Due to the large number of ionic liquids （ILs） and their potential environmental risk, assessing the toxicity of ILs by ecotoxicological experiment only is insufficient. Quantitative structure- activity relationship...Due to the large number of ionic liquids （ILs） and their potential environmental risk, assessing the toxicity of ILs by ecotoxicological experiment only is insufficient. Quantitative structure- activity relationship （QSAR） has been proven to be a quick and effective method to estimate the viscosity, melting points, and even toxicity of ILs. In this work, the LC50 values of 30 imidazolium-based ILs were determined with Caenorhabditis elegans as a model animal. Four suitable molecular descriptors were selected on the basis of genetic function approximation algorithm to construct a QSAR model with an R^2 value of 0.938. The predicted lgLC50 in this work are in agreement with the experimental values, indicating that the model has good stability and predictive ability. Our study provides a valuable model to predict the potential toxicity of ILs with different sub-structures to the environment and human health.展开更多
A series of novel 2,6-dichloro-3,5-dinitrotoluene derivatives were designed, synthesized in the present study, and their antitumor activities against five cell lines（A431, HepG2, A549, HT-29 and HEK-293） were tested...A series of novel 2,6-dichloro-3,5-dinitrotoluene derivatives were designed, synthesized in the present study, and their antitumor activities against five cell lines（A431, HepG2, A549, HT-29 and HEK-293） were tested. Most of the compounds exhibited moderate-to-significant cytotoxicity and high selectivity against one or more cell lines in comparison with cisplatin. Studies on their preliminary structure-activity relationships（SARs） indicated that compounds containing phenyl（piperazin-1-yl） methanone groups, especially chlorine atom at 4-position of the phenyl ring, were more effective. Compound 4g was found to be the most potent derivative with IC_（50） values of 1.04, 3.20, 6.93, 4.10 and 20.15 μmol/L against A431, HepG2, A549, HT-29 and HEK-293 cell lines, respectively, which was better than positive control cisplatin, one of the most clinically used chemotherapeutic drugs.展开更多
基金This work was supported by the National Natural Science Foundation of China （No.21477121）, and the Fundamental Research Funds for the Central Universities for the support of this work. The numerical calculations were performed on the super computing system in the Supercomputing Center at the University of Science and Technology of China.
文摘Due to the large number of ionic liquids （ILs） and their potential environmental risk, assessing the toxicity of ILs by ecotoxicological experiment only is insufficient. Quantitative structure- activity relationship （QSAR） has been proven to be a quick and effective method to estimate the viscosity, melting points, and even toxicity of ILs. In this work, the LC50 values of 30 imidazolium-based ILs were determined with Caenorhabditis elegans as a model animal. Four suitable molecular descriptors were selected on the basis of genetic function approximation algorithm to construct a QSAR model with an R^2 value of 0.938. The predicted lgLC50 in this work are in agreement with the experimental values, indicating that the model has good stability and predictive ability. Our study provides a valuable model to predict the potential toxicity of ILs with different sub-structures to the environment and human health.
基金The Natural Science Foundation of Liaoning province(Grant No.20170540730)
文摘A series of novel 2,6-dichloro-3,5-dinitrotoluene derivatives were designed, synthesized in the present study, and their antitumor activities against five cell lines（A431, HepG2, A549, HT-29 and HEK-293） were tested. Most of the compounds exhibited moderate-to-significant cytotoxicity and high selectivity against one or more cell lines in comparison with cisplatin. Studies on their preliminary structure-activity relationships（SARs） indicated that compounds containing phenyl（piperazin-1-yl） methanone groups, especially chlorine atom at 4-position of the phenyl ring, were more effective. Compound 4g was found to be the most potent derivative with IC_（50） values of 1.04, 3.20, 6.93, 4.10 and 20.15 μmol/L against A431, HepG2, A549, HT-29 and HEK-293 cell lines, respectively, which was better than positive control cisplatin, one of the most clinically used chemotherapeutic drugs.
