Synthesis, biological evaluation and 3D-QSAR studies of new chalcone derivatives as inhibitors of human P-glycoprotein
作者:Zahida Parveen、Gerda Brunhofer、Ishrat Jabeen、Thomas Erker、Peter Chiba、Gerhard F. Ecker
DOI:10.1016/j.bmc.2014.02.005
日期:2014.4
one order of magnitude higher than the activity for an equilipohillic propafenoneanalogue. 2D- and 3D-QSAR studies indicate the importance of H-bond acceptors, methoxy groups, hydrophobic groups as well as the number of rotatable bonds as pharmacophoric features influencing P-gp inhibitoryactivity.
Curcumin possesses an attractive chemical structure with highly conjugated diferuloylmethane core. Curcumin mimics have been designed and prepared with an additional bridged phenyl ring in conjugation. Fourteen diverse analogues were evaluated against a panel of human cancer cell lines. The best analogue of the series i.e. compound 6a exhibited potent cytotoxicity against A431, epidermoid carcinoma cell line (IC50 = 1.5 mu M) and DLDI, colorectal adenocarcinoma cell line (IC50 = 6.9 mu M). In tubulin kinetics experiment, compound 6a destabilized polymerisation process (IC50 = 4.68 mu M). In cell cycle analysis, compound 6a exerted G2/M phase arrest in A431 cells and induced apoptosis. In Ehrlich Ascites Carcinoma in Swiss-albino mice, compound 6a showed 78.6% tumour reduction at 80 mg/kg dose and 57% solid tumour reduction at 150 mg/kg dose. Further, in acute-oral toxicity experiment in rodent model, compound 6a was given in three different oral doses to Swiss albino mice. There were nonsignificant changes in various biochemical parameters and major body organs studied, including their absolute and relative weights. It was tolerable up to 300 mg/kg dose in Swiss -albino mice. The present study shows that the novel curcumin mimic 6a is a safe and efficacious anticancer compound. However, it needs to be optimized for better efficacy. (C) 2018 Elsevier Masson SAS. All rights reserved.
Design, synthesis and drug resistance reversal potential of novel curcumin mimics Van D
作者:Gaurav Raj Dwivedi、Sadiya Khwaja、Arvind Singh Negi、Swati S. Panda、A. Swaroop Sanket、Sanghamitra Pati、Amit Chand Gupta、Dnyaneshwar Umrao Bawankule、Debabrata Chanda、Rajni Kant、Mahendra P. Darokar
DOI:10.1016/j.bioorg.2020.104454
日期:2021.1
crucial part of plant-based novel discovery of drug from natural resources, a study was done to explore the antibacterial potential of curcumin mimics in combination with antibiotics against multidrug resistant isolates of Pseudomonas aeruginosa. The best candidate Van D, a curcumin mimics reduced the MIC of tetracycline (TET) up to 16 folds against multidrug resistant clinical isolates. VanD further inhibited