具有四个一元二齿配体L 1 H [2-(5-氟-2-二氢-2-氧-2-氧-1 H-吲哚-3-亚烷基)肼甲酰胺],L 2 H [2- (5-氟-2-二氢-2-氧-1 H-吲哚-3-亚烷基)肼甲硫代酰胺],L 3 H [2-(5-溴-2-二氢-2-氧-2-氧-1 H-吲哚-3 -配体与MnCl 2 ·4H 2配位合成了L- 4 H [2-亚甲基]肼甲酰胺]和L 4 H [2-(5-溴-2-二氢-2-氧代-1 H-吲哚-3-亚甲基)肼甲硫酰胺]在甲醇中摩尔比为1:1和1:2。Schiff碱配体和络合物的特征在于元素分析,熔点,分子量,IR,1 H和13 C NMR,UV-Vis,EPR和质谱以及X射线粉末衍射图。根据光谱数据,提出了所有合成金属配合物的四面体几何形状。在体外测试了配体和复合物对细菌(大肠杆菌和金黄色葡萄球菌)和真菌(半镰刀菌和黄曲霉)的抵抗力。)表明它们对所有检测的微生物菌株均具
具有四个一元二齿配体L 1 H [2-(5-氟-2-二氢-2-氧-2-氧-1 H-吲哚-3-亚烷基)肼甲酰胺],L 2 H [2- (5-氟-2-二氢-2-氧-1 H-吲哚-3-亚烷基)肼甲硫代酰胺],L 3 H [2-(5-溴-2-二氢-2-氧-2-氧-1 H-吲哚-3 -配体与MnCl 2 ·4H 2配位合成了L- 4 H [2-亚甲基]肼甲酰胺]和L 4 H [2-(5-溴-2-二氢-2-氧代-1 H-吲哚-3-亚甲基)肼甲硫酰胺]在甲醇中摩尔比为1:1和1:2。Schiff碱配体和络合物的特征在于元素分析,熔点,分子量,IR,1 H和13 C NMR,UV-Vis,EPR和质谱以及X射线粉末衍射图。根据光谱数据,提出了所有合成金属配合物的四面体几何形状。在体外测试了配体和复合物对细菌(大肠杆菌和金黄色葡萄球菌)和真菌(半镰刀菌和黄曲霉)的抵抗力。)表明它们对所有检测的微生物菌株均具
Synthesis and antibacterial activity of Schiff bases of 5-substituted isatins
作者:Kamaleddin Haj Mohammad Ebrahim Tehrani、Maryam Hashemi、Maryam Hassan、Farzad Kobarfard、Shohreh Mohebbi
DOI:10.1016/j.cclet.2015.10.027
日期:2016.2
Abstract Based on the existing reports on the bioactive isatin derivatives, a number of Schiff bases were synthesized by reacting 5-substituted isatins with bioactive amines/hydrazides and their structures were confirmed using spectroscopic methods such as NMR, IR and massspectrometry. Furthermore, N -benzylation of isatin followed by the Schiff base formation furnished a new series of compounds (
8-OCH3 ciprofloxacin methylene and ethylene isatin derivatives with remarkable improvement in lipophilicity were synthesized in this study. These derivatives were evaluated for their in vitroactivity against some mycobacteria. All of the synthesized compounds were less active than the parent 8-OCH3 ciprofloxacin against Mycobacteriumsmegmatis CMCC 93202, but most of the methylene isatin derivatives
Sixteen 7-substituted gatifloxacin derivatives were synthesized and evaluated for antimycobacterial activity in vitro and in vivo against Mycobacterium tuberculosis H37Rv (MTB) and multi-drug resistant M. tuberculosis (MDR-TB), and also tested for the ability to inhibit the supercoiling activity of DNA gyrase from M. tuberculosis. Among the synthesized compounds, 1-cyclopropyl-6-fluoro-8-methoxy-7-[[[N-4-[I'-(5-isatinyl-beta-semicarbazo)]methyl]3-methyl]N-1-piperazinyl]-4-oxo-1,4-dihydro-3-quinoline carboxylic acid (3d) was found to be the most active compound in vitro with an MIC of 0.0125 mu g/mL against MTB and MTR-TB. In the in vivo animal model 3d decreased the bacterial load in lung and spleen tissues with 3.62- and 3.76-log 10 protections, respectively. Compound 3d was also found to be equally active as gatifloxacin in the inhibition of the supercoiling activity of wild-type M. tuberculosis DNA gyrase with an IC50 of 3.0 mu g/mL. The results demonstrate the potential and importance of developing new quinolone derivatives against mycobacterial infections. (c) 2006 Elsevier Ltd. All rights reserved.
Manganese(II) complexes of biological relevance: Synthesis and spectroscopic characterization of novel manganese(II) complexes with monobasic bidentate ligands derived from halo-substituted 1H-indole-2,3-diones
作者:S. Sharma、R. Meena、Y. Satyawana、N. Fahmi
DOI:10.1134/s1070363216120446
日期:2016.12
synthesized metal complexes. The ligands and complexes were tested in vitro against bacteria (Escherichia coli and Staphylococcus aureus) and fungi (Fusarium semitectum and Aspergillus flavus) to show that they were active against all the microbial strains examined, and the metal complexes were more active in comparison with the ligands. DNA cleavage activity of the complexes was examined by gel electrophoresis
具有四个一元二齿配体L 1 H [2-(5-氟-2-二氢-2-氧-2-氧-1 H-吲哚-3-亚烷基)肼甲酰胺],L 2 H [2- (5-氟-2-二氢-2-氧-1 H-吲哚-3-亚烷基)肼甲硫代酰胺],L 3 H [2-(5-溴-2-二氢-2-氧-2-氧-1 H-吲哚-3 -配体与MnCl 2 ·4H 2配位合成了L- 4 H [2-亚甲基]肼甲酰胺]和L 4 H [2-(5-溴-2-二氢-2-氧代-1 H-吲哚-3-亚甲基)肼甲硫酰胺]在甲醇中摩尔比为1:1和1:2。Schiff碱配体和络合物的特征在于元素分析,熔点,分子量,IR,1 H和13 C NMR,UV-Vis,EPR和质谱以及X射线粉末衍射图。根据光谱数据,提出了所有合成金属配合物的四面体几何形状。在体外测试了配体和复合物对细菌(大肠杆菌和金黄色葡萄球菌)和真菌(半镰刀菌和黄曲霉)的抵抗力。)表明它们对所有检测的微生物菌株均具