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Current Bioactive Compounds

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ISSN (Print): 1573-4072
ISSN (Online): 1875-6646

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Research Article

Synthesis and In vitro Antibacterial, Antitubercular Studies of Novel Fluoroquinolones Analogs Containing 4-substituted Sec Amine

Author(s): Ravi K. Akula*, Shanthan R. Pamulaparthy, Pranay K. Koochana and Dharmarajan Sriram

Volume 15, Issue 6, 2019

Page: [656 - 664] Pages: 9

DOI: 10.2174/1573407214666180529124816

Price: $65

Abstract

Background: Tuberculosis is a contagious, air borne disease and second leading cause of death among infectious diseases worldwide. Fluoroquinolones are well-known antibacterial agents and they were recommended as second-line of antitubercular drugs.

Method: A series of novel fluoroquinolone analogs 6-24 was effectively synthesized. An attempt was made by tagging the substituted pyrazole on to fluoroquinolones for the first time at C-7 position. The newly synthesized compounds were characterized by FTIR, 1HNMR, ESI-MS, HR-MS and elemental analysis. The in vitro antibacterial activity of all the title compounds was investigated against various gram positive, gram negative bacterial organisms and in vitro antitubercular activity against Mycobacterium Tuberculosis H37Rv strain.

Result: Most of the synthesized compounds showed comparable activity against the entire gram positive and gram negative bacterial organisms. Fluoroquinolone 16 showed enhanced activity against both type of bacterial strains and compound 11showed promising activity against MTB-H37Rv strain.

Conclusion: Some of the novel fluoroquinolone analogs (11, 16) showed potent antibacterial, antitubercular activity.

Keywords: Fluoroquinolones, Tuberculosis, Antimicrobial activity, 2-(Piperidin-4-yl)-1H-benzo[d] imidazole, pharmacokinetic, benzimidazole.

Graphical Abstract

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