Probing the Azaaurone Scaffold against the Hepatic and Erythrocytic Stages of Malaria Parasites
作者:Marta P. Carrasco、Marta Machado、Lídia Gonçalves、Moni Sharma、Jiri Gut、Amanda K. Lukens、Dyann F. Wirth、Vânia André、Maria Teresa Duarte、Rita C. Guedes、Daniel J. V. A. dos Santos、Philip J. Rosenthal、Ralph Mazitschek、Miguel Prudêncio、Rui Moreira
DOI:10.1002/cmdc.201600327
日期:2016.10.6
potential of azaaurones as dual‐stage antimalarial agents was investigated by assessing the effect of a small library of azaaurones on the inhibition of liver and intraerythrocytic lifecycle stages of the malariaparasite. The whole series was screened against the blood stage of a chloroquine‐resistant Plasmodium falciparum strain and the liver stage of P. berghei, yielding compounds with dual‐stage activity
Azaaurones as Potent Antimycobacterial Agents Active against MDR‐ and XDR‐TB
作者:André Campaniço、Marta P. Carrasco、Mathew Njoroge、Ronnett Seldon、Kelly Chibale、João Perdigão、Isabel Portugal、Digby F. Warner、Rui Moreira、Francisca Lopes
DOI:10.1002/cmdc.201900289
日期:2019.8.20
isosteric counterparts, azaaurones and N-acetylazaaurones, against Mycobacterium tuberculosis. Aurones were found to be inactive at 20 μm, whereas azaaurones and N-acetylazaaurones emerged as the most potent compounds, with nine derivatives displaying MIC99 values ranging from 0.4 to 2.0 μm. In addition, several N-acetylazaaurones were found to be activeagainst multidrug-resistant (MDR) and extensively drug-resistant
Synthesis and cross-coupling reactions of tetraalkylammonium organotrifluoroborate salts
作者:Robert A Batey、Tan D Quach
DOI:10.1016/s0040-4039(01)01983-9
日期:2001.12
with hydrofluoric acid generates an in situ tetracoordinate hydronium organotrifluoroborate species which undergoes counterion exchange with tetra-n-butylammonium hydroxide. The resultant tetraalkylammoniumsalts are as air and moisture stable as their potassium organotrifluoroborate counterparts with the added advantage of being readily soluble in organic media. They were found to undergo Pd-catalyzed
PRMT5 is an important protein arginine methyltransferase that catalyzes the symmetric dimethylation of arginine resides on histones or non-histone substrate proteins. It has been thought as a promising target for many diseases, particularly cancer. Despite the potential applications of PRMT5 inhibitors in cancer treatment, very few of PRMT5i have been publicly reported. In this investigation, virtual
Combination of MS Binding Assays and affinity selection mass spectrometry for screening of structurally homogenous libraries as exemplified for a focused oxime library addressing the neuronal GABA transporter 1
作者:Jürgen Gabriel、Georg Höfner、Klaus T. Wanner
DOI:10.1016/j.ejmech.2020.112598
日期:2020.11
resulting oximelibrary was screened accordingly toward the GABAtransporter subtype 1 (GAT1), a drug target for several neurological disorders. After assessing sublibraries’ activities for inhibition of reporter ligand binding, hits in active ones were directly identified. This could be achieved by recording mass transitions for the reporter ligand as well as those predicted for the library components
这项研究提出了一种有效的筛选方法,该方法基于基于质谱(MS)的结合测定(MS Binding Assays)和亲和力选择质谱(ASMS)的组合,这些筛查被定制用于筛选具有相同质谱碎片模式的结构均质文库。在具有羟胺官能团的乳酸衍生物与醛反应后,针对几种神经系统疾病的药物靶点GABA转运蛋白亚型1(GAT1)相应地筛选所得的肟库。在评估子图书馆抑制报告配体结合的活性后,直接鉴定出活性物质的命中。这可以通过在多反应监测模式下使用三重四极杆质谱仪运行的单个LC-MS / MS中记录报告配体的质量跃迁以及库组分的预测跃迁来实现。可以通过计算IC可靠地确定具有预定义亲和力的匹配来自文库成分和报道分子配体的特定结合浓度的50值。该策略的应用揭示了六个命中,其中两个命中被重新合成以进行进一步的生物学评估。因此,最好的一个在MS结合分析中显示出ap K i为7.38,在[ 3 H] GABA吸收分析中显示出pIC