Synthesis, silver (I) extraction and silver (I) binding studies of novel N1,N3-bis(2-(benzylthio)ethyl)propanediamide derivatives
作者:Abiodun D. Aderibigbe、Andrew J. Clark
DOI:10.1007/s11696-020-01307-x
日期:2021.1
yields and tested for Ag + extraction from ternary aqueous solutions also containing Cu 2+ and Pb 2+ following a well-established solventextraction protocol. It was observed that electronics effects at the 4-aryl position in the propanediamide (or malondiamide) derivatives had a significant effect on the selectivity, but little effect on the efficiency of Ag + extraction with the 4-methoxy analogue
摘要 溶剂或液-液萃取是一种非常有价值的技术,可用于从水相中选择性回收金属,因为它易于操作且周转时间短。带有软供体原子(包括氮和硫)的配体是选择性银回收的理想候选者,因为它们更倾向于银结合。在此,以低至高产率制备了具有硫和氮供体原子的新型 N 1 , N 3 -双(2-(苄硫基)乙基)丙二酰胺衍生物,并测试了从同样含有 Cu 2+ 和 Pb 的三元水溶液中提取 Ag + 2+ 遵循完善的溶剂萃取方案。观察到丙二酰胺(或丙二酰胺)衍生物中 4-芳基位置的电子效应对选择性有显着影响,但对Ag + 提取效率的影响很小,4-甲氧基类似物被证明是最具选择性的。硫原子α位二甲基取代提供的空间位阻对Ag + 的提取效率和选择性有负面影响,而亚甲基中心的二乙基空间位阻降低了选择性,但提高了Ag + 的提取效率。详细的结合研究表明,其中一种缺乏电子和空间位阻基团的丙二酰胺衍生物以 1:1 的方式研究了配位的
Furan-carboxamide derivatives as novel inhibitors of lethal H5N1 influenza A viruses
In this study, we reported the synthesis and biological characterization of a novel series of furan-carboxamide derivatives that were potent inhibitors of the influenza A H5N1 virus. The systematic structure–activity relationship (SAR) studies demonstrated that the 2,5-dimethyl-substituted heterocyclic moiety (furan or thiophene) had significant influence on the anti-influenza activity. In particular
Synthesis and biological activities of novel trifluoromethylpyridine amide derivatives containing sulfur moieties
作者:S. X. Guo、F. He、A. L. Dai、R. F. Zhang、S. H. Chen、J. Wu
DOI:10.1039/d0ra07301f
日期:——
A series of trifluoromethylpyridine amide derivativescontaining sulfur moieties (thioether, sulfone and sulfoxide) was designed and synthesized. Their antibacterial activities against Xanthomonas oryzae pv. oryzae (Xoo), Ralstonia solanacearum (R. solanacearum) and insecticidal activities against P. xylostella were evaluated. Notably, the half-maximal effective concentration (EC50) value of sulfone-containing
设计并合成了一系列含硫基团(硫醚、砜和亚砜)的三氟甲基吡啶酰胺衍生物。它们对米黄单胞菌(Xanthomonas oryzae pv. ) 的抗菌活性。评估了米曲霉( Xoo )、青枯雷尔斯顿菌( R. solanacearum ) 和针对小菜蛾的杀虫活性。值得注意的是,含砜化合物F10相对于Xoo的半最大有效浓度(EC 50 )值为83 mg L -1,优于商业噻二唑铜(97 mg L -1)和双噻唑(112 mg L -1 ) 。 −1 )。含硫醚化合物E1、E3、E5、E6、E10、E11和E13对青枯菌表现出更高的活性,EC 50值为40至78 mg L -1,远低于噻二唑铜(87 mg L -1)和双噻唑(124 mg L -1)。一般来说,大多数含砜化合物和含亚砜化合物对Xoo表现出比相应的含硫醚化合物更高的活性,但大多数含硫醚化合物对青枯菌具有更高的抗菌活性。此外,标题化合物E