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Design, synthesis, in silico, and in vitro evaluation of 3-phenylpyrazole acetamide derivatives as antimycobacterial agents. 2021

Nikhil B Gaikwad, and Krishna Nirmale, and Santosh K Sahoo, and Mohammad N Ahmad, and Grace Kaul, and Manjulika Shukla, and Srinivas Nanduri, and Arunava Das Gupta, and Sidharth Chopra, and Madhavi V Yaddanapudi
Department of Pharmaceutical Technology and Process Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, Telangana, India.

Mycobacterium tuberculosis (Mtb) is one of the most dangerous pathogens affecting immunocompetent and immunocompromised patients worldwide. Novel molecules, which are efficient and can reduce the duration of therapy against drug-resistant strains, are an urgent unmet need of the hour. In our current study, a series of new 2-(3-phenyl-1H-pyrazol-1-yl)acetamide and N'-benzylidene-2-(3-phenyl-1H-pyrazol-1-yl)acetohydrazide derivatives were designed, synthesized, and evaluated for their antimycobacterial potential. The biological evaluation revealed that 6b, 6m, 6l, 7a, and 7k exhibited selective and potent inhibitory activity against Mtb. Furthermore, compounds 6m and 7h were found to be nontoxic to Vero cells with CC50 of greater than 20 and 80 mg/ml, respectively, and exhibited promising selectivity indices (SI) of greater than 666 and 320, respectively. All derivatives exhibited excellent ADME (absorption, distribution, metabolism, and excretion) properties in silico. Also, all the derivatives were found compliant with Lipinski's rule of five, showing their druggability profile. Molecular docking insights of these derivatives have shown outstanding binding energies on the mycobacterial membrane protein large transporters. These results indicate that this scaffold may lead to a potential antimycobacterial drug candidate in the discovery of antitubercular agents.

UI MeSH Term Description Entries
D008826 Microbial Sensitivity Tests Any tests that demonstrate the relative efficacy of different chemotherapeutic agents against specific microorganisms (i.e., bacteria, fungi, viruses). Bacterial Sensitivity Tests,Drug Sensitivity Assay, Microbial,Minimum Inhibitory Concentration,Antibacterial Susceptibility Breakpoint Determination,Antibiogram,Antimicrobial Susceptibility Breakpoint Determination,Bacterial Sensitivity Test,Breakpoint Determination, Antibacterial Susceptibility,Breakpoint Determination, Antimicrobial Susceptibility,Fungal Drug Sensitivity Tests,Fungus Drug Sensitivity Tests,Sensitivity Test, Bacterial,Sensitivity Tests, Bacterial,Test, Bacterial Sensitivity,Tests, Bacterial Sensitivity,Viral Drug Sensitivity Tests,Virus Drug Sensitivity Tests,Antibiograms,Concentration, Minimum Inhibitory,Concentrations, Minimum Inhibitory,Inhibitory Concentration, Minimum,Inhibitory Concentrations, Minimum,Microbial Sensitivity Test,Minimum Inhibitory Concentrations,Sensitivity Test, Microbial,Sensitivity Tests, Microbial,Test, Microbial Sensitivity,Tests, Microbial Sensitivity
D009169 Mycobacterium tuberculosis A species of gram-positive, aerobic bacteria that produces TUBERCULOSIS in humans, other primates, CATTLE; DOGS; and some other animals which have contact with humans. Growth tends to be in serpentine, cordlike masses in which the bacilli show a parallel orientation. Mycobacterium tuberculosis H37Rv
D011720 Pyrazoles Azoles of two nitrogens at the 1,2 positions, next to each other, in contrast with IMIDAZOLES in which they are at the 1,3 positions.
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D000081 Acetamides Derivatives of acetamide that are used as solvents, as mild irritants, and in organic synthesis.
D000995 Antitubercular Agents Drugs used in the treatment of tuberculosis. They are divided into two main classes: "first-line" agents, those with the greatest efficacy and acceptable degrees of toxicity used successfully in the great majority of cases; and "second-line" drugs used in drug-resistant cases or those in which some other patient-related condition has compromised the effectiveness of primary therapy. Anti-Tuberculosis Agent,Anti-Tuberculosis Agents,Anti-Tuberculosis Drug,Anti-Tuberculosis Drugs,Antitubercular Agent,Antitubercular Drug,Tuberculostatic Agent,Tuberculostatic Agents,Antitubercular Drugs,Agent, Anti-Tuberculosis,Agent, Antitubercular,Agent, Tuberculostatic,Anti Tuberculosis Agent,Anti Tuberculosis Agents,Anti Tuberculosis Drug,Anti Tuberculosis Drugs,Drug, Anti-Tuberculosis,Drug, Antitubercular
D013329 Structure-Activity Relationship The relationship between the chemical structure of a compound and its biological or pharmacological activity. Compounds are often classed together because they have structural characteristics in common including shape, size, stereochemical arrangement, and distribution of functional groups. Relationship, Structure-Activity,Relationships, Structure-Activity,Structure Activity Relationship,Structure-Activity Relationships
D015195 Drug Design The molecular designing of drugs for specific purposes (such as DNA-binding, enzyme inhibition, anti-cancer efficacy, etc.) based on knowledge of molecular properties such as activity of functional groups, molecular geometry, and electronic structure, and also on information cataloged on analogous molecules. Drug design is generally computer-assisted molecular modeling and does not include PHARMACOKINETICS, dosage analysis, or drug administration analysis. Computer-Aided Drug Design,Computerized Drug Design,Drug Modeling,Pharmaceutical Design,Computer Aided Drug Design,Computer-Aided Drug Designs,Computerized Drug Designs,Design, Pharmaceutical,Drug Design, Computer-Aided,Drug Design, Computerized,Drug Designs,Drug Modelings,Pharmaceutical Designs
D015394 Molecular Structure The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds. Structure, Molecular,Molecular Structures,Structures, Molecular
D062105 Molecular Docking Simulation A computer simulation technique that is used to model the interaction between two molecules. Typically the docking simulation measures the interactions of a small molecule or ligand with a part of a larger molecule such as a protein. Molecular Docking,Molecular Docking Simulations,Molecular Docking Analysis,Analysis, Molecular Docking,Docking Analysis, Molecular,Docking Simulation, Molecular,Docking, Molecular,Molecular Docking Analyses,Molecular Dockings,Simulation, Molecular Docking

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