an urgent need to identify new antibiotics with novel mechanisms that combat antibiotic resistant bacteria. Herein, a series of chalcone derivatives that mimic the essential properties of cationic antimicrobial peptides were designed and synthesized. Antibacterialactivities against drug-sensitive bacteria, including Staphylococcus aureus, Enterococcus faecalis, Escherichia coli and Salmonella enterica
Discovery of novel AHLs as potent antiproliferative agents
作者:Jing-Li Ren、Xu-Yao Zhang、Bin Yu、Xi-Xin Wang、Kun-Peng Shao、Xiao-Ge Zhu、Hong-Min Liu
DOI:10.1016/j.ejmech.2015.02.026
日期:2015.3
Three series of novel AHL analogs were synthesized and evaluated for their in vitro cytotoxic activity against four human cancer cell lines. The SARs investigation indicated that AHLs with a terminal phenyl group, especially those with the chalcone scaffold had remarkably enhanced cytotoxicity than those with the hydrophobic side chains. Besides, some of these compounds were much more potent than 5-Fu and natural OdDHL. Through the detailed SARs discussions, we found that compounds 10a-k and 14 with the 4-amino chalcone scaffold showed excellent inhibition against all the tested cancer cell lines and were much more potent than 5-Fu and AHLs. Such scaffold may act as a template for further lead optimization. Compound 10i with a 3, 4, 5-trimethoxy group was the most potent one against all the tested cancer cell lines. Flow cytometry analysis indicated that analog lie induced the cellular apoptosis and cell cycle arrest of MCF-7 cells at G2/M phase in a concentration-and time-dependent manner. (C) 2015 Elsevier Masson SAS. All rights reserved.
Discovery of orally active chalcones as histone lysine specific demethylase 1 inhibitors for the treatment of leukaemia
Histone lysine specific demethylase 1 (LSD1) has emerged as an attractive molecule target for the discovery of potently anticancer drugs to treat leukaemia. In this study, a series of novel chalcone derivatives were designed, synthesised and evaluated for their inhibitory activities against LSD1 in vitro. Among all these compounds, D6 displayed the best LSD1 inhibitory activity with an IC50 value of
Novel 2‐[thio]acetamide linked quinazoline/1,2,4‐triazole/chalcone hybrids: Design, synthesis, and anticancer activity as EGFR inhibitors and apoptotic inducers
作者:Ahmed S. Abdelkhalek、Hend Kothayer、Mostafa K. Soltan、Samy M. Ibrahim、Samar S. Elbaramawi
DOI:10.1002/ardp.202300627
日期:——
Novel triazoloquinazolines carrying the 2-[thio]acetamide entity (4 and 5a–d) and triazoloquinazoline/chalcone hybrids incorporating the 2-[thio]acetamide linker (8a–b and 9a–f) were developed as anticancer candidates. NCI screening of the synthesized compounds at 10 μM concentration displayed growth inhibition not only up to 99.74% as observed for 9a but also a lethal effect could be achieved as stated