scholarly journals Synthesis and Biological evaluation of some new 2-thioxoimidazolidin-4-one derivatives (part II)

2018 ◽  
Vol 29 (1) ◽  
pp. 79 ◽  
Author(s):  
Amjad Gali
Keyword(s):  
Antibacterial Activity ◽  
1H Nmr ◽  
Heterocyclic Compounds ◽  
Biological Evaluation ◽  
Ethyl Chloroacetate ◽  
In Series ◽  
Cyclic Compounds ◽  
Synthesis And Biological Evaluation

In the present work adifferent of new heterocyclic  compounds were synthesized by reaction of thiosemicarbazide with tow aldehydes (4-bromo benzaldehyde,2-chloro benzaldehyde). the reacting `of compounds(1,2)  with ethyl chloroacetate to give 3-[(arylidene)amino]-2-sulfanyl-3,5-dihydro-4H-imidazol-4-one (3,4) which treating with defferent aldehydes togive chalcones  . the compound (3) reacted with ethyl aceto acetate to give ethyl 4-aryl-1-[(4-bromo benzylidene)amino]-6-oxo-2-sulfanyl-3a,4,5,6,7,7a-hexahydro-1H-benzimidazole-5-carboxylate,and in series of reaction converted into a variety of derivatives. The prepared compounds were characterized by 1H NMR and FTIR spectroscopy.further more antibacterial activity of some the prepared  new cyclic compounds were evaluated against three types of bacteria

Synthesis and Biological Evaluation of Various New Substituted 1,3,4-oxadiazole-2-thiols

2008 ◽  
Vol 59 (4) ◽  
Author(s):  
Gabriela Laura Almajan ◽  
Stefania Felicia Barbuceanu ◽  
Ioana Saramet ◽  
Mihaela Dinu ◽  
Cristian Vasile Doicin ◽  
...  
Keyword(s):  
Biological Activity ◽  
Plant Growth ◽  
1H Nmr ◽  
Elemental Analysis ◽  
13C Nmr ◽  
Biological Evaluation ◽  
Ethyl Chloroacetate ◽  
Low Concentrations ◽  
Synthesis And Biological Evaluation

5-[4-(4X-phenylsulfonyl)phenyl]-1,3,4-oxadiazole-2-thiols, X=H, Cl, Br, reacted with ethyl chloroacetate to give S-alkylated compounds. Aminomethylation of the thione form of oxadiazoles yielded N(3)-derivatives. All the products have been characterized by elemental analysis, IR, 1H-NMR and 13C-NMR. The plant-growth regulating effects of the title compounds were examined. From the biological activity results, we found that most compounds showed weak stimulatory activities at low concentrations.

ROOM TEMPERATURE SYNTHESIS AND BIOLOGICAL EVALUATION OF SOME 2,5-DISUBSTITUTED-1,3,4-OXADIAZOLES

INDIAN DRUGS ◽  
2017 ◽  
Vol 54 (05) ◽  
pp. 11-15
Author(s):  
R. R Somani ◽  
◽  
P. K Chaskar ◽  
P. M. Patil
Keyword(s):  
Heterocyclic Compounds ◽  
Room Temperature ◽  
Antimicrobial Agents ◽  
Biological Evaluation ◽  
Spectroscopic Techniques ◽  
Temperature Synthesis ◽  
Room Temperature Synthesis ◽  
Synthetic Reactions ◽  
Resistant Strains ◽  
Synthesis And Biological Evaluation

One of the principles of green chemistry emphasises on minimisation of environmental and economic impacts by developing synthetic reactions at ambient temperature and pressure.The rise of resistant strains of microorganisms is an issue of regularly expanding seriousness. Therefore, the development of new antimicrobial agents will remain a challenge for chemists. we herein report room temperature synthesis of newer heterocyclic compounds belonging to 1,3,4-oxadiazole scaffold. Their structures were confirmed using various spectroscopic techniques. These compounds were evaluated for antifungal, antibacterial and antitubercular activities.

scholarly journals Synthesis and Biological Evaluation of Furo[3,2-c]pyrazole-5-carbimidates

2019 ◽  
Vol 31 (10) ◽  
pp. 2389-2393
Author(s):  
Sravanthi Siliveri ◽  
Harinadha Babu Vamaraju ◽  
Shivaraj
Keyword(s):  
Antibacterial Activity ◽  
Double Bond ◽  
Spectral Data ◽  
Biological Evaluation ◽  
Significant Protection ◽  
Edema Formation ◽  
Anti Inflammatory ◽  
Alkoxy Groups ◽  
Oxidative Difunctionalization ◽  
Synthesis And Biological Evaluation

In the present work, novel pyrazole fused dihydrofurans synthesized via a chronological addition of N-chloro succinimide and base piperidine to pyrano[3,2-c]pyrazole carbonitrile derivatives in methanol medium. Oxidative difunctionalization was done with the reagent N-chloro succinimide by the addition of both chlorine and alkoxy groups crosswise the chromene double bond. The addition of base results in the construction of dihydrofuran derivatives by ring contraction. The structures of newly synthesized compounds were characterized on the basis of physical and spectral data. Synthesized compounds were evaluated for antibacterial and anti-inflammatory activities. All the compounds exhibited significant antibacterial activity against all the four strains of bacteria and their MICs ranged between 1.56 and 12.55 μg/mL. In anti-inflammatory screening, among all the tested compounds, compounds 7, 8, 9, 11, 12, 13, 14, 16, 17 and 18 exhibited significant protection against the edema formation at a concentration of 100 mg/kg.

Design, synthesis and biological evaluation of 5′-C-piperidinyl-5′-O-aminoribosyluridines as potential antibacterial agents

2015 ◽  
Vol 13 (28) ◽  
pp. 7720-7735 ◽  
Author(s):  
Takeshi Nakaya ◽  
Akira Matsuda ◽  
Satoshi Ichikawa
Keyword(s):  
Antibacterial Activity ◽  
Antibacterial Agents ◽  
Biological Evaluation ◽  
Human Cells ◽  
Ritter Reaction ◽  
Design Synthesis ◽  
Synthesis And Biological Evaluation

Caprazamycin analogues, which were designed and synthesized via an aza-Prins–Ritter reaction, exhibit a good MraY and antibacterial activity without cytotoxicity against human cells.

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