在自然界中首次发现的新型砷化合物——同型砷胆碱。
Homoarsenocholine - A novel arsenic compound detected for the first time in nature.
机构信息
Institute of Chemistry, University of Graz, Universitaetsplatz 1, 8010 Graz, Austria.
Nuclear Physics Institute, Czech Academy of Sciences, Hlavní 130, 25068 Husinec-Řež, Czech Republic; Institute of Geology, Czech Academy of Sciences, Rozvojová 269, 16500 Prague 6, Czech Republic.
出版信息
Talanta. 2018 Oct 1;188:107-110. doi: 10.1016/j.talanta.2018.05.065. Epub 2018 May 22.
Abstract
The arsenic speciation was determined in macrofungi of the Ramaria genus with HPLC coupled to inductively coupled plasma mass spectrometry. Besides arsenic species that are already known for macrofungi, like arsenobetaine or arsenocholine, two compounds that were only known from marine samples so far (trimethylarsoniopropanate and dimethylarsinoylacetate) were found for the first time in a terrestrial sample. An unknown arsenical was isolated and identified as homoarsenocholine. This could be a key intermediate for further elucidation of the biotransformation mechanisms of arsenic.
摘要
采用高效液相色谱-电感耦合等离子体质谱联用技术测定了 Ramaria 属大型真菌中的砷形态。除了大型真菌中已有的砷形态，如砷甜菜碱或砷胆碱，目前仅在海洋样本中发现的两种化合物（三甲砷丙酯和二甲基砷酰基乙酸酯）也首次在陆生样本中被发现。分离并鉴定出一种未知的砷化合物为同型砷胆碱。这可能是进一步阐明砷生物转化机制的关键中间产物。
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