The hemisynthesis of three new chalcones, namely kenzanol, kelianol A, and kelianol B, fromDorstenia barteri (Moraceae) is described here for the first time. The synthetic pathways employed in this work involved the pyrolysis and catalytic hydrogenation of readily available and starting materials, 4-hydroxylonchocarpin and isobavachalcone, two major constituents of the herbaceous plant D. barteri
此处首次描述了来自 Dorstenia barteri(桑科)的三种新查耳酮的半合成,即 kenzanol、kelianol A 和 kelianol B。这项工作中采用的合成途径涉及容易获得的起始材料 4-羟基磷酰胆碱和异巴伐查酮(草本植物 D. barteri 的两种主要成分)的热解和催化氢化。所有化合物的结构解析均通过质谱、红外、紫外、一维和二维核磁共振分析进行,并与以前的报告进行比较。