Chiral linkers to improve selectivity of double-headed neuronal nitric oxide synthase inhibitors
作者:Qing Jing、Huiying Li、Georges Chreifi、Linda J. Roman、Pavel Martásek、Thomas L. Poulos、Richard B. Silverman
DOI:10.1016/j.bmcl.2013.08.034
日期:2013.10
exhibits a potency of 32 nM against nNOS and is 475 and 244 more selective for nNOS over eNOS and iNOS, respectively. Crystal structures show that the additional binding between the aminomethyl moiety of 6b and the two heme propionates in nNOS, but not eNOS, is the structural basis for its high selectivity. This work demonstrates the importance of stereochemistry in this class of molecules, which significantly
为了开发有效和选择性的 nNOS 抑制剂,设计了具有手性接头的新型双头分子,这些接头源自天然氨基酸或其衍生物。新结构包含两个醚键,大大简化了合成并加速了结构优化。Inhibitor ( R ) -6b对 nNOS 的效力为 32 nM,对 nNOS 的选择性分别比 eNOS 和 iNOS 高 475 和 244。晶体结构表明6b的氨甲基部分之间的额外结合nNOS 中的两种血红素丙酸酯(而非 eNOS)是其高选择性的结构基础。这项工作证明了立体化学在此类分子中的重要性,它显着影响了抑制剂的效力和选择性。这里收集的结构-活性信息为未来的结构优化提供了指导。