A number of novel styryl epoxides, N‐substituted‐styryl‐ethanolamines, N‐mono and N,N′‐bis‐(2‐hydroxyethyl)‐cinnamamides ‐ analogues to the known radiosensitizers RSU‐ 1069, pimonidazole and etanidazole ‐ display selective hypoxicradiosensitizing activity. The styryl group, especially when substituted by electron withdrawing groups, was found to be bioisosteric to the nitroimidazolyl functionality
Design, Synthesis, and Anticancer Activity of Cinnamoylated Barbituric Acid Derivatives
作者:Yue Liu、Peng‐Xiao Li、Wen‐Wen Mu、Ya‐Lei Sun、Ren‐Min Liu、Jie Yang、Guo‐Yun Liu
DOI:10.1002/cbdv.202100809
日期:2022.2
spectrophotometry. The results revealed that introducing substitutions (CF3, OCF3, F) on the meta- of the benzyl ring of barbituricacidderivatives led to a considerable increase in the antiproliferative activities compared with that of corresponding ortho- and para-substituted barbituricacidderivatives. Mechanism investigation implied that the 1c could increase the ROS and MDA level, decrease the ratio of GSH/GSSG
Identification and Structure–Activity Relationships of Novel Compounds that Potentiate the Activities of Antibiotics in <i>Escherichia coli</i>
作者:Keith M. Haynes、Narges Abdali、Varsha Jhawar、Helen I. Zgurskaya、Jerry M. Parks、Adam T. Green、Jerome Baudry、Valentin V. Rybenkov、Jeremy C. Smith、John K. Walker
DOI:10.1021/acs.jmedchem.7b00453
日期:2017.7.27
In Gram-negative bacteria, effluxpumps are able to prevent effective cellular concentrations from being achieved for a number of antibiotics. Small molecule adjuvants that act as effluxpump inhibitors (EPIs) have the potential to reinvigorate existing antibiotics that are currently ineffective due to efflux mechanisms. Through a combination of rigorous experimental screening and in silico virtual
successful design of glutathione S-transferase (GST) inhibitors via a natural product-inspired and electrophilicity-based strategy. Based on this strategy, a novel piperlongumine analog (PL-13) bearing a para-trifluoromethyl group and an α-chlorine on its aromatic and lactam rings, respectively, surfaced as a promising GST inhibitor, thereby overcoming cisplatin resistance in lung cancer A549cells.
The potential role of the 5,6-dihydropyridin-2(1<i>H</i>)-one unit of piperlongumine on the anticancer activity
作者:Wen-Wen Mu、Peng-Xiao Li、Yue Liu、Jie Yang、Guo-Yun Liu
DOI:10.1039/d0ra08778e
日期:——
Piperlongumine (PL), a potent anticancer agent from the plant long pepper (Piper longum), contains the 5,6-dihydropyridin-2(1H)-one heterocyclic scaffold and cinnamoyl unit. In this paper, we synthesized a series of PL analogs and evaluated their cytotoxicity against cancer cells for the sake of exploring which pharmacophore plays a more potent role in enhancing the anticanceractivities of PL. These results