Occurrence of Benzoic Acid Esters as Putative Catabolites of Prunasin in Senescent Leaves of <i>Prunus laurocerasus</i>
作者:Jandirk Sendker、Therese Ellendorff、Aljoscha Hölzenbein
DOI:10.1021/acs.jnatprod.5b01090
日期:2016.7.22
LC-ESIMS profiles of senescent and green leaves were analyzed by principal component analysis. In senescent leaves, the concentrations of 36 compounds were increased significantly including several benzoic acid derivatives, of which prunasin amide-6′-benzoate (5) and prunasin acid-6′-benzoate (6) were isolated and identified. The observed metabolic changes were also induced by treatment of P. laurocerasus
樱桃李是一种常绿灌木,在其叶子中含有大量的生氰糖苷李子(1),当叶子因衰老或假衰老而变成绿褪色时,会分解为李宁酰胺(2)或葡萄糖-1-苯甲酸酯(4)。 。这项研究旨在系统地识别衰老相关的代谢产物,以进一步了解1的分解代谢。通过主成分分析法分析了衰老和绿叶的LC-ESIMS图谱。在衰老的叶片中,36种化合物的浓度显着增加,其中包括几种苯甲酸衍生物,其中李宁酰胺-6'-苯甲酸酯(5)并分离鉴定出李宁酸6'-苯甲酸酯(6)。观察到的代谢变化也是通过用外源乙烯处理月桂假单胞菌灌木诱导的。所提供的数据支持氧化分解代谢为1而不会释放氰化氢以及在衰老过程中其氮的迁移。在功能多样化和药物发现的背景下讨论了结果,其中衰老的植物材料代表了天然产物发现的广泛未开发的来源。