Fly-ash:H2SO4 catalyzed solvent free efficient synthesis of some aryl chalcones under microwave irradiation
作者:G. Thirunarayanan、P. Mayavel、K. Thirumurthy
DOI:10.1016/j.saa.2012.01.054
日期:2012.6
Some 2E aryl chalcones have been synthesized using greener catalyst Fly-ash:H2SO4 assisted solvent free environmentally benign Crossed-Aldol reaction. The yields of chalcones are more than 90%. The synthesized chalcones are characterized by their physical constants and spectral data. (C) 2012 Elsevier B.V. All rights reserved.
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.
Antiproliferative and pro-apoptotic activities of 2′- and 4′-aminochalcones against tumor canine cells
作者:Mariana B. Santos、Vitor C. Pinhanelli、Mayara A.R. Garcia、Gabriel Silva、Seung J. Baek、Suzelei C. França、Ana L. Fachin、Mozart Marins、Luis O. Regasini
DOI:10.1016/j.ejmech.2017.06.049
日期:2017.9
In the present study, a series of 2'- and 4'-aminochalcones were synthesized and their antiproliferative activity against a canine malignant histiocytic cell line (DH82) was evaluated. Particularly aminochalcones with a hydrophobic substituent on ring B proved to be potent antiproliferative agents. Among these compounds, aminochalcones 3, 4 and 11 inhibited the growth of DH82 cells, with IC50 values of 34.4, 31.4 and 38.2 mu M, respectively, and were three times more potent than etoposide (IC50 = 95.5 mu M). The selected chalcones induced death through apoptosis rather than necrosis in DH82 and non-tumorigenic Madin-Darby canine kidney cells (MDCK). Further experiments suggested that the aminochalcones interfere with the regulation of oncogenesitumor suppressor genes. Aminochalcone 11 inhibited transcription of the TOP011 alpha and TP53 genes and aminochalcone 4 down-regulated Sp1 protein expression in a concentration-dependent manner. (C) 2017 Elsevier Masson SAS. All rights reserved.
Novel Potent and Selective DPP-4 Inhibitors: Design, Synthesis and Molecular Docking Study of Dihydropyrimidine Phthalimide Hybrids
作者:Ahmed A. E. Mourad、Ahmed E. Khodir、Sameh Saber、Mai A. E. Mourad
DOI:10.3390/ph14020144
日期:——
Methods: A novel series of dihydropyrimidine phthalimide hybrids was synthesized and evaluated for their in vitro and in vivo DPP-4 inhibition activity and selectivity using alogliptin as reference. Oral glucose tolerance test was assessed in type 2 diabetic rats after chronic treatment with the synthesized hybrids ± metformin. Cytotoxicity and antioxidant assays were performed. Additionally, molecular docking