Synthesis, biological evaluation and computational studies of pyrazole derivatives as <i>Mycobacterium tuberculosis</i> CYP121A1 inhibitors
作者:Lama A. Alshabani、Amit Kumar、Sam J. Willcocks、Gayathri Srithiran、Sanjib Bhakta、D. Fernando Estrada、Claire Simons
DOI:10.1039/d2md00155a
日期:——
orthogonal strategy was used to evaluate ligand binding independent of perturbations at the haem. For imidazole and triazole compounds, perturbations were more intense than cYY indicating tighter binding and confirming that ligand coordination occurs in the substrate-binding pocket despite very modest changes in UV-vis absorbance, consistent with computational studies and the demonstrated potential anti-tuberculosis
使用高效的 5 步合成方案制备了一系列咪唑和三唑二芳基吡唑衍生物,并评估了与结核分枝杆菌(Mtb) CYP121A1 的结合亲和力和对 Mtb H37Rv 的抗分枝杆菌活性。使用点培养生长抑制试验 (SPOTi) 测量抗分枝杆菌敏感性:咪唑显示最小抑制浓度 (MIC 90 ) 在 3.95–12.03 μg mL −1 (10.07–33.19 μM) 范围内,其中11f最活跃,而三唑显示 MIC 90在 4.35–25.63 μg mL −1 (11.88–70.53 μM) 范围内,12b最活跃的。使用 UV-vis 光谱评估结合亲和力表明,对于咪唑系列,4-氯芳基吡唑的丙氧基 ( 11f ) 和异丙氧基 ( 11h ) 衍生物显示 Mtb CYP121A1 II 型结合亲和力,与K d分别为 11.73 和 17.72 μM天然底物 cYY ( K d 12.28 μM),而在三唑系列中,只有