Synthesis and antimicrobial evaluation of novel ethyl 2-(2-(4-substituted)acetamido)-4-subtituted-thiazole-5-carboxylate derivatives.

A series of novel molecules containing thiazole ring structure were designed and synthesized. The structures of the synthesized compounds were elucidated and confirmed by (1)H NMR, (13)C NMR, Mass spectrum and the purity was checked through HPLC analysis. Among these synthesized compounds, 3a-3i and 6a-6c were tested for their antimicrobial activity (minimum inhibitory concentration) against a series of strains of Bacillus subtilis, Staphylococcus aureus and Escherichia coli for antibacterial activity and against the strains of Candida albicans, Aspergillus flavus and Aspergillus niger for antifungal activity respectively. The results of the antimicrobial screening data revealed that most of the tested compounds showed moderate to good microbial inhibitions.

Synthesis and anti-inflammatory activity of some [4,6-(4-substituted aryl)-2-thioxo-1,2,3,4-tetrahydro-pyrimidin-5-yl]-acetic acid derivatives.

A series of [4,6-(substituted aryl)-2-thioxo-1,2,3,4-tetrahydro-pyrimidin-5-yl]-acetic acid (4a-r) has been synthesized by the base catalyzed condensation of beta-aroylpropionic acid, thiourea with aldehyde in ethanol. Structures of the new compound were established on the basis of (1)H NMR and IR spectral data. Anti-inflammatory activity in vivo were evaluated and compared with standard drug diclofenac sodium. Some compounds have shown moderate activity.

Synthesis and anti-inflammatory activity of some [2-amino-6-(4-substituted aryl)-4-(4-substituted phenyl)-1,6-dihydropyrimidine-5-yl]-acetic acid derivatives.

Dihydropyrimidines 4a-r have been synthesized by base catalysed condensation of beta-aroylpropanoic acid, guanidine nitrate and aromatic aldehyde. Structures of the new compounds were established on the basis of 1H NMR and IR spectral data. Anti-inflammatory activity in vivo was evaluated and compared with standard drug diclofenac sodium.