Coumarins: Fast Synthesis by Knoevenagel Condensation under Microwave Irradiation
作者:Dariusz Bogdał
DOI:10.1039/a801724g
日期:——
Condensation of salicyaldehyde or its derivatives with various derivatives of ethyl acetate in the presence of piperidine leads to the synthesis of coumarins by a solvent free reaction under microwave irradiation.
Adenosine receptors participate in many physiological functions. Molecules that may selectively interact with one of the receptors are favorable multifunctional chemical entities to treat or decelerate the evolution of different diseases. 3-Arylcoumarins have already been studied as neuroprotective agents by our group. Here, differently 8-substituted 3-arylcoumarins are complementarily studied as ligands of adenosine receptors, performing radioligand binding assays. Among the synthesized compounds, selective A(3) receptor antagonists were found. 3-(4-Bromophenyl)-8-hydroxycoumarin (compound 4) displayed the highest potency and selectivity as A(3) receptor antagonist (K-i = 258 nM). An analysis of its X-ray diffraction provided detailed information on its structure. Further evaluation of a selected series of compounds indicated that it is the nature and position of the substituents that determine their activity and selectivity. Theoretical modeling calculations corroborate and explain the experimental data, suggesting this novel scaffold can be involved in the generation of candidates as multitarget drugs.
Synthesis and Evaluation of Coumarin–Resveratrol Hybrids as 15-Lipoxygenaze Inhibitors
A series of coumarin-resveratrol hybrids, 3-arylcoumarin derivatives 3a-u, were synthesized through the intermolecular condensation reaction of various salicylaldehydes and phenylacetic acids in the presence of 1,4-diazabicyclo[2.2.2]octane under solvent-free conditions. All the synthesized compounds were screened for their inhibitory potency against soybean 15-lipoxygenase. Among them, three compounds (3c, 3j, and 3q) showed good enzyme-inhibitory activities.
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作者:M. P. Nemeryuk、V. D. Dimitrova、A. L. Sedov、O. S. Anisimova、V. F. Traven'
DOI:10.1023/a:1015359830129
日期:——
Synthesis, Molecular Modeling and Cytotoxicity Study of New 3-Phenyl Coumarin Derivatives against in vitro Cell Lines
作者:Anuruddha Chabukswar、Prajakta V. Adsule、Swati Jagdale、Dishank V. Purandare、Kunal Raut、Yash Kale
DOI:10.14233/ajchem.2024.31269
日期:——
In pursuit of more effective cancer treatments, researchers embarked on a study to enhance the coumarin derivative’s therapeutic potential. These compounds, known for their anticancer properties, have faced challenges such as increased toxicity and drug resistance. The research aimed to design, synthesize and assess new 3-phenyl coumarin derivatives specifically for breast and lung cancer treatment. Utilizing 3-oxoacyl-reductase (1T8I), a series of compounds were synthesized from aromatic aldehydes and phenylacetic acid. Among the synthesized 11 compounds that were examined, compounds C01, C04, C05 and C08 had significant cytotoxic effects on both MCF-7 and MRC-5 cell lines. Particularly, compound C08, featuring ethoxy and nitrate substitution, exhibited remarkable potential against both cancer cell lines, emphasizing its promise for further exploration in cancer therapy.