The phytosiderophore 2′-deoxymugineic acid (DMA) is exuded via the root system by all grasses (including important crop plants like rice, wheat and barley) to mobilize Fe(III) from soil and improve plant Fe nutrition, crucial for high crop yields. Elucidation of the biogeochemistry of 2′-deoxymugineic acid in the rhizosphere requires its quantification in minute amounts. To this end, 13C4-DMA was synthesized for the first time, from cheap isotopically labeled starting materials. The synthetic route utilizes l-allyl(13C2)glycine and l-(2-13C)azetidine (13C)carboxylic acid as versatile labeled building blocks. The title compound was recently used as an internal standard for analysis of soil and plant samples allowing the first accurate quantification of DMA in these matrices by means of LC-MS/MS. It is furthermore used in tracer experiments investigating biodegradation of DMA in soil.
所有禾本科植物(包括
水稻、小麦和大麦等重要作物)都会通过根系渗出植物苷元 2′-脱氧
木精酸 (
DMA),以动员土壤中的
铁(III),改善植物的
铁营养状况,这对作物高产至关重要。要阐明根圈中 2′-脱氧
木精酸的
生物地球
化学,需要对其进行微量定量。为此,我们首次利用廉价的同位素标记起始材料合成了 13C4-
DMA。合成路线利用 l-烯丙基(13C2)甘
氨酸和 l-(2-13C)氮杂
环丁烷(13C)
羧酸作为多功能标记构建模块。标题化合物最近被用作土壤和植物样品分析的内标,首次通过 LC-MS/MS 对这些基质中的
DMA 进行了精确定量。此外,它还被用于研究土壤中
DMA 生物降解的示踪实验。