Herein, we report the synthesis and anti-tubercular studies of novel molecules based on thiophene scaffold. We identified two novel small molecules 4a and 4b, which demonstrated 2-fold higher in vitro activity (MIC₉₉: 0.195 μM) compared to first line TB drug, isoniazid (0.39 μM). The identified leads demonstrated additive effect with front line TB drugs (isoniazid, rifampicin and levofloxacin) and synergistic effect with a recently FDA-approved drug, bedaquiline. Mechanistic studies (i) negated the role of Pks13 and (ii) suggested the involvement of KatG in the anti-tubercular activity of these identified leads.

中文翻译：

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噻吩基小分子的合成和评估，作为结核分枝杆菌的有效抑制剂。

在这里，我们报告基于噻吩支架的新型分子的合成和抗结核研究。我们确定了两个新的小分子图4a和4b中，这表明高2倍的体外（MIC活动₉₉：0.195  μ相比第一线TB药物，异烟肼（0.39 M）  μ M）。鉴定出的线索证明与一线结核病药物（异烟肼，利福平和左氧氟沙星）具有加合作用，与最近获得FDA批准的药物bedaquiline具有协同作用。机理研究（i）否定了Pks13的作用，并且（ii）建议KatG参与这些已鉴定导线的抗结核活性。