One step hydrothermal green approach of CuO/Ag nanocomposites: analysis of structural, biological activities

2019 ◽  
Vol 6 (9) ◽  
pp. 095036 ◽  
Author(s):  
E Nandhakumar ◽  
P Priya ◽  
P Selvakumar ◽  
E Vaishnavi ◽  
A Sasikumar ◽  
...  
Keyword(s):  
Biological Activities ◽  
Green Approach ◽  
One Step

Synthesis of biologically active heterocyclic compounds from allenic and acetylenic nitriles and related compounds

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Marthe Carine Djuidje Fotsing ◽  
Dieudonné Njamen ◽  
Zacharias Tanee Fomum ◽  
Derek Tantoh Ndinteh
Keyword(s):  
Michael Addition ◽  
Heterocyclic Compounds ◽  
Biological Activities ◽  
Biologically Active ◽  
Polycyclic Compounds ◽  
One Step ◽  
Pharmaceutical Properties ◽  
Related Compounds ◽  
Acetylenic Acids ◽  
The Michael Addition

Abstract Cyclic and polycyclic compounds containing moieties such as imidazole, pyrazole, isoxazole, thiazoline, oxazine, indole, benzothiazole and benzoxazole benzimidazole are prized molecules because of the various pharmaceutical properties that they display. This led Prof. Landor and co-workers to engage in the synthesis of several of them such as alkylimidazolenes, oxazolines, thiazolines, pyrimidopyrimidines, pyridylpyrazoles, benzoxazines, quinolines, pyrimidobenzimidazoles and pyrimidobenzothiazolones. This review covers the synthesis of biologically active heterocyclic compounds by the Michael addition and the double Michael addition of various amines and diamines on allenic nitriles, acetylenic nitriles, hydroxyacetylenic nitriles, acetylenic acids and acetylenic aldehydes. The heterocycles were obtained in one step reaction and in most cases, did not give side products. A brief discussion on the biological activities of some heterocycles is also provided.

One-step green approach for synthesizing highly ordered pillaring materials via ultrafast transportation

2016 ◽  
Vol 124-125 ◽  
pp. 137-142 ◽  
Author(s):  
Qing-Qing Hao ◽  
Yong-Hong Song ◽  
Bingsen Zhang ◽  
Huan-Huan Yang ◽  
Jian-Gang Chen ◽  
...  
Keyword(s):  
Green Approach ◽  
One Step

scholarly journals A New Method for the Synthesis of 2-Substituted Benzoxazoles from 2-Nitrophenol Derivatives and Aldehydes  

2021 ◽  
Vol 31 (3) ◽  
pp. 43-46
Keyword(s):  
Biological Activities ◽  
Catalyst System ◽  
Biologically Active ◽  
New Method ◽  
Redox Catalyst ◽  
High Pressure High Temperature ◽  
One Step ◽  
High Yields ◽  
Strong Acids ◽  
Single Reaction

Benzoxazole derivatives are one of the compounds with many interesting biological activities. Conventional methods are often performed under complex conditions using strong acids, expensive metal catalysts, requiring high pressure, high temperature, and under microwave irradiation. In this study, we reported a new method of benzoxazole synthesis with redox catalyst using FeCl3.6H2O and sulfur. This is a suitable, efficient, readily available and environmentally friendly catalyst system for redox and condensation reactions in one step at 100 oC. Applying this new method, we have synthesized eight 2-arylbenzoxazole derivatives with high yields (calculated according to 2-nitrophenol). This research is an important step forward in the synthesis of biologically active compounds containing the benzoxazole framework from readily available starting materials in a single reaction.

scholarly journals 4-Aminobenzoic Acid Derivatives: Converting Folate Precursor to Antimicrobial and Cytotoxic Agents

Biomolecules ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 9 ◽  
Author(s):  
Martin Krátký ◽  
Klára Konečná ◽  
Jiří Janoušek ◽  
Michaela Brablíková ◽  
Ondřej Janďourek ◽  
...  
Keyword(s):  
Schiff Bases ◽  
Biological Activities ◽  
Aromatic Aldehydes ◽  
Antimycobacterial Activity ◽  
Cytotoxic Agents ◽  
Aminobenzoic Acid ◽  
Human Pathogens ◽  
Essential Nutrient ◽  
One Step ◽  
Imine Bond

4-aminobenzoic acid (PABA), an essential nutrient for many human pathogens, but dispensable for humans, and its derivatives have exhibited various biological activities. In this study, we combined two pharmacophores using a molecular hybridization approach: this vitamin-like molecule and various aromatic aldehydes, including salicylaldehydes and 5-nitrofurfural, via imine bond in one-step reaction. Resulting Schiff bases were screened as potential antimicrobial and cytotoxic agents. The simple chemical modification of non-toxic PABA resulted in constitution of antibacterial activity including inhibition of methicillin-resistant Staphylococcus aureus (minimum inhibitory concentrations, MIC, from 15.62 µM), moderate antimycobacterial activity (MIC ≥ 62.5 µM) and potent broad-spectrum antifungal properties (MIC of ≥ 7.81 µM). Some of the Schiff bases also exhibited notable cytotoxicity for cancer HepG2 cell line (IC50 ≥ 15.0 µM). Regarding aldehyde used for the derivatization of PABA, it is possible to tune up the particular activities and obtain derivatives with promising bioactivities.

One-Step Synthesis of Graphitic Carbon-Nitride doped with Black-Red Phosphorus as a Novel, Efficient and Free-Metal Bifunctional Catalyst and its Application for Electrochemical Overall Water Splitting

2021 ◽  
Author(s):  
Fatemeh Shiravani ◽  
Javad Tashkhourian ◽  
Behzad Haghighi
Keyword(s):  
Water Splitting ◽  
High Purity ◽  
Carbon Nitride ◽  
Sustainable Energy ◽  
Bifunctional Catalyst ◽  
Red Phosphorus ◽  
Green Approach ◽  
One Step ◽  
Free Metal ◽  
High Purity Hydrogen

Electrocatalytic water splitting has attracted widespread attention because it is the most efficient and green approach to produce high purity hydrogen as a clean and sustainable energy carrier. In this...

Studies on the catalytic activity of CuO/TiO2/ZnO ternary nanocomposites prepared via one step hydrothermal green approach

2019 ◽  
Vol 6 (12) ◽  
pp. 125043 ◽  
Author(s):  
Mathalai Sundaram C ◽  
Kalpana S ◽  
Rafi Ahamed S ◽  
Sivaganesan V ◽  
E Nandhakumar
Keyword(s):  
Catalytic Activity ◽  
Green Approach ◽  
One Step

Ultrasonic and microwave assisted extraction as rapid and efficient techniques for plant mediated synthesis of quantum dots: green synthesis, characterization of zinc telluride and comparison study of some biological activities

2019 ◽  
Vol 43 (38) ◽  
pp. 15126-15138 ◽  
Author(s):  
Zinab Moradi Alvand ◽  
Hamid Reza Rajabi ◽  
Ali Mirzaei ◽  
Asad Masoumiasl
Keyword(s):  
Quantum Dots ◽  
Green Synthesis ◽  
Biological Activities ◽  
Zinc Telluride ◽  
Microwave Assisted Extraction ◽  
Comparison Study ◽  
Microwave Assisted ◽  
Green Approach ◽  
Assisted Extraction

In this study, a simple, rapid, and efficient plant-mediated green approach was presented for the synthesis of stable and ultra-small zinc telluride quantum dots (ZnTe QDs) using the aqueous extract of the Ficus johannis plant.

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