Abstract
The reaction of quinoxaline-2-carbaldehyde with ethyl (E)-3-aminocrotonate afforded ethyl 4-oxo-1,4-dihydropyrido[2,3-b]quinoxaline-3-carboxylate, which is a structural analog of nalidixic and 4-quinolone-3-carboxylic acids representing the basis of the known antibacterial drugs of the fluoroquinolone series.
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Charushin, V.N., Boguslavsky, A.M., Ponizovsky, M.G. et al. New method for the annelation of the pyridine fragment to azines. Russian Chemical Bulletin 53, 1267–1271 (2004). https://doi.org/10.1023/B:RUCB.0000042285.01674.58
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DOI: https://doi.org/10.1023/B:RUCB.0000042285.01674.58