A series of novel [1,2,3]-triazolyl substituted benzo [c] coumarins have been synthesized by reacting various 3-coumarinoyl methyl pyridinium bromide salts with 1-(5-methyl-1-phenyl-1H-1,2,3-triazol-4-yl) ethanones in the presence of sodium acetate in refluxing acetic acid. The structures of the synthesized compounds have been elucidated by IR,1H-NMR,13C-NMR and Mass spectral data. All the synthesized compounds have been screened for theirinvitroanti-bacterial and anti-fungal activities. Some of the compounds have been found to be active against some bacterial and fungal pathogens compared to standard drugs.
Efficient synthesis of (R)-harmonine – the toxic principle of the multicolored Asian lady beetle (Harmonia axyridis)