Synthesis and Evaluation of 4-Hydroxycoumarin Imines as Inhibitors of Class II Myosins
作者:Jhonnathan Brawley、Emily Etter、Dante Heredia、Amarawan Intasiri、Kyle Nennecker、Joshua Smith、Brandon M. Welcome、Richard K. Brizendine、Thomas W. Gould、Thomas W. Bell、Christine Cremo
DOI:10.1021/acs.jmedchem.0c01062
日期:2020.10.8
Inhibitors of muscle myosin ATPases are needed to treat conditions that could be improved by promoting muscle relaxation. The lead compound for this study ((3-(N-butylethanimidoyl)ethyl)-4-hydroxy-2H-chromen-2-one; BHC) was previously discovered to inhibit skeletal myosin II. BHC and 34 analogues were synthesized to explore structure–activity relationships. The properties of analogues, including solubility
需要肌肉肌球蛋白 ATP 酶抑制剂来治疗可以通过促进肌肉放松来改善的病症。本研究的先导化合物((3-(N-丁基乙酰亚胺酰基)乙基)-4-羟基-2 H - chromen -2-one;BHC)先前被发现可抑制骨骼肌球蛋白II。合成了 BHC 和 34 种类似物以探索结构-活性关系。类似物的特性,包括溶解性、稳定性和毒性,表明 BHC 支架可用于开发治疗方法。快骨骼肌和心肌肌球蛋白II,抑制骨骼肌收缩力的肌动蛋白活化的ATP酶活性的抑制离体,和减慢在体外测量了肌动蛋白滑动速度。与 BHC 相比,具有芳香侧臂的几种类似物对骨骼肌球蛋白与心脏肌球蛋白的效力(半数最大抑制浓度 (IC 50 ) <1 μM)和选择性(≥12 倍)均有所提高。几种类似物阻断了神经传递,表明它们对非肌肉肌球蛋白 II 的选择性高于骨骼肌球蛋白。竞争和分子对接研究表明 BHC 和 blebbistatin 结合到肌球蛋白的同一位点。