Microwave-Assisted Efficient Synthesis of Polymethoxyacetophenones and Natural Polymethoxyflavones, and Their Inhibitory Effects on Melanogenesis
作者:Masao Tsukayama、Eiji Kusunoki、Mohammad M. Hossain、Yasuhiko Kawamura、Shinji Hayashi
DOI:10.3987/com-07-11054
日期:——
Microwave-assisted Friedel-Crafts acetylation of polymethoxybenzenes with aceticanhydride in the presence of In(CF 3 SO 3 ) 3 under solvent-free conditions was achieved rapidly to give polymethoxyacetophenones in high yields. Microwave-assisted benzoylation of 2'-hydroxypolymethoxyacetophenones with polymethoxybenzoyl chlorides, followed by the rearrangement of the resulting benzoates and the final
在无溶剂条件下,在 In(CF 3 SO 3 ) 3 存在下,多甲氧基苯与乙酸酐的微波辅助傅-克乙酰化反应迅速,得到高产率的多甲氧基苯乙酮。2'-羟基聚甲氧基苯乙酮与聚甲氧基苯甲酰氯的微波辅助苯甲酰化反应,然后对所得苯甲酸酯进行重排,最终快速有效地形成天然聚甲氧基黄酮。多甲氧基黄酮对人黑色素瘤细胞中的黑色素生成具有抑制作用。
Imai, Fujio; Itoh, Kikuo; Kishibuchi, Noriko, Chemical and pharmaceutical bulletin, 1989, vol. 37, # 1, p. 119 - 123