16807-64-0Relevant articles and documents
Dual Role of Oxoaldehydes: Divergent Synthesis of 3-Aryl- and 3-Aroylcoumarins
Moazzam, Ali,Khodadadi, Meysam,Jafarpour, Farnaz,Ghandi, Mehdi
, p. 3630 - 3637 (2022/02/16)
A facile and efficient synthetic approach to various valuable 3-aryl- and 3-aroylcoumarins by the direct arylation and aroylation of coumarins with glyoxals in a metal-free manner is presented. The aryl glyoxal is for the first time recognized to serve as an aryl surrogate in addition to its role as an aroyl transfer reagent via a simple switch in reaction conditions. The approach accommodates a broad substrate scope and high yields of the two types of cross-coupling reactions starting from identical starting materials.
Design, synthesis and in vivo evaluation of 3-arylcoumarin derivatives of rhenium(I) tricarbonyl complexes as potent antibacterial agents against methicillin-resistant Staphylococcus aureus (MRSA)
Sovari, Sara Nasiri,Vojnovic, Sandra,Bogojevic, Sanja Skaro,Crochet, Aurelien,Pavic, Aleksandar,Nikodinovic-Runic, Jasmina,Zobi, Fabio
, (2020/07/31)
We have prepared a series of ten 3-arylcoumarin molecules, their respective fac-[Re(CO)3(bpy)L]+ and fac-[Re(CO)3(L?L)Br] complexes and tested all compounds for their antimicrobial efficacy. Whereas the 3-arylcoumarin ligands are virtually inactive against the human-associated pathogens with minimum inhibitory concentrations (MICs) > 150 μM, when coordinated to the fac-[Re(CO)3]+ core, most of the resulting complexes showed remarkable antibacterial potency. Several rhenium complexes exhibit activity in nanomolar concentrations against Gram-positive pathogens such as Staphylococcus aureus strains, including methicillin-resistant S. aureus (MRSA) and Enterococcus faecium. The molecules do not affect bacterial cell membrane potential, but some of the most potent complexes strongly interact with DNA, indicating it as a possible target for their mode of action. In vivo studies in the zebrafish model showed that the complexes with anti-staphylococcal/MRSA activity were non-toxic to the organism even at much higher doses of the corresponding MICs. In the zebrafish-MRSA infection model, the complexes increased the survival rate of infected fish up to 100% and markedly reduced bacterial burden. Moreover, all rescued fish developed normally following the treatments with the metallic compounds.
Alpha-hydroxyketone compound containing coumarin, and preparation method and application of alpha-hydroxyketone compound
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Paragraph 0067-0069, (2019/09/17)
The invention provides an alpha-hydroxyketone compound containing coumarin, and a preparation method and an application of the alpha-hydroxyketone compound. In the alpha-hydroxyketone compound, R0 ismore than one of a halogen atom, R, OR, SR, SOR, SO2R, N