Acta Pharm. 55 (2005) 47-56[ Full paper in PDF ]
Condensation of ethylaceto acetate (EAA) with resorcinol in concentrated H2SO4 afforded 7-hydroxy-4-methyl coumarin (1) which on reaction with thiosemicarbazide in anhydrous pyridine yielded 7-hydroxy-4-methyl-quinolinyl [1,5-c]-mercaptotriazole (2). Reaction of 2 with formaldehyde solution and amino acid in ethanol yielded 7-hydroxy-4-methyl-8-(N-methyl-aminoacid)-quinolinyl [1,5-c]-2"-mercaptotriazole (3). Interaction of 3 with o-phenylenediamine in pyridine yielded 7-hydroxy-4-methyl-8-(aminobenzimidazolyl)-quinolinyl [1,5-c]-2"-mercaptotriazole derivatives (4a-e). The latter compounds were evaluated for their antiviral and antimicrobial activities.
Keywords: minimum inhibitory concentration, minimum essential medium, foetal bovine serum, cytotoxicity, mercaptotriazoles