Discovery, synthesis and structure–activity analysis of symmetrical 2,7-disubstituted fluorenones as urea transporter inhibitors
作者:Sujin Lee、Cristina Esteva-Font、Puay-Wah Phuan、Marc O. Anderson、A. S. Verkman
DOI:10.1039/c5md00198f
日期:——
Kidney urea transporters are targets for development of small-moleculeinhibitors with action as salt-sparing diuretics. A cell-based, functional high-throughput screen identified 2,7-bisacetamido fluorenone 3 as a novel inhibitor of urea transporters UT-A1 and UT-B. Here, we synthesized twenty-two 2,7-disubstituted fluorenone analogs by acylation. Structure–activity relationship analysis revealed:
肾 尿素转运蛋白是小分子抑制剂的开发目标,并起着保盐利尿剂的作用。基于细胞的功能性高通量筛选确定了2,7-双乙酰氨基芴酮3是一种新型的抑制剂尿素转运蛋白UT-A1和UT-B。在这里,我们合成了22个2,7-二取代芴酮酰化的类似物。结构-活性关系分析表明:(a)UT抑制需要C9处的羰基部分;(b)对C2,7-取代基的空间限制; (c)新月形结构的重要性。最有效的抑制芴UT-A1和UT-B尿素运输带IC 50〜1μM。肝微粒体中体外代谢稳定性的分析表明,2,7-二取代的芴酮被还原酶代谢并随后被消除。计算对接至UT-A1的同源性模型表明,UT抑制剂在与假定的尿素结合位点不重叠的位点与UT胞质域结合。