New antimicrobial agents: The synthesis of Schiff base polymers containing transition metals and their characterization and applications

2011 ◽  
Vol 122 (4) ◽  
pp. 2756-2764 ◽  
Author(s):  
Nahid Nishat ◽  
Raza Rasool ◽  
Shadma Parveen ◽  
Shamim Ahmad Khan
Keyword(s):  
Schiff Base ◽  
Transition Metals ◽  
Antimicrobial Agents ◽  
Schiff Base Polymers

scholarly journals Transition metal-catalyzed synthesis of spirooxindoles

RSC Advances ◽  
2021 ◽  
Vol 11 (13) ◽  
pp. 7146-7179
Author(s):  
P. V. Saranya ◽  
Mohan Neetha ◽  
Thaipparambil Aneeja ◽  
Gopinathan Anilkumar
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Antimicrobial Agents ◽  
Recent Advances ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Spirooxindoles are used as anticancer-, antiviral-, antimicrobial agents etc. The use of transition metals as catalysts for the synthesis of spirooxindoles is advancing rapidly. Here, we focus on recent advances in transition metal-catalyzed synthesis of spirooxindoles.

scholarly journals Synthesis and Evaluation of Schiff Bases of 4-Amino-5-(chlorine substituted phenyl)-4H-1,2,4-triazole-3-thione as Antimicrobial Agents

2020 ◽  
Vol 41 (1) ◽  
pp. 26-35
Author(s):  
Kishor Devkota ◽  
Govinda Pathak ◽  
Bhushan Shakya
Keyword(s):  
Schiff Base ◽  
Schiff Bases ◽  
Antimicrobial Agents ◽  
Triazole Ring ◽  
Antimicrobial Activities ◽  
Biologically Active ◽  
Spectral Techniques ◽  
Schiff Base Derivatives ◽  
Bacteria And Fungi ◽  
Different Strains

Triazole ring system has attracted a continuously growing interest of synthetic organic chemists and those dealing with the medicinal compounds due to its versatile potential to interact with biological systems. Schiff bases are also considered as one of the most biologically active compounds.  The aim of the present study was to synthesize new Schiff bases bearing triazole nucleus and to assess their antimicrobial activities. Four new Schiff base derivatives of 1,2,4-triazole-3-thione were synthesized by combining two different pharmacophores viz. triazole nucleus and Schiff base moiety and were characterized by spectral techniques (UV, FT-IR, and NMR). The Schiff bases were evaluated for antibacterial (Staphylococcus aureus, Escherichia coli, and Klebsiella pneumoniae) and antifungal (Candida albicans) activities. The synthesized compounds exhibited good to moderate activities against different strains of bacteria and fungi tested.

Synthesis of One-Dimensional Schiff Base Polymers that Contain an Oligothiophene Building Block on the Graphite Surface

2015 ◽  
Vol 21 (18) ◽  
pp. 6898-6905 ◽  
Author(s):  
Xiu-Ling Sun ◽  
Li-Xia Fan ◽  
Yong-Jing Yang ◽  
Zongxia Guo ◽  
Wei Quan Tian ◽  
...  
Keyword(s):  
Schiff Base ◽  
Building Block ◽  
Graphite Surface ◽  
One Dimensional ◽  
Schiff Base Polymers

scholarly journals Zr(IV), La(III), and Ce(IV) Chelates with 2-[(4-[(Z)-1-(2-Hydroxyphenyl)ethylidene]aminobutyl)-ethanimidoyl]phenol: Synthesis, Spectroscopic Characterization, and Antimicrobial Studies

2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
M. M. El-ajaily ◽  
H. A. Abdullah ◽  
Ahmed Al-janga ◽  
E. E. Saad ◽  
A. A. Maihub
Keyword(s):  
Schiff Base ◽  
Spectral Data ◽  
Schiff Base Ligand ◽  
Active Sites ◽  
Antimicrobial Agents ◽  
Spectroscopic Characterization ◽  
Metal Chelates ◽  
Molar Ratio ◽  
Bacterial Strains ◽  
Activity Data

La(III), Zr(IV), and Ce(IV) chelates of 2-[(4-[(Z)-1-(2-hydroxyphenyl)ethylidene]aminobutyl)-ethanimidoyl]phenol were synthesized and characterized by using several physical techniques. The Schiff base was obtained by refluxing of o-hydroxyacetophenone with 1,4-butanediamine in 2 : 1 molar ratio. The CHN elemental analysis results showed the formation of the Schiff base and the chelates has been found to be in 1 : 1 [M : L] ratio. The molar conductance measurements revealed that all the chelates are nonelectrolytes. Structural elucidations of the ligand and its chelates were based on compatible analytical and spectroscopic evidences. The infrared spectral data revealed that the Schiff base coordinates to the metal ions through active sites which are –OH and –C=N groups. According to the electronic spectral data, an octahedral geometry was proposed for the chelates. The synthesized ligand and its metal chelates were screened for their antimicrobial activity against two Gram negative (Escherichia coli, Salmonella kentucky) and two Gram positive (Lactobacillus fermentum, Streptococcus faecalis) bacterial strains, unicellular fungi (Fusarium solani), and filamentous fungi (Aspergillus niger). The activity data showed that the metal chelates have antibacterial and antifungal activity more than the parent Schiff base ligand against one or more bacterial or fungi species. The results also indicated that the metal chelates are higher sensitive antimicrobial agents as compared to the Schiff base ligand.

Ratiometric electrochemical glucose sensor based on electroactive Schiff base polymers

2019 ◽  
Vol 285 ◽  
pp. 264-270 ◽  
Author(s):  
Linyu Wang ◽  
Mengli Xu ◽  
Yi Xie ◽  
Chenchen Qian ◽  
Wei Ma ◽  
...  
Keyword(s):  
Schiff Base ◽  
Glucose Sensor ◽  
Schiff Base Polymers
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