Development of quinone analogues as dynamin GTPase inhibitors
作者:Kylie A. MacGregor、Mohammed K. Abdel-Hamid、Luke R. Odell、Ngoc Chau、Ainslie Whiting、Phillip J. Robinson、Adam McCluskey
DOI:10.1016/j.ejmech.2014.06.070
日期:2014.10
Virtual screening of the ChemDiversity and ChemBridge compound databases against dynamin I (dynI) GTPase activity identified 2,5-bis-(benzylamino)-1,4-benzoquinone 1 as a 273 ± 106 μM inhibitor. In silico lead optimization and focused library-led synthesis resulted in the development of four discrete benzoquinone/naphthoquinone based compound libraries comprising 54 compounds in total. Sixteen analogues
针对dynamin I(dynI)GTPase活性对ChemDiversity和ChemBridge化合物数据库进行的虚拟筛选确定了2,5-双-(苄氨基)-1,4-苯醌1为273±106μM抑制剂。在计算机上进行了铅优化和以库为主导的合成,开发了四个基于苯醌/萘醌的化合物库,总共包含54种化合物。16种类似物比铅1更有效,其中2,5-双-(4-羟基苯胺基)-1,4-苯醌(45)和2,5-双(4-羧基苯胺基)-1,4-苯醌(49) IC 50最活跃值分别为11.1±3.6和10.6±1.6μM。分子建模表明,dynI GTP结合位点内49个分子的稳定化涉及许多氢键和疏水相互作用。评价了六个活性最高的抑制剂对网格蛋白介导的内吞作用(CME)的潜在抑制作用。醌45是最有效的CME抑制剂,IC 50(CME)为36±16μM。
Modulation of dual fluorescence modes and emissions of 2-(1,4-dioxo-1,4-dihydro-naphthalen-2-yl-amino)benzoic acid
作者:Munendra Pal Singh、Jubaraj B. Baruah
DOI:10.1016/j.molstruc.2017.08.004
日期:2017.12
hydrogen bonded compound 2-(1,4-dioxo-1,4-dihydronaphthalen-2-yl-amino)benzoic acid (ANQ) shows emission at single wavelength upon excitation in UV-region whereas it shows dual fluorescence emissions on excitation in visible region. Such emissions depend on solvent, concentration and pH. Solvent dependent structural changes of ANQ are reflected in solution studies carried out by 1 HNMR, UV–visible and fluorescence