Synthesis, anti-bacterial, anti-asthmatic and anti-diabetic activities of novel N-substituted-2-(4-phenylethynyl-phenyl)-1H-benzimidazoles and N-substituted 2[4-(4,4-dimethyl-thiochroman-6-yl-ethynyl)-phenyl)-1H-benzimidazoles
Synthesis of a series of novel and functionalized benzimidazole derivatives by the condensation of OPDA with 4-bromobenzoic acid and subsequent reactions of the product obtained with phenylacetylene and 6-ethynyl-4,4-dimethylthiochroman utilising Sonogashira coupling has been reported. The Sonogashira coupling products were then alkylated at the benzimidazole -NH with different electrophilic reagents