Design, synthesis, biological evaluation, structure-activity relationship, and toxicity of clinafloxacin-azole conjugates as novel antitubercular agents
作者:Jie Liu、Zhenghong Ren、Li Fan、Jianyong Wei、Xuemei Tang、Xingran Xu、Dacheng Yang
DOI:10.1016/j.bmc.2018.11.035
日期:2019.1
Based on the advantages of azole molecules and fluoroquinolone drugs, we designed and synthesized 34 clinafloxacin-azole conjugates using fragment-based drug design and drug combination principles. The in vitro activities of the synthesized conjugates against Mycobacterium tuberculosis (H37Rv), Hela cell as well as Gram-positive and Gram-negative bacteria were assayed. The bioassay results revealed
基于吡咯分子和氟喹诺酮类药物的优势,我们使用基于片段的药物设计和药物组合原理设计并合成了34种clinafloxacin-azole缀合物。在体外对所合成的缀合物的活性的结核分枝杆菌(H37Rv株),Hela细胞以及革兰氏阳性和革兰氏阴性细菌进行测定。该生物分析结果表明,大多数靶分子具有抗结核病(anti-TB)活性,其中14种化合物具有非常强的抗结核病活性[最低抑菌浓度(MIC)<2μM]。此外,对H37Rv具有强活性的化合物对革兰氏阴性和革兰氏阳性细菌的活性较弱,对H37Rv表现出明显的选择性。预测的毒性数据表明,有27个分子的毒性或与原始药物(克林沙星)相比低。尤其是,已证明化合物TM21具有最强的抗TB活性(MIC = 0.29μM),较低的抗菌活性,可忽略的毒性和良好的药物相似性值,可被视为未来优化的理想先导分子。