Synthesis of Some Thiazolyl and Oxazolyl Quinazoline Derivatives as Potential Anti-Microbial Agents.

Introduction: Quinazoline holds significant importance in pharmaceutical chemistry, which is included in a range of drugs, clinical contenders, and bioactive compounds. N-contain-ing heterocyclic compounds of quinazoline have a wide and distinct range of biopharmaceutical activities.

Methods: A series of newly synthesized heterocyclic compounds, namely, N-(4-substituted ben-zylidene)-2-(2-aminothiazol-4-yl)-6-methylquinazolin-3(4H)-amines (3a'-3e') and N-(4-substi-tuted benzylidene)-2-(2-aminooxazol-4-yl)-6-methylquinazolin-3(4H)-amines (3a-3e), were synthesized starting from 6-methylquinazolin-3(4H)-amine and 4-substituted benzaldehyde and their antibacterial and antifungal properties were evaluated. Moreover, they were compared with the well-known drugs Imipenem (as an antibacterial agent) and Miconazole (as an antifungal).

Results: Compound 3c' exhibited higher potential activity compared to newly synthesized other compounds and standard drugs when tested against the microorganism.

Conclusion: The structure of substances was determined through elemental analysis (C.H.N.) and various spectroscopic technique (1H NMR, 13C NMR, IR, and GCMS).