Synthesis of 2-Hydroxynaphthyl Pyrazolines Containing Isoniazid Moiety: A Potential Antitubercular Agents

Abstract

: The new series of pyrazolines derivatives containing isoniazid moiety were synthesized from 2-hydroxynaphthyl functionalized chalcones and isoniazid using sodium hydroxide as a base in 2-ethoxy ethanol.We are evaluated for their antitubercular activity against Mycobacterium tuberculosis strain (H37Rv) by Microplate Alamar Blue Assay (MABA) some of the tested compounds 3a, 3b, and 3c, were found to have higher antitubercular activity than the selected standard drugs, where as the compounds 3d, 3e, 3i and 3j found to have higher antitubercular activity than Streptomycin and same as that of drug Pyrazinamide and Ciprofloxacin. While remaining compound showed moderate activity. Where as it is found that the disubstituted halogen compound and electron withdrawing group on the phenyl ring are important substitution for increase in antitubercular activity.