1022283-07-3Relevant academic research and scientific papers
Expedious synthesis for α, β-unsaturated coumarin derivatives using boran chelates: A novel class of potential antibacterial and antioxidant agents
Hamdi, Naceur,Bouabdallah, Feten,Romerosa, Antonio,Benhassen, Rached
, p. 1261 - 1268 (2010)
A new family of coumarin derivatives (4a-i) containing a chalcone moiety was synthesized by condensation of 3-acetyl-4-difluoro boryloxycoumarin (2) with aryl and heteroaryl aldehydes with piperidine in chloroform. Resulting compounds were characterized by IR, 13C, 1H NMR and UV visible spectroscopy. Compound 3-((2E)-3-(3,4,5-Trimethoxy-phenyl)prop-2-enoyl)- 2(H)-chromen-2-one (4g) was characterized by single crystal X-ray diffraction. The antioxidant and antibacterial activities of the obtained compounds 4a-i was evaluated. The biological activity found for these compounds is discussed against their structural features, physical and chemical properties.
A rapid access to new coumarinyl chalcone and substituted chromeno[4,3-c]pyrazol-4(1H)-ones and their antibacterial and DPPH radical scavenging activities
Hamdi, Naceur,Fischmeister, Cedric,Puerta, M. Carmen,Valerga, Pedro
experimental part, p. 522 - 530 (2012/05/04)
A series of new coumarin derivatives 4 containing a chalcone moiety were synthesized by condensation of 3-acetyl-4-hydroxycoumarin 1 with aryl or heteroaryl aldehydes 2 in the presence of piperidine in chloroform. The interaction of 3-formyl-4-chloro-coumarin 3 with nitrogen compound nucleophiles are described and lead to the corresponding substituted chromen[4,3-c] pyrazol-4-ones 5. The structures of the obtained compounds were established on the basis of IR|1D|2D NMR, while crystal structure of 3-acetyl-4-hydroxy coumarin 1 was determined using X-ray diffraction and further were evaluated for possible antibacterial and antioxidant activities. The coumarinic chalcone 4d has been found to be the most active (IC50 = 2.07 μM) in this study.
