Synthesis of 3-Methoxy- and 3-(?-D-Glucopyranosyloxy)flavylium Ions. Influence of the flavylium substitution pattern on the reactivity of anthocyanins in aqueous solution
作者:Olivier Dangles、Hakima Elhajji
DOI:10.1002/hlca.19940770616
日期:1994.9.21
The synthesis of 3-glycosyloxylated flavylium ions (anthocyanins), in particular of callistephin (4), a natural anthocyanin, is described. The structural transformations in aqueous solution and molecular complexation with chlorogenic acid (7) and caffeine (8) of the synthesized pigments 3 and 4 are investigated and compared to those of the corresponding 3-methoxyflavylium ions 1 and 2 and to those
描述了3-糖基氧基化的黄酮离子(花青素),特别是天然花青素Callistephin(4)的合成。研究了合成颜料3和4在水溶液中的结构转变以及与绿原酸(7)和咖啡因(8)的分子络合,并将其与相应的3-甲氧基黄酮离子1和2以及卵磷脂(5)进行了比较。)和马尔文(6),两种非常常见的天然花青素。就糖基氧基残基在花色苷的化学性质中所起的作用进行了讨论。花色苷分子的络合(色素沉着)通过UV / VIS光谱和1 H-NMR进行定量研究。特别是,使用一般的理论处理方法来解释UV / VIS光谱数据,例如,可以证明无色形式的花色苷与8之间形成了分子配合物。