Novel reactions of carbon suboxide. IV. Synthesis of some N-Hydroxy-2-oxo-2H-1-benzopyran-3-carboxamides
โ Scribed by Leonardo Bonsignore; Giuseppe Loy; Mario Secci; Salvatore Cabiddu
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- French
- Weight
- 170 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0040-4039
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a b s t r a c t N-substituted-3-carboxamido-coumarin derivatives were prepared and evaluated for selective antibacterial activity against 20 isolates of Helicobacter pylori clinical strains, including five metronidazole resistant ones. Some of them possessed the best activity against H. pylori metro
Synthesis and Photobiological Activity of N-Substituted 2-Oxo-2H-1benzopyran-3-(thio)carboxamides. -Piperidine-catalyzed condensation of benzaldehydes (I) with the malonic derivatives (II) gives a variety of polyfunctional coumarins ( III) (12 examples). They react readily with methyl iodide to the