Synthesis and Biological Activity of 2,3-Bis-(2-Oxoylidene)-1,2,3,4-Tetrahydroquinoxalines
Condensation of alkylmethylketones with diethyl oxalate and 1,2-diaminobenzene yielded 2,3- bis -(2-oxoylidene)-1,2,3,4-tetrahydroquinoxalines ( II – IV ). Four isomeric species were identified using spectral methods. Structural features of the synthesized compounds were discussed. The biological ac...
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Published in | Pharmaceutical chemistry journal Vol. 48; no. 10; pp. 640 - 645 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Boston
Springer US
01.01.2015
Springer |
Subjects | |
Online Access | Get full text |
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Summary: | Condensation of alkylmethylketones with diethyl oxalate and 1,2-diaminobenzene yielded 2,3-
bis
-(2-oxoylidene)-1,2,3,4-tetrahydroquinoxalines (
II
–
IV
). Four isomeric species were identified using spectral methods. Structural features of the synthesized compounds were discussed. The biological activity of the obtained compounds was investigated. It was observed that the synthesized compounds had low toxicity. It was found that (1
Z
,1′Z)-1,1′-(1,4-dihydroquinoxaline-2,3-diylidene)dibutan-2-one (
II
) exhibited antinociceptive activity that was greater than that of metamizole sodium. The antioxidant activity in an
Escherichia coli
BW 25113 oxidation resistance model in the presence of H
2
O
2
solution (3 mM) was also most pronounced for
II
whereas
V
had pro-oxidant activity. The compounds showed high antiradical activity for diphenylpicrylhydrazyl (DPPH) binding that was comparable with that of trolox. |
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ISSN: | 0091-150X 1573-9031 |
DOI: | 10.1007/s11094-015-1163-6 |