Based on the data we got we believed that there should be a third resonant structure of the reaction intermediate hydroxyethyl thiamine pyrophosphate ( HEThDP ) besides the reported enamine resonant structure and C2-a-alkenyl carbanion resonant structure which might be named enol resonant structure .

根据我们得到的数据，我们认为其重要的反应中间体羟乙基 硫胺素 焦 磷酸（HEThDP）除文献报道的烯铵结构和C2α-碳负离子结构之外，还存在第三种共振结构，即烯醇式结构。