Synthesis of Functionalized Organoselenium Materials: Selenides and Diselenides Containing Cholesterol
作者:Tiago E. Frizon、Jamal Rafique、Sumbal Saba、Ivan H. Bechtold、Hugo Gallardo、Antonio L. Braga
DOI:10.1002/ejoc.201500124
日期:2015.6
A simple and efficient procedure for the synthesis of three new series of chalcogen liquid crystals, based on selenides and diselenides, containingcholesterol in their structure, is described. Thermal and liquid crystalline properties were investigated by POM, DSC, TGA and XRD scattering. Six of the nine molecules synthesized showed liquid crystal properties, with smectic mesomorphism. All the compounds
Investigation of synergistic antimicrobial effects of the drug combinations of meropenem and 1,2-benzisoselenazol-3(2H)-one derivatives on carbapenem-resistant Enterobacteriaceae producing NDM-1
作者:Wen Bin Jin、Chen Xu、Qipeng Cheng、Xiao Lin Qi、Wei Gao、Zhiwei Zheng、Edward W.C. Chan、Yun-Chung Leung、Tak Hang Chan、Kwok-Yin Wong、Sheng Chen、Kin-Fai Chan
DOI:10.1016/j.ejmech.2018.06.007
日期:2018.7
Enterobacteriaceae isolates was examined. Drug combination assays indicated that these derivatives exhibited synergistic antimicrobial activity when used along with meropenem, effectively restoring the activity of carbapenems against the resistant strains tested in a Galleria mellonella larvae in vivo infection model. The mode of inhibition of one compound, namely 11_a38, which was depicted when tested on the purified
[EN] 1,2-BENZISOSELENAZOL-3(2H)-ONE AND 1,2-BENZISOTHIAZOL-3(2H)-ONE DERIVATIVES AS BETA-LACTAM ANTIBIOTIC ADJUVANTS<br/>[FR] DÉRIVÉS DE 1,2-BENZISOSÉLÉNAZOL-3(2H)-ONE ET DE 1,2-BENZISOTHIAZOL-3(2H)-ONE UTILISÉS COMME ADJUVANTS D'ANTIBIOTIQUES BÊTA-LACTAME
申请人:UNIV HONG KONG POLYTECHNIC
公开号:WO2019174279A1
公开(公告)日:2019-09-19
Provided herein are compositions and methods useful in the treatment of beta-lactam antibiotic resistant bacteria.
本文提供了在治疗β-内酰胺类抗生素耐药细菌方面有用的组合物和方法。
Diselenides and Allyl Selenides as Glutathione Peroxidase Mimetics. Remarkable Activity of Cyclic Seleninates Produced in Situ by the Oxidation of Allyl ω-Hydroxyalkyl Selenides
作者:Thomas G. Back、Ziad Moussa
DOI:10.1021/ja0357588
日期:2003.11.1
generated 1,2-oxaselenolane Se-oxide (31) in situ by a series of oxidation and [2,3]sigmatropic rearrangement steps. The remarkably active cyclic seleninate 31 proved to be the true catalyst, reacting with the thiol via a postulated mechanism in which the thioseleninate 32 is first produced, followed by further thiolysis to selenenic acid 33 and oxidation-dehydration to regenerate 31. In contrast to catalysis
Synthesis and biological evaluation of new nitrogen-containing diselenides
作者:Vanessa Nascimento、Natasha L. Ferreira、Rômulo F.S. Canto、Karen L. Schott、Emily P. Waczuk、Luca Sancineto、Claudio Santi、João B.T. Rocha、Antonio L. Braga
DOI:10.1016/j.ejmech.2014.09.022
日期:2014.11
chronic human diseases. Herein, we reported the synthesis of new nitrogen-containing diselenides by a simple and efficient synthetic route. The products were obtained in good to excellent yields and their identification and characterization were achieved by NMR and HRMS techniques. The new derivatives may represent promising structures with different biological activities, which can act against oxidative
为了开发新药,已经对有机硒化合物的抗氧化特性进行了广泛研究,因为氧化应激可导致多种慢性人类疾病。在本文中,我们报道了通过简单有效的合成途径合成新的含氮二硒化物。获得的产物的收率高至优异,并且通过NMR和HRMS技术实现了它们的鉴定和表征。新的衍生物可能代表具有不同生物活性的有前途的结构,这些结构可以通过多种作用机理来抵抗氧化应激。新合成化合物的谷胱甘肽过氧化物酶样测定(GPx样活性)表明它们还原了H 2 O 2。牺牲PhSH来浇水。用二硒化物2b可获得最好的结果,二硒化物2b的活性是标准有机硒药物依布硒仑的9倍,相反,该化合物不会被肝TrxR还原。所有这些新化合物均能抑制Fe(II)诱导的TBARS。