Synthetic studies on the flavone derivatives. XIII. Synthesis of flavones with tetramethoxyl groups in ring B.
作者:MUNEKAZU IINUMA、TOSHIYUKI TANAKA、SHIN MATSUURA
DOI:10.1248/cpb.32.3354
日期:——
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.
合成了2', 3', 4', 5, 5', 6, 7, 8-八甲氧基-(Ia)和2', 3', 4', 5, 5', 6, 7-七甲氧基黄酮(IIa)及其位置异构体,并用四甲氧基基团取代环B,以确认从Ageratum houstonianum分离出的agehoustin A和agehoustin B的结构。通过光谱方法研究了合成黄酮的特征。