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Schiff-base

Synthesis, characterization and antibacterial activities of Zn(II) and Cd(II) complexes of a quinazoline-4(3H)-one Schiff base

Synthesis, characterization and antibacterial activities of Zn(II) and Cd(II) complexes of a quinazoline-4(3H)-one Schiff base

... quinazoline Schiff base and its complexes with transition ...the Schiff base ligand derived from quinazolin-4-(3H)-one and 2-(2-formylphenoxy) acetic acid and its mononuclear complexes with ...

9

Synthesis and Characterization of Dinuclear Metal Complexes Stabilized by Tetradentate Schiff Base Ligands

Synthesis and Characterization of Dinuclear Metal Complexes Stabilized by Tetradentate Schiff Base Ligands

... Preparation of the Schiff base compounds: About 0.40 mol of acetylacetone or acetylacetanilide was added to 25 mL of absolute ethanol along with 0.20 mol of hydrazine. After adding a few drops of glacial ...

6

Schiff base switch II precedes the retinal thermal isomerization in the photocycle of bacteriorhodopsin.

Schiff base switch II precedes the retinal thermal isomerization in the photocycle of bacteriorhodopsin.

... Bacteriorhodopsin (BR) functions as a light-activated proton pump [1,2]. Its catalytic activity is dependent on a retinal chromophore that is covalently bound to residue K216 via a Schiff base (SB) C15 = NZ ...

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HOMO- AND HETERONUCLEAR COMPLEXES OF COPPER (II) WITH SCHIFF BASE OBTAINED ON THE BASE OF 2-HYDROXY-3-CARBOXYNAPHTALDEHYDE

HOMO- AND HETERONUCLEAR COMPLEXES OF COPPER (II) WITH SCHIFF BASE OBTAINED ON THE BASE OF 2-HYDROXY-3-CARBOXYNAPHTALDEHYDE

... vibrations of hydroxy ν(OH), carboxy ν(COOH), and azomethine (C=N) groups [22]. They characterize the formation of the Schiff base. The comparison of the IR-spectra of the ligand and complex exhibits some ...

4

SYNTHESIS, CHARACTERIZATION AND APPLICATIONS OF NEW SCHIFF BASE FLUORESCENT CHEMOSENSORS FOR METAL AND DNA INTERACTIONS: CONVENTIONAL AND “GREEN” APPROACHES

SYNTHESIS, CHARACTERIZATION AND APPLICATIONS OF NEW SCHIFF BASE FLUORESCENT CHEMOSENSORS FOR METAL AND DNA INTERACTIONS: CONVENTIONAL AND “GREEN” APPROACHES

... self-organized Schiff- base host molecules has attracted much attention ...acyclic Schiff-base chemosensors based on polyoxa and/or oxa-aza [3], polyaza [4], and azathia [5] as receptor units, ...

227

A novel approach toward the synthesis of some new tridentate Schiff bases from anil-like compounds

A novel approach toward the synthesis of some new tridentate Schiff bases from anil-like compounds

... It was suggested that a weak intramolecular hydrogen bond (O–H…N) formed and resonance caused only deshielding of chemical shift of the OH proton. In addition, in the spectrum of compound 2b, an NH proton at about δ 7.0 ...

9

Insights into mechanisms and proteomic characterisation of Pseudomonas aeruginosa adaptation to a novel antimicrobial substance.

Insights into mechanisms and proteomic characterisation of Pseudomonas aeruginosa adaptation to a novel antimicrobial substance.

... Antibiotic resistance has been reported since the introduction of synthetic antibiotics. Bacteria, such as one of the most common nosocomial pathogens P. aeruginosa, adapt quickly to changing environmental conditions, ...

10

PROPRIEDADES VIBRACIONAIS DA BASE DE SCHIFF C 20H 21N3O2 E DO DERI- VADO DO ÁCIDO DE MELDRUM C 12H 11 ClN

PROPRIEDADES VIBRACIONAIS DA BASE DE SCHIFF C 20H 21N3O2 E DO DERI- VADO DO ÁCIDO DE MELDRUM C 12H 11 ClN

... density functional theory (DFT) calculations, implemented by the exchange and correlation function B3LYP and the basic function 6-31 G(d, p) with the aid of the Gaussian 09 program. The computational calculations ...

89

Microwave synthesis, spectral, thermal, and antimicrobial activities of some transition metal complexes involving 5-bromosalicylaldehyde moiety

Microwave synthesis, spectral, thermal, and antimicrobial activities of some transition metal complexes involving 5-bromosalicylaldehyde moiety

... investigated Schiff base and their metal complexes was tested against the bacteria Escherichia coli and Staphylococcus aureus by disc diffusion method using nutrient agar as medium and streptomycin as ...

12

J. Braz. Chem. Soc.  vol.28 número5

J. Braz. Chem. Soc. vol.28 número5

... Schiff base ligand, 2-(2-(pyridine-2-ylmethyleneamino)ethylthio)-N-(thiophene-2-ylmethylene) aniline (L) was prepared via [1 + 1] condensation of pyridine-2-carbaldehyde with this ...unsymmetric ...

7

Synthesis, characterization and biological evaluation of zinc(ii) complexes with phenanthroline derivatives and s-methyl dithiocarbazate schiff bases

Synthesis, characterization and biological evaluation of zinc(ii) complexes with phenanthroline derivatives and s-methyl dithiocarbazate schiff bases

... Synthesis and characterization of Co(II), Cu(II), Cd(II), Zn(II) and Ni(Ii) complexes of Schiff base ligand derived from S-benzyldithiocarbazate (Sbdtc) and acetophenon[r] ...

117

Complexos de cobre(II) e oxovanádio(IV) com bases de Schiff Quirais: preparação, caracterização e alguns ensaios catalíticos

Complexos de cobre(II) e oxovanádio(IV) com bases de Schiff Quirais: preparação, caracterização e alguns ensaios catalíticos

... COPPER (II) AND OXOVANADIUM COMPLEXES WITH SCHIFF BASE CHIRAL: PREPARATION, CHARACTERIZATION AND SOME CATALYTIC ASSAYS. Salen complexes are an important class of coordination compounds, which have been used ...

145

Síntese e caracterização de complexos de base de schiff com níquel (ii) ancorados no material mesoporoso SBA-15

Síntese e caracterização de complexos de base de schiff com níquel (ii) ancorados no material mesoporoso SBA-15

... synthesized Schiff base with nickel (II) to be anchored in the functionalized SBA-15 3 – chloropropyltrimethoxysilane and a study of the thermal stability of these ...

93

CENTRO DE CIÊNCIAS EXATAS E TECNOLOGIA DEPARTAMENTO DE QUÍMICA PROGRAMA DE PÓS-GRADUAÇÃO EM QUÍMICA

CENTRO DE CIÊNCIAS EXATAS E TECNOLOGIA DEPARTAMENTO DE QUÍMICA PROGRAMA DE PÓS-GRADUAÇÃO EM QUÍMICA

... In search for inorganic compounds that act as mimetic models for the enzyme Catechol Oxidase, there were synthesized monometallic zirconium (IV) and zinc (II) complexes. The ligands used were tridentate Schiff ...

110

SYNTHESIS OF SULFONAMIDE BASED SCHIFF’S BASES AND THEIR BIOLOGICAL EVALUATION TOWARDS COLLETOTRICHUM GLOEOSPORIOIDES

SYNTHESIS OF SULFONAMIDE BASED SCHIFF’S BASES AND THEIR BIOLOGICAL EVALUATION TOWARDS COLLETOTRICHUM GLOEOSPORIOIDES

... The Schiff base was prepared by reaction of equimolar (0.01 M) of 4-amino benzene sulfonamide and substituted aromatic aldehydes were transferred to a clean and dry Teflon vessel, and triturated to form ...

3

Estudo do perfil farmacológico de bases de Schiff e de suas interações com metais

Estudo do perfil farmacológico de bases de Schiff e de suas interações com metais

... Altogether, the effects induced by semicarbazide in the experimental models of pain and inflammation suggest that this compound may contribute to the anti-nociceptive and anti- inflammator[r] ...

188

Copper compounds (Schiff bases) as DNA-Interacting agents

Copper compounds (Schiff bases) as DNA-Interacting agents

... that Schiff bases coordinated to Cu(II) have antiproliferative and antibacterial activities, due to the properties of the ligands allied to the structural and electronic properties of metal coordination ...

75

Bases de Schiff com potenciais aplicações no tratamento da doença de Alzheimer e de osteoporose

Bases de Schiff com potenciais aplicações no tratamento da doença de Alzheimer e de osteoporose

... Os metais, como arsênio, ouro e ferro têm sido usados para tratar doenças desde a antiguidade 3 . No Egito, o cobre era usado para esterilizar água 3000 aC 4 e vários fármacos a base de ferro eram usados 1500 aC 5 ...

124

Contribuição para o conhecimento da tabela de vida da processionária do pinheiro (Thaumetopoea pityocampa Schiff.)

Contribuição para o conhecimento da tabela de vida da processionária do pinheiro (Thaumetopoea pityocampa Schiff.)

... During 1972-1973 the intracyclic variation of the Thammetopoea pityocampa Schiff. population on a Pinus pinaster Sol. stand at the «Herdade de Contador» (Pegões) has been studied. The cycle of the pest and that of ...

18

Estudos sobre o uso de NbCl5 como ácido de Lewis em reações de Povarov

Estudos sobre o uso de NbCl5 como ácido de Lewis em reações de Povarov

... acompanhamento das reações foram realizadas cromatografias em camada delgada, retirando-se alíquotas minuto a minuto da mistura reacional, verificando-se o consumo da base de Schiff utilizada. Os produtos ...

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