scholarly journals A Novel and Efficient Synthesis of [1,2,3]-Triazolyl Substituted Benzo[c]Coumarins and Evaluation of their Antimicrobial Activity

2016 ◽  
Vol 70 ◽  
pp. 1-11
Author(s):  
Neha N. Gohil ◽  
Kaushik N. Kundaliya ◽  
Dinkar I. Brahmbhatt
Keyword(s):  
Antimicrobial Activity ◽  
Fungal Pathogens ◽  
Sodium Acetate ◽  
Efficient Synthesis ◽  
Mass Spectral Data ◽  
Pyridinium Bromide ◽  
Mass Spectral ◽  
H Nmr ◽  
Anti Fungal ◽  
C Nmr

A series of novel [1,2,3]-triazolyl substituted benzo [c] coumarins have been synthesized by reacting various 3-coumarinoyl methyl pyridinium bromide salts with 1-(5-methyl-1-phenyl-1H-1,2,3-triazol-4-yl) ethanones in the presence of sodium acetate in refluxing acetic acid. The structures of the synthesized compounds have been elucidated by IR,1H-NMR,13C-NMR and Mass spectral data. All the synthesized compounds have been screened for theirinvitroanti-bacterial and anti-fungal activities. Some of the compounds have been found to be active against some bacterial and fungal pathogens compared to standard drugs.

scholarly journals Synthesis and Characterization of Some Novel Coumarin Based 2-Pyridone Heterocycles with their Broad Spectrum Antimicrobial Potency

2016 ◽  
Vol 66 ◽  
pp. 1-12 ◽  
Author(s):  
Nisheeth C. Desai ◽  
Tushar J. Karkar
Keyword(s):  
Antimicrobial Activity ◽  
Synthesis And Characterization ◽  
Bacterial Strains ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
H Nmr ◽  
Bacteria And Fungi ◽  
Broth Dilution ◽  
C Nmr

The synthesis of a novel series of 6-((arylidene) amino)-2-oxo-1-((1-(2-oxo-2H-chromen-3-yl) ethylidene) amino)-4-phenyl-1,2-dihydropyridine-3,5-dicarbonitriles 4a-o were synthesized and structures of compounds have been elucidated by IR,1H NMR,13C NMR and mass spectral data. Antimicrobial activity was measured against certain strains of bacteria and fungi by serial broth dilution. Evaluation of antimicrobial activity shown that the compounds (4g, 4j, 4k and 4o) were found to be most active against selected bacterial strains and compounds (4d, 4m and 4n) were found to be most active against selected fungal strains.

scholarly journals Synthesis and Antimicrobial Activity ofSome New 2-Substituted Benzothiazole Derivatives

2009 ◽  
Vol 6 (3) ◽  
pp. 775-779 ◽  
Author(s):  
B. Rajeeva ◽  
N. Srinivasulu ◽  
S. M. Shantakumar
Keyword(s):  
Antimicrobial Activity ◽  
Spectral Data ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Phosphoryl Chloride ◽  
Mass Spectral Data ◽  
Disc Diffusion Method ◽  
Mass Spectral ◽  
Benzothiazole Derivatives ◽  
H Nmr

Some new 2-(5-substituted-1,3,4-oxadiazole-2-yl)-1,3- benzothiazole(3a-j)were synthesized by refluxing benzothiazolyl carboxyhydrazide with different aryl acids in phosphoryl chloride. Structures of the synthesized compounds were established on the basis of1H NMR and Mass spectral data. The anti microbial activity of the synthesized compounds was evaluated by disc diffusion method.

scholarly journals Approach for the Synthesis of Potent Antimicrobials Containing Pyrazole, Pyrimidine and Morpholine Analogues

2016 ◽  
Vol 69 ◽  
pp. 87-96 ◽  
Author(s):  
Nisheeth C. Desai ◽  
Bonny Y. Patel ◽  
Bharti P. Dave
Keyword(s):  
Antimicrobial Activity ◽  
Dilution Method ◽  
Mass Spectral ◽  
H Nmr ◽  
Sar Studies ◽  
Mueller Hinton ◽  
Morpholine Derivatives ◽  
Mueller Hinton Broth ◽  
C Nmr

The present study is in the interest of some synthesized novel derivatives containing 4-(1,3-diphenyl-1H-pyrazol-4-yl)-N-(morpholinomethyl)-6-arylpyrimidin-2-amines pooled with different bio-active heterocycles such as pyrazole, pyrimidine and morpholine derivatives. The structures of newly synthesized compounds were elucidated by IR, 1H NMR, 13C NMR and mass spectral data. The synthesized compounds were evaluated for their in vitro antimicrobial activity against different bacterial and fungal strains using Mueller-Hinton Broth dilution method. On the basis of SAR studies, it was observed that the presence of electron withdrawing groups remarkably enhanced the antimicrobial activity of synthesized compounds.

scholarly journals Synthesis of New Bicyclic Hydroxamic Acids with Cytotoxic Activity

2018 ◽  
Vol 61 (4) ◽  
Author(s):  
Iker S. Escalona-Torres ◽  
Francisco Yuste ◽  
Rubén Sánchez-Obregón
Keyword(s):  
Cytotoxic Activity ◽  
Nitro Group ◽  
Cell Lines ◽  
Cancer Cell ◽  
Cancer Cell Lines ◽  
Hydroxamic Acids ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
H Nmr ◽  
C Nmr

Six new bicyclic hydroxamic acids were synthesized through an uncommon nitro group rearrangement between β-nitrostyrenes and dimedone. The structures of all the new synthesized compounds were confirmed using a combination of FTIR, <sup>1</sup>H NMR, <sup>13</sup>C NMR and mass spectral data. Likewise, the cytotoxic activity of the obtained products was evaluated in six different cancer cell lines. Two compounds showed significant potency on two cancer cell lines with IC50 between 9.31±0.1 and 23.38±0.9 μM.

scholarly journals Microwave assisted the short time clean synthesis of 1,3-Diketones as Building Blocks in Heterocyclic Synthesis: A Facile Synthesis and Antimicrobial Evaluation of New Dihydropyridine, 4H-Pyrane, Dihydropyridazine, Pyrimidine and Pyrazole derivatives

2019 ◽  
Author(s):  
mohamed ahmed abdelreheim ◽  
Ibrahim Saad Abdel Hafiz ◽  
Hend Saad Eldin Abdel Rady
Keyword(s):  
Antimicrobial Activity ◽  
Wide Spectrum ◽  
Building Blocks ◽  
Mycelial Fungi ◽  
Mass Spectral ◽  
H Nmr ◽  
Chemical Structures ◽  
Short Time ◽  
Anti Fungal

Abstract Background: According to literature survey, the compounds bearing naphthalene moiety can be used as medical preparations because of their wide spectrum of biological activity and low toxicity. In this study, a new series of azoles or azines were synthesized from the reaction of the key intermediate 1-(1-hydroxynaphthalen-2-yl)-3-phenylpropane-1,3-dione 3 with a variety of electrophilic and nucleophilic reagents under a variety of mild conditions. Results: The chemical structures of these compounds were confirmed by various spectroscopic methods such as (IR, 1H-NMR, 13C-NMR, mass spectral data and elemental analyses). Conclusions: The prepared compounds were screened in vitro for their antimicrobial activity against some species of Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis) and Gram-negative bacteria (Escherichia coli and Pseudomonas aeuroginosa). Anti-fungal activities of the compounds were tested against yeast and mycelial fungi,Candida albicans and Aspergillus flavus. The antimicrobial activity of this series was showed either weak or moderate activities.

scholarly journals Synthesis and Antimicrobial Activity of (2-Methoxy/2-Amino)-6-{4'-[(4'''-Chlorophenyl) (Phenyl) Methyl Amino] Phenyl}-4-Aryl Nicotinonitrile

2015 ◽  
Vol 49 ◽  
pp. 99-103
Author(s):  
J.V. Guna ◽  
V.N. Bhadani ◽  
H.D. Purohit ◽  
Dipak M. Purohit
Keyword(s):  
Antimicrobial Activity ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Spectral Data ◽  
Elemental Analysis ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
H Nmr ◽  
Bacteria And Fungi ◽  
Layer Chromatography

2- Methoxy – 6 - {4' - [(4'''- Chlorophenyl) (phenyl) methyl amino] phenyl} - 4 - aryl nicotinonitrile (3a-3l) and 2-Amino-6-{4'-[(4'''-Chlorophenyl)(phenyl)methyl amino]phenyl}-4-aryl nicotinonitrile (4a-4l) have been synthesized. The products have been assayed for their antimicrobial activity against Gram +ve, Gram -ve bacteria and fungi. The structure of the products has been elucidated by IR, 1H-NMR, mass spectral data, elemental analysis and thin layer chromatography.

scholarly journals Microwave assisted synthesis of some new coumarin-pyrazoline hybrids and their antimicrobial activity

2015 ◽  
Vol 80 (3) ◽  
pp. 305-313 ◽  
Author(s):  
Dongamanti Ashok ◽  
Bommidi Lakshmi ◽  
Sidda Ravi ◽  
Arram Ganesh
Keyword(s):  
Antimicrobial Activity ◽  
Sodium Acetate ◽  
Pathogenic Bacteria ◽  
Conventional Heating ◽  
Microwave Assisted Synthesis ◽  
Good Activity ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
Microwave Assisted ◽  
Bacteria And Fungi

A series of pyrazolines 4a-g have been synthesized by Michael addition of chalcones 3a-g with hydrazine hydrate in presence of sodium acetate under conventional heating and microwave irradiation. Structures of the newly synthesized chalcones 3a-g and pyrazolines 4a-g have been established on the basis of IR, 1H & 13C NMR and mass spectral data. All the synthesized compounds were screened for their antimicrobial activity. Some of the compounds shown very good activity compared to standard drugs against all pathogenic bacteria and fungi.

scholarly journals Synthesis and Biological Evaluation of Some Novel 1, 3, 5-Trisubstituted Pyrazolines

2010 ◽  
Vol 7 (1) ◽  
pp. 295-298 ◽  
Author(s):  
B. C. Revanasiddappa ◽  
R. Nagendra Rao ◽  
E. V. S. Subrahmanyam ◽  
D. Satyanarayana
Keyword(s):  
Antimicrobial Activity ◽  
Acetic Acid ◽  
Spectral Data ◽  
Glacial Acetic Acid ◽  
Biological Evaluation ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
H Nmr ◽  
Synthesis And Biological Evaluation

A new series of chalcones (3a-j) were synthesized by condensation of simple aldehydes with substituted acetophenones in presence of alkali. The resulted chalcones upon cyclization in presence of glacial acetic acid with isoniazid (INH) will yields the title compounds (4a-j). The newly synthesized compounds were assigned on the basis of IR,1H NMR, and Mass spectral data. All the final compounds were evaluated for theirin vitroantimicrobial activity.

scholarly journals Synthesis, Characterization, and Biological Evaluation of Some New Functionalized Terphenyl Derivatives

2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
Seranthimata Samshuddin ◽  
Badiadka Narayana ◽  
Balladka Kunhanna Sarojini ◽  
Divya N. Shetty ◽  
Nalilu Suchetha Kumari
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Spectral Data ◽  
Antioxidant Properties ◽  
Biological Evaluation ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
H Nmr

New functionalized terphenyl derivatives incorporating various heterocyclic rings are prepared by using 4,4′′-difluoro-5′-hydroxy-1,1′:3′,1′′-terphenyl-4′-carbohydrazide as a key intermediate derived from 4,4′-difluoro chalcone, a versatile synthone. All the derivatives are characterized by 1H NMR, IR, and mass spectral data. All the synthesized products are screened for their in vitro antimicrobial and antioxidant properties. The majority of the tested compounds exhibited significant antioxidant activity and some of them showed good antimicrobial activity.

Synthesis, antiviral, cytotoxicity and antitumor evaluations of A4 type of porphyrin derivatives

2015 ◽  
Vol 19 (06) ◽  
pp. 753-768 ◽  
Author(s):  
Ahmed A. Fadda ◽  
Rasha E. El-Mekawy ◽  
Ahmed I. El-Shafei
Keyword(s):  
Spectral Data ◽  
Moderate Degree ◽  
Tumor Cell Lines ◽  
Mass Spectral Data ◽  
Mass Spectral ◽  
H Nmr ◽  
Porphyrin Derivatives ◽  
Hiv 1 ◽  
C Nmr ◽  
Hsv 1

This manuscript describes the synthesis of a new series of porphyrin structures 4a–4m, 7, 9, 12 and 14. These structures were investigated against two types of viruses such as HIV-1 and HSV-1. Also they were screened for their antitumor activity. Among all tested compounds, it was found that compound 4b showed a high activity against HIV-1 and HSV-1 and against four different tumor cell lines. Most of the tested compounds showed a moderate degree of a potent antimicrobial activity. The structure of these compounds was confirmed on the basis of their analytical and spectral data such as UV-vis, IR, 13 C NMR, 1 H NMR spectroscopy and mass spectral data.

Sign in / Sign up

Export Citation Format

Share Document