Objective: The study aims at the derivatization of “Phthalides” and synthesizes 3- arylaminophthalides & 3-indolyl-phthalides compounds, and evaluates their anti-tubercular and antioxidant activities. The study has also intended to employ the in silico methods for the identification of possible drug targets in Mycobacterium and evaluate the binding affinities of synthesized compounds.

Methods: This report briefly explains the synthesis of phthalide derivatives using ammonium chloride. The synthesized compounds were characterized using spectral analysis. Resazurin Microtiter Assay (REMA) plate method was used to demonstrate the anti-mycobacterial activity of the synthesized compounds. An in-silico pharmacophore probing approach was used for target identification in Mycobacterium. The structural level interaction between the identified putative drug target and synthesized phthalides was studied using Lamarckian genetic algorithm-based software.

Results and Discussion: In the present study, we report an effective, environmentally benign scheme for the synthesis of phthalide derivatives. Compounds 5c and 5d from the current series appear to possess good anti-mycobacterial activity. dCTP: deaminasedUTPase was identified as a putative drug target in Mycobacterium. The docking results clearly showed the interactive involvement of conserved residues of dCTP with the synthesized phthalide compounds.

Conclusion: On the eve of evolving anti-TB drug resistance, the data on anti-tubercular and allied activities of the compounds in the present study demonstrates the enormous significance of these newly synthesized derivatives as possible candidate leads in the development of novel anti-tubercular agents. The docking results from the current report provide a structural rationale for the promising anti-tubercular activity demonstrated by 3-arylaminophthalides and 3-indolyl-phthalides compounds.

目的：本研究旨在“邻苯二酚”的衍生化，并合成3-芳基氨基邻苯二甲酸酯和3-吲哚基-邻苯二甲酸酯化合物，并评估其抗结核和抗氧化活性。该研究还打算采用计算机模拟方法来鉴定分枝杆菌中可能的药物靶标，并评估合成化合物的结合亲和力。

方法：本报告简要解释了使用氯化铵合成邻苯二甲酸酯衍生物的方法。使用光谱分析对合成的化合物进行表征。使用刃天青微量滴定分析（REMA）平板方法来证明合成化合物的抗分枝杆菌活性。计算机内药效团探测方法用于分枝杆菌中的靶标鉴定。使用基于Lamarckian遗传算法的软件研究了确定的推定药物靶标与合成邻苯二甲酸酯之间的结构水平相互作用。

结果与讨论：在本研究中，我们报告了一种有效的，对环境有益的方案，可用于合成邻苯二甲酸酯衍生物。当前系列的化合物5c和5d似乎具有良好的抗分枝杆菌活性。dCTP：deaminasedUTPase被确定为分枝杆菌的推定药物靶标。对接结果清楚地表明，dCTP的保守残基与合成的邻苯二甲酸酯化合物相互作用。

结论：在抗结核药物耐药性发展的前夕，本研究化合物的抗结核和相关活性的数据表明，这些新合成的衍生物作为开发新型抗结核药物的可能候选物具有巨大的意义。代理商。本报告的对接结果为3-芳基氨基邻苯二甲酸酯和3-吲哚基-邻苯二甲酸酯化合物所显示的抗结核活性提供了结构上的依据。