HOUSTONIANUM
Quijano, Leovigildo,Calderon, Jose S.,Garibay, Frederico Gomez,Escobar, Edgar,Rios, Tirso
, p. 2075 - 2078 (2007/10/02)
The aerial parts of Ageratum houstonianum afforded three new flavones, 5-hydroxy-6,7,8,2',4',5'-hexamethoxyflavone; 5,2'-dihydroxy-6,7,8,4',5'-pentamethoxyflavone and 5-hydroxy-6,7,2',4',5'-pentamethoxyflavone.The known 5,6,7,3',4',5'-hexamethoxyflavone was also isolated.Structural determinations involved spectral methods and chemical degradations. - Key Word Index: Ageratum houstonianum; Asteraceae; Eupatorieae; heptasubstituted and hexasubstituted flavones; structure determination.