10.1007/s11164-012-1009-8
The research focuses on the synthesis and mass spectral fragmentation patterns of nitrogen heterocycles with potential antimicrobial activity. The purpose of this study is to prepare and investigate the structure of various nitrogen-containing heterocyclic compounds, which have gained significant importance due to their diverse pharmacological properties, including antimicrobial, analgesic, antiasthmatic, and anti-inflammatory effects. The researchers synthesized a series of compounds, including 5-(P-tolyl)-2-[(3-bromo-4-methoxy benzylidene) hydrazino]-thiazole, 3-[(3-bromo-4-methoxy benzylidine) amino]-2-thiohydantion, and 4,6-disubstituted-3-[(3-bromo-4-methoxybenzyliden) amino]-2-thioxo pyrimidines, through cyclization reactions involving 3-bromo-4-methoxy benzaldehyde thiosemicarbazone and other reagents such as 4-methyl phenacyl bromide, ethyl chloroacetate, and dicarbonyl compounds. The synthesized compounds were then subjected to acetylation and condensation reactions to yield additional derivatives. The mass spectral fragmentation patterns of these compounds were investigated to elucidate their structures, providing valuable insights into the molecular ion peaks and fragmentation pathways. The research concluded that the synthesized compounds showed varying degrees of antimicrobial activity against Aspergillus flavus and Penicillium citrinum, with compound 1 exhibiting potent antifungal activity against A. flavus, comparable to the standard antifungal agent griseofulvin. However, compound 1 had no inhibitory effect on Penicillium sp., suggesting its potential as a growth factor for certain microbes. The study provides a foundation for further exploration of these compounds as potential antimicrobial agents.