• Archives of Pharmacal Research
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• 제29권3호
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• pp.183-187
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• 2006

A series of 6-hydroxy-7-methoxy-4-oxo-4H-chromene-2-carboxylic acid N-alkyl amides (3a-g) were synthesized and their antioxidant activities were evaluated using rat brain homogenates.

• Archives of Pharmacal Research
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• 제29권9호
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• pp.728-734
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• 2006

A series of 7-hydroxy-4-oxo-4H-chromene- (3a - h) and 7-hydroxychroman-2-carboxylic acid N-alkyl amides (4a - g) were synthesized and their antioxidant activities were evaluated. While compounds 3a - h were less active, compounds 4a - g exhibited more potent inhibition of lipid peroxidation initiated by $Fe^{2+}$ and ascorbic acid in rat brain homogenates. Among them, 7-hydroxychroman-2-carboxylic acid N-alkylamides (4e - g) bearing nonyl, decyl, and undecyl side chain exhibited 3 times more potent inhibition than trolox (1).