Title:Synthesis of 2-Hydroxynaphthyl Pyrazolines Containing Isoniazid Moiety:
A Potential Antitubercular Agent
Volume: 19
Issue: 3
Author(s): Gajanan Kottapalle, Nagesh Deshmukh and Avinash Shinde*
Affiliation:
- PG Research Center & Department of Chemistry, N.E.S. Science college, Nanded, Dist-Nanded 431602, Maharashtra, India
Keywords:
Chalcones, pyrazolines, isoniazid, antitubercular activity, 2-hydroxynaphthyl pyrazolines, antitubercular agent.
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 evaluated 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, whereas compounds
3d, 3e, 3i and 3j were found to have higher antitubercular activity than Streptomycin and same as that
of Pyrazinamide and Ciprofloxacin, while remaining compound showed moderate activity. Whereas it
is found that the disubstituted halogen compound and electron-withdrawing group on the phenyl ring
are important substitutions for an increase in antitubercular activity.