Design, Synthesis, Computational Prediction, and Biological Evaluation of Ester Soft Drugs as Inhibitors of Dihydrofolate Reductase from <i>Pneumocystis c</i><i>arinii</i>
作者:Malin Graffner-Nordberg、Karin Kolmodin、Johan Åqvist、Sherry F. Queener、Anders Hallberg
DOI:10.1021/jm010856u
日期:2001.7.1
A series of lipophilic soft drugs structurally related to the nonclassical dihydrofolate reductase (DHFR) inhibitors trimetrexate and piritrexim have been designed, synthesized, and evaluated in DHFR assays, with special emphasis on the inhibition of P. carinii DHFR. The best inhibitors, encompassing an ester bond in the bridge connecting the two aromatic systems, were approximately 10 times less potent
已经设计,合成和评估了一系列与非经典二氢叶酸还原酶(DHFR)抑制剂曲美曲塞和匹瑞特昔姆相关的亲脂性软药物,并在DHFR分析中进行了评估,其中特别强调了对卡氏假单胞菌DHFR的抑制作用。最好的抑制剂在连接两个芳族系统的桥中包含一个酯键,其效价比曲美曲酯和派立特新的效价低约10倍。代谢物被设计为弱抑制剂。此外,为了更好地理解决定选择性的因素,对卡氏肺孢子虫和人酶中的三个配体与DHFR进行了分子动力学模拟。使用线性相互作用能法可以正确地确定DHFR的相对抑制率。软性药物旨在用于当地管理。选择了一种代表性的酯用于大鼠的药代动力学研究,发现该酯能快速代谢降解成预期的无活性代谢物。