synthesis and evaluation of curcuminoid analogues as antioxidant and antibacterial agents
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2017
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Abstract
Diazocoupling reaction of curcumin with different diazonium salts of p-toluidine, 2-aminopyridine, and 4-aminoantipyrine in pyridine yielded the arylhydrazones 2aāc. Arylhydrazone of p-toluidine reacted with urea, thiourea, and guanidine nitrate to produce 5,6-dihydropyrimidines. Further reaction of 2a with 2,3-diaminopyrdine in sodium ethoxide solution yielded 1H-pyrido[2,3-b][1,4]diazepine derivative. Bis(2,5-dihydroisoxazole) is obtained from the reaction of 2a with hydroxylamine hydrochloride, while its reactions with hydrazines afforded the respective 4,5-dihydro-1H-pyrazoles. The target compounds were evaluated as antioxidant and antibacterial agents. The tested compounds showed good to moderate activities compared to ascorbic acid and chloramphenicol, respectively.| Reference Key |
emam2017moleculessynthesis
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| Authors | ;Dalia R. Emam;Ahmad M. Alhajoj;Khaled M. Elattar;Nabila A. Kheder;Ahmed A. Fadda |
| Journal | Journal of ethnopharmacology |
| Year | 2017 |
| DOI | 10.3390/molecules22060971 |
| URL | |
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