Protonophoric and mitochondrial uncoupling activity of aryl-carbamate substituted fatty acids
作者:Hugo MacDermott-Opeskin、Callum Clarke、Xin Wu、Ariane Roseblade、Edward York、Ethan Pacchini、Ritik Roy、Charles Cranfield、Philip A. Gale、Megan L. O'Mara、Michael Murray、Tristan Rawling
DOI:10.1039/d2ob02049a
日期:——
protonophores and mitochondrial uncouplers that utilise a urea-based synthetic anion transport moiety to carry out the protonophoric cycle. Herein we show that replacement of the urea group with carbamate, a functional group not previously reported to possess anion transport activity, produces analogues that retain the activity of their urea counterparts. Thus, the aryl-carbamate substituted fatty
芳基脲取代的脂肪酸是质子载体和线粒体解偶联剂,它们利用基于尿素的合成阴离子转运部分来进行质子循环。在这里,我们表明用氨基甲酸酯(一种以前没有报道过具有阴离子转运活性的官能团)取代尿素基团会产生保留其尿素对应物活性的类似物。因此,芳基氨基甲酸酯取代的脂肪酸解偶联氧化磷酸化并通过破坏线粒体质子梯度来抑制 ATP 的产生。质子传输通过去质子化的芳基氨基甲酸酯自组装成膜可渗透的二聚体,通过羧酸基团与氨基甲酸酯部分的分子间结合形成。这些结果突出了氨基甲酸酯官能团的阴离子传输能力。
Species-Selective Pyrimidineamine Inhibitors of <i>Trypanosoma brucei S</i>-Adenosylmethionine Decarboxylase
作者:Oleg A. Volkov、Anthony J. Brockway、Stephen A. Wring、Michael Peel、Zhe Chen、Margaret A. Phillips、Jef K. De Brabander
DOI:10.1021/acs.jmedchem.7b01654
日期:2018.2.8
New therapeutic options are needed for treatment of human African trypanosomiasis (HAT) caused by protozoan parasite Trypanosoma brucei. S-Adenosylmethionine decarboxylase (AdoMetDC) is an essential enzyme in the polyamine pathway of T. brucei. Previous attempts to target this enzyme were thwarted by the lack of brain penetration of the most advanced series. Herein, we describe a T. brucei AdoMetDC inhibitor series based on a pyrimidineamine pharmacophore that we identified by target-based high-throughput screening. The pyrimidineamines showed selectivity for T. brucei AdoMetDC over the human enzyme, inhibited parasite growth in whole-cell assay, and had good predicted blood-brain barrier penetration. The medicinal chemistry program elucidated structure-activity relationships within the series. Features of the series that were required for binding were revealed by determining the X-ray crystal structure of TbAdoMetDC bound to one analog. The pyrimidineamine series provides a novel starting point for an anti-HAT lead optimization.
Aryl-urea fatty acids that activate the p38 MAP kinase and down-regulate multiple cyclins decrease the viability of MDA-MB-231 breast cancer cells
xenograft models in vivo. At present there is a deficiency of information on the structural requirements for the activity of CTU. Our initial study suggested that electron withdrawing groups were required on the aryl ring, and in this study we further evaluated the influence of the electronicproperties of aromatic substitution on the capacity of CTU analogues to decrease MDA-MB-231 breast cancer cell viability