A series of 19 isonicotinic acid hydrazide derivatives has been synthesized and evaluated for their in vitro antitubercular activity against Mycobacterium tuberculosis H37Rv using alamar blue susceptibility test. The synthesized compounds inhibit Mycobacterium tuberculosis H37Rv strain with minimum inhibitory concentration ranging from (0.00014-0.01174 mM). Among all synthesized compounds seven derivatives 2a, 2b, 2e, 2h, 2l, 2m and 2q were more potent than isoniazid and the compound 2q emerged as the most potent derivative, being more effective than isoniazid with an (MIC 0.00023 mM) in vitro. The results demonstrated the potential and importance of developing new isoniazid derivatives against Mycobacterium infections.
Synthesis and anti-mycobacterial activity of (E)-N′-(monosubstituted-benzylidene)isonicotinohydrazide derivatives
作者:Maria Cristina da Silva Lourenço、Marcelle de Lima Ferreira、Marcus Vinícius Nora de Souza、Mônica Amado Peralta、Thatyana Rocha Alves Vasconcelos、Maria das Graças M.O. Henriques
DOI:10.1016/j.ejmech.2007.08.003
日期:2008.6
A series of 22 (E)-N'-(monosubstituted-benzylidene)isonicotinohydrazide derivatives have been synthesized and evaluated for their in vitro antibacterial activity against Mycobacterium tuberculosis H37RV using Alamar Blue susceptibility test and the activity expressed as the minimum inhibitory concentration (MIC) in mu g/mL. Compounds 2f, 2g, 2j, 2k and 2q exhibited a significant activity (0.31-0.62 mu g/mL) when compared with first line drugs such as isoniazid (INH) and rifampicin (RIP) and could be a good starting point to develop new lead compounds in the fight against multi-drug resistant tuberculosis. (c) 2007 Elsevier Masson SAS. All rights reserved.