Synthesis and Anti - Microbial Activity of Novel Isoxazoline Mannich Base Derivatives Containing Carbazole Ring

A Novel Series of Compounds were synthesized by Condensation reaction of Carbazole aldehyde with Substituted Acetophenone derivatives 4 (a-d) in presence of alcoholic Sodium hydroxide Solution to get Chalcone Intermediates 5 (a-d), which were further treated hydroxyl amine hydrochloride in presence of Pyridine to get Iso Oxazoline Derivatives 6 (a-d). The latter were refluxed with Substituted Primary amines and formaldehyde for 8-10 hrs to get Mannich bases. The Structures of new compounds were confirmed by IR and 1H NMR and 13C NMR Spectral Data. Anti-bacterial and Anti-fungal Activities were evaluated and compared with the standard drugs, some compounds of the series Exhibited Promising Anti-microbial and Anti-fungal Activity Compared to Standard Drugs.