Potent in vitro and in vivo antitubercular activity of certain newly synthesized indophenazine 1,3,5-trisubstituted pyrazoline derivatives bearing benzofuran

Fourteen newly synthesized derivatives of indophenazine 1,3,5-trisubstituted pyrazoline bearing benzofuran were prepared from benzofuran chalcones with indophenazine hydrazide through cycloaddition reaction. All the compounds were screened for their in vitro and in vivo antitubercular activity against drug resistant and multidrug-resistant Mycobacterium tuberculosis H37RV. The MIC50 and MIC90 were estimated and compared with rifampicin and gatifloxacin standard drugs. Nitro group containing at ortho 5j, meta 5e, furan ring containing 5m and ortho 5i, para 5h chloro containing compounds were exhibited significant in vitro, in vivo antitubercular activity against standard drugs.