87402-96-8Relevant academic research and scientific papers
Syntheses of Agehoustins-A and B
Bhardwaj, D. K.,Chand, Gyan,Jain, Anita,Srivastava, Nagesh,Sharma, A. K.
, p. 1163 - 1164 (2007/10/02)
Agehoustins-A and B formulated as 5,6,7,8,2',3',4',5'-octamethoxyflavone (I) and 5,6,7,2',3',4',5'-heptamethoxyflavone (II) respectively, have been synthesised by the cyclodehydrogenations of the corresponding 2'-hydroxy-3',4',5',6',2,3,4,5-octamethoxychalkone (III) and 2'-hydroxy-4',5',6',2,3,4,5-heptamethoxychalkone (IV).
OCTASUBSTITUTED FLAVONES FROM AGERATUM HOUSTONIANUM
Quijano, Leovigildo,Calderon, Jose S.,Gomez, G., Federico,Escobar, Edgar,Rios, Tirso
, p. 1085 - 1088 (2007/10/02)
Ageratum houstonianum; Asteraceae; Eupatorieae; octasubstituted flavones; 3'-hydroxy-5,6,7,8,2',4',5'-heptamethoxyflavone; 5,3'-dihydroxy-6,7,8,2',4',5'-hexamethoxyflavone.Two new highly oxygenated flavones, were isolated from aerial parts of Ageratum houstonianum.Their structures were established as 3'-hydroxy-5,6,7,8,2',4',5'-heptamethoxyflavone and 5,3'-dihydroxy-6,7,8,2',4',5'-hexamethoxyflavone on the basis of spectral data and chemical degradation.The structure of the latter compound was confirmed by X-ray analysis.
Synthetic studies on the flavone derivatives. XIII. Synthesis of flavones with tetramethoxyl groups in ring B
Iinuma,Tanaka,Matsuura
, p. 3354 - 3360 (2007/10/02)
2',3',4',5,5',6,7,8-Octamethoxy- (Ia) and 2',3',4',5,5',6,7-heptamethoxyflavone (IIa) and their position isomers substituted with tetramethoxyl groups in ring B were synthesized to confirm the structures of agehoustin A and agehoustin B isolated from Ageratum houstonianum. The characteristics of the synthesized flavones were investigated by spectroscopic methods.
