Unusual anthocyanin reaction with acetone leading to pyranoanthocyanin formation
作者:Yinrong Lu、L.Yeap Foo
DOI:10.1016/s0040-4039(00)02246-2
日期:2001.2
Anthocyanins undergo unusual facile reactions with acetone to give rise to pyranoanthocyanins, thus showing that the new class of pigments isolated from blackcurrant seeds were a result of solvent participation. This oxidative addition was extended to the successful synthesis of pyranomalvidin or 2-(3,5-dimethoxy-4-hydroxyphenyl)-8-hydroxy-5-methyl-3-O-β-d-glucopyranosyloxypyrano[4,3,2-de]-1-benzopyrylium
花色素苷与丙酮发生异常的易反应,生成吡喃花色素苷,因此表明从黑加仑子种子中分离出的新型颜料是溶剂参与的结果。这种氧化加成作用扩展到成功合成了吡喃马维丁或2-(3,5-二甲氧基-4-羟基苯基)-8-羟基-5-甲基-3- O -β-d-吡喃葡萄糖基氧基吡喃并[4,3,2-主要葡萄花色苷麦维京素3- O-葡萄糖苷与丙酮的反应生成de ] -1-苯并吡啶鎓。通过2D NMR充分表征了吡喃马维菌素,吡喃花色素B和吡喃德啡肽B的化学结构。