Stable isotope-labeled precursors were synthesized for an analysis by liquid chromatography-tandem mass spectrometry (LC-MS/MS) to elucidate the biosynthetic flow of capsaicinoids, capsinoids, and capsiconinoids. [1′-13C][5-2H]-Vanillin was prepared by the condensation of guaiacol with [13C]-chloroform and a D2O treatment. Labeled vanillylamine, vanillyl alcohol, ferulic acid, and coniferyl alcohol were prepared from the labeled vanillin. The labeled vanillylamine was converted to labeled capsaicinoid in a crude enzyme solution extracted from pungent Capsicum fruits.
通过
液相色谱-串联质谱(LC-MS/MS)分析合成了稳定同位素标记的前体,以阐明
辣椒素、
辣椒碱和
辣椒碱的
生物合成流程。[1′-13C][5-2H]-
香兰素是通过
愈创木酚与[13C]-
氯仿缩合并经 D2O 处理制备的。用标记的
香兰素制备标记的
香草醛胺、
香草醇、
阿魏酸和
松柏醇。在从辛辣辣椒果实中提取的粗酶溶液中,标记的香草胺被转化为标记的
辣椒碱。