Benzimidazoquinazolines as new potent anti-TB chemotypes: Design, synthesis, and biological evaluation.

In search for new molecular entities as anti-TB agents, the benzimidazoquinazoline polyheterocyclic scaffold has been designed adopting the scaffold hopping strategy. Thirty-two compounds have been synthesized through an improved tandem decarboxylative nucleophilic addition cyclocondensation reaction of o-phenylenediamine with isatoic anhydride followed by further cyclocondensation of the intermediately formed 2-(o-aminoaryl)benzimidazole with trialkyl orthoformate/acetate. The resultant benzimidazoquinazolines were evaluated in vitro for anti-TB activity against M.

Synthesis, biological evaluation and structure-activity relationship of 2-styrylquinazolones as anti-tubercular agents.

2-Styrylquinazolones are reported as a novel class of potent anti-mycobacterial agents. Forty-six target compounds have been synthesized using one pot reaction involving isatoic anhydride, amine, and triethyl orthoacetate followed by aldehyde to construct the 2-styrylquinazolone scaffold. The anti-mycobacterial potency of the compounds was determined against H37Rv strain.

Oxazolidinones as Anti-tubercular Agents: Discovery, Development and Future Perspectives.

TB drug development pipeline represents varied structural classes of molecules. Oxazolidinones represent synthetic anti-bacterial agents with unique mechanism of action having wide spectrum of activity, oral bioavailability and well established SAR. They act by inhibiting translation at the initiation phase of protein synthesis.