Myricetin 5,7,3′,4′,5′-pentamethyl ether and other methylated flavonoids from Murraya paniculata
作者:Takeshi Kinoshita、Kurnia Firman
DOI:10.1016/s0031-9422(96)00853-9
日期:1997.5
Abstract Seven flavonoids, including one new flavonol, were isolated from the leaves of Murraya paniculata (Rutaceae). Four were identified as previously known constituents of M. paniculata or allied species, namely, 5,7,3′,4′,5′-pentamethoxyflavone, 5,7,8,3′,4′,5′-hexamethoxyflavone, 3,5,7,3′,4′,5′-hexamethoxyflavone and 3,5,7,8,3′,4′,5′-heptamethoxyflavone. The structure of the new flavonol was elucidated
摘要 从芸香科(Murraya paniculata)的叶子中分离得到7种黄酮类化合物,其中一种新的黄酮醇。四种已被确定为 M. paniculata 或相关物种的先前已知成分,即 5,7,3',4',5'-五甲氧基黄酮,5,7,8,3',4',5'-六甲氧基黄酮,3 ,5,7,3',4',5'-六甲氧基黄酮和 3,5,7,8,3',4',5'-七甲氧基黄酮。基于光谱研究,新黄酮醇的结构被阐明为3-羟基-5,7,3',4',5'-五甲氧基黄酮。其他两种黄酮类化合物,甲基化黄烷酮及其相应的查耳酮异构体被鉴定为 2-(S)-5,7,3',4',5'-pentamethoxyflavanone 和 2'-hydroxy-3,4,5,4',分别为 6'-五甲氧基查尔酮。