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Design, Synthesis and Biological Evaluation of Anti-tuberculosis Agents based on Bedaquiline Structure

Chengjun Wu¹, Jinghan Luo¹, Mengtong Wu¹

¹Key Laboratory of Structure-Based Drug Design and Discovery, Shenyang Pharmaceutical University, Ministry of Education, Shenyang 110016, China.

Medicinal Chemistry (Shariqah (United Arab Emirates))

|June 18, 2019

Abstract

Background:

Bedaquiline is a novel anti-tuberculosis drug that inhibits Mycobacterial ATP synthase. However, studies have found that bedaquiline has serious side effects due to high lipophilicity. Recently, the complete structure of ATP synthase was first reported in the Journal of Science.

Objective:

The study aimed to design, synthesise and carry out biological evaluation of antituberculosis agents based on the structure of bedaquiline.

Methods:

The mode of action of bedaquiline and ATP synthase was determined by molecular docking, and a series of low lipophilic bedaquiline derivatives were synthesized. The inhibitory activities of bedaquiline derivatives towards Mycobacterium phlei 1180 and Mycobacterium tuberculosis H37Rv were evaluated in vitro. A docking study was carried out to elucidate the structureactivity relationship of the obtained compounds. The predicted ADMET properties of the synthesized compounds were also analyzed.

Results:

The compounds 5c3, 6a1, and 6d3 showed good inhibitory activities (MIC=15.62 ug.mL-1). At the same time, the compounds 5c3, 6a1, and 6d3 also showed good drug-like properties through molecular docking and ADMET properties prediction.

Conclusion:

The results of in vitro anti-tuberculosis activity assays, docking studies and ADMET predictions indicate that the synthesized compounds have potential antifungal activity, with compounds 6a1 being further optimized and developed as lead compounds.

Keywords:

ATP synthase Bedaquiline derivatives Mycobacterium tuberculosis anti-tuberculosis molecular docking ADMET

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