Synthesis of polysubstituted pyridines via reactions of chalcones and malononitrile in alcohols using Amberlite IRA-400 (OH−)
作者:Kiumars Bahrami、Mohammad M. Khodaei、Fardin Naali、Behrooz H. Yousefi
DOI:10.1016/j.tetlet.2013.07.080
日期:2013.9
Polysubstituted pyridine derivatives were synthesized through economical one-pot multicomponent reactions of different α,β-unsaturated ketones, malononitrile, and ethanol or methanol in the presence of Amberlite IRA-400 (OH−) at room temperature. The catalyst is recyclable several times without substantial loss of activity. Other valuable features include the wide range of functional group tolerance
Antiproliferative activity and p53 upregulation effects of chalcones on human breast cancer cells
作者:Mariana Bastos dos Santos、Daiane Bertholin Anselmo、Jéssica Gisleine de Oliveira、Bruna V. Jardim-Perassi、Diego Alves Monteiro、Gabriel Silva、Eleni Gomes、Ana Lucia Fachin、Mozart Marins、Débora Aparecida Pires de Campos Zuccari、Luis Octavio Regasini
DOI:10.1080/14756366.2019.1615485
日期:2019.1.1
Chalcones are valuable structures for drug discovery due to their broad bioactivity spectrum. In this study, we evaluated 20 synthetic chalcones against estrogen-receptor-positive breast cancer cells (MCF-7 line) and triple-negative breast cancer (TNBC) cells (MDA-MB-231 line). Antiproliferative screening by MTT assay resulted in two most active compounds: 2-fluoro-4'-aminochalcone (11) and 3-pyridyl-4'-aminochalcone (17). Their IC50 values ranged from 13.2 to 34.7 mu M against both cell lines. Selected chalcones are weak basic compounds and maintained their antiproliferative activity under acidosis conditions (pH 6.7), indicating their resistance to ion-trapping effect. The mode of breast cancer cells death was investigated and chalcones 11 and 17 were able to induce apoptosis rather than necrosis in both lines. Antiproliferative target investigations with MCF-7 cells suggested 11 and 17 upregulated p53 protein expression and did not affect Sp1 protein expression. Future studies on chalcones 11 and 17 can define their in vivo therapeutic potential.
Pyrroles and other heterocycles as inhibitors of P38 kinase
作者:Stephen E. de Laszlo、Denise Visco、Lily Agarwal、Linda Chang、Jayne Chin、Gist Croft、Amy Forsyth、Daniel Fletcher、Betsy Frantz、Candice Hacker、William Hanlon、Coral Harper、Matthew Kostura、Bing Li、Sylvie Luell、Malcolm MacCoss、Nathan Mantlo、Edward A. O'Neill、Chad Orevillo、Margaret Pang、Janey Parsons、Anna Rolando、Yousif Sahly、Kelley Sidler、W.Rick Widmer、Stephen J. O'Keefe
DOI:10.1016/s0960-894x(98)00495-8
日期:1998.10
Investigation of furans, pyrroles and pyrazolones identified 3-pyridyl-2,5-diaryl-pyrroles as potent, orally bioavailable inhibitors of p38 kinase. 3-(4-pyridyl-2-(4-fluoro-phenyl)-5-(4-methylsulfinylphenyl)-pyrrole (L-167307) reduces secondary paw swelling in the rat adjuvant arthritis model: ID50 = 7.4 mg/kg/b.i.d. (C) 1998 Elsevier Science Ltd. All rights reserved.
In vitro Antioxidant Activity and Scavenging Effects of Some Synthesized 4¢-Aminochalcones