4-hydroxy-2-quinolones 165*. 1-R-4-hydroxy-2-oxo-1,2-dihydro-quinoline-3-carbaldehydes and their thiosemicarbazones. Synthesis, structure, and biological properties
摘要:
Two variants are discussed of the synthesis of 1-R-4-hydroxy-2-oxo-1,2-dihydroquinoline-3-carboxylic acid beta-N-tosylhydrazides which undergo a McFayden-Stevens reaction to give 1-R-4-hydroxy-2-oxo-1,2-dihydroquinoline-3-carbaldehydes in high yields. It was shown that the thiosemicarbazones prepared from them exist in the solid state exclusively in the syn-form while in solution a hydrazone. <-> enhydrazine tautomerism is observed. The results of a study of the antitubercular activity of the synthesized compounds are reported.
4-Hydroxy-2-quinolones 166*. Synthesis, isomerism, and antitubercular activity of 3-arylaminomethylene-quinoline-2,4-(1H,3H)-diones
作者:I. V. Ukrainets、Liu Yangyang、A. A. Tkach、A. V. Turov
DOI:10.1007/s10593-009-0356-x
日期:2009.7
Condensation of 4-hydroxy-2-oxo-1,2-dihydroquinoline-3-carbaldehydes, thioglycolic acid ( or methyl thioglycolate), and anilines does not lead to the synthesis of the corresponding thiazolidinylquinolones because the Schiff bases so formed exist exclusively in a form inert to enamine thioglycolates. H-1 NMR spectroscopy showed that the main components of the isolated 3-arylaminomethylenequinoline-2,4-(1H,3H)-diones are E-isomers. The results of a study of the antitubercular properties of the compounds obtained are presented.