Synthesis of 2-methyl-3-(2-(piperazin-1-yl)ethyl)-6,7,8,9-tetrahydro-4Hpyrido[ 1,2-a]pyrimidin-4-one Derivatives as Antimicrobial Agents
Doddakunche S. Prasanna,
Kanchugarakoppal S. Rangappa.
A series of novel 2-methyl-3-(2-(piperazin-1-yl)ethyl)-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one sulfonamide and carboxamide derivatives were synthesized in good yield. The synthesized compounds were characterized by 1H-NMR, FTIR and elemental analysis. All the synthesised compounds were screened for their in vitro antimicrobial activity by agar well diffusion and micro dilution method against standard strains of Gram-positive (Bacillus subtilis MTCC 121, Staphylococcus epidermidis 435), and Gram-negative (Xanthomonas campestris 7903 and Pseudomonas aeruginosa MTCC 7908) bacteria. Compound 7a and compound 8d with dichloro substitution among sulphonamide and carboxamide series respectively showed potent inhibitory activity.
Keywords: Acid chlorides, Antimicrobial activity, 2-Aminopyridine, Phosphorous oxychloride, Piperazine, Sulfonyl chlorides, carboxamide, sulfonamide, H-NMR, FTIR, Staphylococcus epidermidis, Pseudomonas aeruginosa, MTCC, Antimicrobial, antitubercular, beta-lactam derivatives
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