QSAR study on the antibacterial activity of some sulfa drugs: building blockers of Mannich bases.

Sulfa drugs are building blockers of several types of Mannich bases. Consequently, the antibacterial activities of sulfa drugs are reported in this paper, which will help in explaining and understanding antibacterial activities of Mannich bases. Reported QSAR is carried out using distance-based topological indices and discussed critically on the basis of statistical parameters.

Synthesis and in vitro study of novel Mannich bases as antibacterial agents.

A series of novel Mannich bases derived from 5-chloro-2-methoxybenzamide and sulfonamides/amines have been synthesised and the antibacterial activities were evaluated against various Gram positive and Gram negative strains of bacteria. Some of the synthesized compounds showed superior in vitro activities as compared to their parent sulfonamides.

In vitro study of some medicinally important Mannich bases derived from antitubercular agent.

Biologically active Mannich bases with heteroaromatic ring system have been synthesised employing Mannich reaction of isonicotinyl hydrazide with various sulphonamides/secondary amines. They were analysed by elemental analysis and characterized by uv, ir, 1H nmr spectroscopic studies. The Mannich bases were screened for their antibacterial activity against various gram positive and gram negative bacteria and were analyzed statistically.

QSAR study on antibacterial activity of sulphonamides and derived Mannich bases.

The paper describes synthesis and comparative study on antibacterial activities of sulphonamides and Mannich bases derived from them. The compounds were screened for their antibacterial activity against various gram-positive and gram-negative bacteria and were analyzed statistically. The results have shown that the compounds are quiet active against pathogens under study and were nontoxic.