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Mannich bases of 3-acetyl coumarin 1 and 4-methyl-7-methoxy-8-acetyl coumarin 4 on reaction with substituted phenacyl bromide pyridinium salts 2a-f in the presence of ammonium acetate in refluxing… (More)
Various 3-phenyl-4-methyl-6-(6-arylpyridin-2-yl) coumarins 5a-f and 3-phenyl-4-methyl-6-(4,6-diarylpyridin-2-yl) coumarins 7a-f have been synthesized by reacting… (More)
All synthesized compounds (III) exhibit lower antimicrobial activity compared to standard drugs.
Various 3-[1-phenyl-4-(2-substituted-5-oxo-oxazol-4-ylidenemethyl) pyrazol-3-yl] coumarins 4a-f; 3-[1-phenyl-4-(2,6-dimethyl-3,5-disubstituted-1,4-dihydropyridin-4-yl) pyrazol-3-yl] coumarins 5a-f… (More)
Abstract Some new 4-(2,6-diarylpyridin-4-yl)-2H-chromen-2-one derivatives 5a–l have been synthesized by reacting 4-(3-oxo-3-arylprop-1-enyl)-2H-chromen-2-ones 3a–c with appropriate… (More)
The title compound, 3,3,6-trimethyl-3,4-dihydroisocoumarin, C12H14O2, crystallizes into monoclinic space group P21/c with unit-cell parameters: a = 22.303(4), b = 7.0439(11), c = 22.589(4)A, β =… (More)