Preparative Monohydroxyflavanone Syntheses and a Protocol for Gas Chromatography-Mass Spectrometry Analysis of Monohydroxyflavanones
作者:Hitoshi Kagawa、Asako Shigematsu、Shigeru Ohta、Yoshihiro Harigaya
DOI:10.1248/cpb.53.547
日期:——
single hydroxyl can be selectively added to a flavanone A- or B-ring at any position. We are also the first to develop a procedure that separates the seven isomers by GC and characterizes the mass spectra of the isomers. Both the synthetic method and the GC-MS conditions may become important tools during future flavanone metabolism and oxidation studies.
我们描述了一种简便有效的制备方法,用于合成单羟基黄酮。使用该方案,每个合成在黄烷酮A环或B环的一个碳原子上区域选择性地引入羟基。七个可能的异构体分别由相应的单甲氧基甲氧基化2'-羟基查耳酮在酸性溶液中合成。使用包含DB-5毛细管柱的气相色谱-质谱(GC-MS)系统对这些单羟基黄酮进行了表征。我们的报道是制备合成方法的首次报道,在该合成方法中,可以在任何位置将单一羟基选择性地添加至黄烷酮A环或B环中。我们也是第一个开发通过GC分离7种异构体并表征这些异构体质谱的方法的公司。