Piperazine derivatives: Synthesis, inhibition of the Mycobacterium tuberculosis enoyl-acyl carrier protein reductase and SAR studies
作者:Mariane Rotta、Kenia Pissinate、Anne Drumond Villela、Davi Fernando Back、Luis Fernando Saraiva Macedo Timmers、José Fernando Ruggiero Bachega、Osmar Norberto de Souza、Diógenes Santiago Santos、Luiz Augusto Basso、Pablo Machado
DOI:10.1016/j.ejmech.2014.11.034
日期:2015.1
in the submicromolar range. A structure–activity relationship (SAR) evaluation indicated the importance of the chemical environment surrounding the carbonyl group for inhibition. In addition, the structure of one selected compound was supported by crystallographic studies, and experimental geometrical values were compared with semi-empirical quantum chemical calculations. Furthermore, the mode of inhibition
在结核分枝杆菌NADH依赖性烯酰基-酰基载体蛋白还原酶(玛INHA)催化氢化物转移到长链烯酰基硫酯的底物。Mt InhA是II型分枝杆菌解离的脂肪酸生物合成系统的成员,并且是异烟肼的真正靶点,异烟肼是治疗肺结核的最处方药。在这里,合成了一系列哌嗪衍生物,并筛选了它们作为Mt InhA抑制剂,从而用IC 50鉴定了化合物值在亚微摩尔范围内。结构-活性关系(SAR)评估表明,羰基周围的化学环境对于抑制作用非常重要。此外,一种选择的化合物的结构得到晶体学研究的支持,并将实验几何值与半经验量子化学计算进行了比较。此外,确定了九种活性最高的化合物的抑制方式和抑制解离常数。这些发现表明,这9个含H-氟-9-基-哌嗪的化合物在烯酰基硫酯(2-反式-十二烯酰基-CoA)底物结合位点与Mt InhA相互作用。