Thalassosamide, a Siderophore Discovered from the Marine-Derived Bacterium Thalassospira profundimaris.

Thalassosamide, a Siderophore Discovered from the Marine-Derived Bacterium Thalassospira profundimaris.
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DOI:
10.1021/acs.jnatprod.7b00328
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发表时间:
2017-09-22
影响因子:
5.1
通讯作者:
Bugni TS
Bugni TS
中科院分区:
生物学2区
文献类型:
--
作者:
Zhang F;Barns K;Hoffmann FM;Braun DR;Andes DR;Bugni TS

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在这里,我们描述了快速识别和优先级的新的活性海洋天然产物,使用改进的去复制策略。在我们筛选海洋天然产物库的过程中,从α-变形杆菌Thalassospira prof undimaris中发现了一种新的环状三异羟肟酸化合物,即海藻胺。其结构通过2D NMR和MS/MS实验确定,赖氨酸衍生单元的绝对构型通过Marveland分析确定,而C-9、9′和9″的绝对构型通过[Rh 2(OCOCF 3)4]配合物的圆二色谱数据和DFT NMR计算确定。塔拉索胺对铜绿假单胞菌显示出中等的体内功效。
Here we describe the rapid identification and prioritization of novel active marine natural products using an improved dereplication strategy. During the course of our screening of marine natural product libraries, a new cyclic trihydroxamate compound, thalassosamide, was discovered from the α-proteobacterium Thalassospira prof undimaris. Its structure was determined by 2D NMR and MS/MS experiments, and the absolute configuration of the lysine-derived units was established by Marfey’s analysis, whereas that of C-9, 9′, and 9″ was determined via the circular dichroism data of the [Rh2(OCOCF3)4] complex and DFT NMR calculations. Thalassosamide showed moderate in vivo efficacy against Pseudomonas aeruginosa.
DOI: 10.1021/np2009362
发表时间: 2012-02-01
影响因子: 5.1
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