Design, synthesis, broad-spectrum antiproliferative activity, and kinase inhibitory effect of triarylpyrazole derivatives possessing arylamides or arylureas moieties

2016 ◽  
Vol 119 ◽  
pp. 122-131 ◽  
Author(s):  
Mahmoud M. Gamal El-Din ◽  
Mohammed I. El-Gamal ◽  
Mohammed S. Abdel-Maksoud ◽  
Kyung Ho Yoo ◽  
Chang-Hyun Oh
Keyword(s):  
Broad Spectrum ◽  
Antiproliferative Activity ◽  
Inhibitory Effect ◽  
Design Synthesis

Design, Synthesis and Biopharmacological Profile Evaluation of New 2-((4- Chlorophenoxy)Methyl)-N-(Arylcarbamothioyl)Benzamides with Broad Spectrum Antifungal Activity

2019 ◽  
Vol 23 (12) ◽  
pp. 1365-1377 ◽  
Author(s):  
Carmen Limban ◽  
Lia M. Diţu ◽  
Luminița Măruțescu ◽  
Alexandru V. Missir ◽  
Mariana C. Chifiriuc ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Broad Spectrum ◽  
De Novo ◽  
Fungal Infections ◽  
Inhibitory Effect ◽  
Aspergillus Ochraceus ◽  
Design Synthesis ◽  
Strong Inhibitory Effect ◽  
Therapeutic Alternatives ◽  
Benzamide Derivatives

The emerging antifungal resistance represents a major challenge for the treatment of severe fungal infections, highlighting the need to develop novel and efficient antifungal compounds. This study aimed to synthesize new title compounds and screen them for their antifungal activity in order to generate highly accurate structure - activity relationships of 2-((4-chlorophenoxy)methyl)-N-(arylcarbamothioyl)benzamides and their de novo derivatives and to unveil some of their mechanisms of action by flow cytometry and fluorescence microscopy. The presence of functional groups was confirmed for nine new 2-((4- chlorophenoxy) methyl)-N-(arylcarbamothioyl)benzamides, using experimental and in silico methods. The antifungal activity was assessed against a broad spectrum of 26 yeast and filamentous fungal strains, using qualitative and quantitative assays. The results showed that Candida kefyr has been the most susceptible to all tested compounds, while 1b and 1f induced a strong inhibitory effect on the filamentous fungi Alternaria rubi, Aspergillus ochraceus and A. niger strains growth. The derivative 1c in subinhibitory concentrations alsoincreased the susceptibility of Candida albicans clinical strains to azoles. Predicted drug likeness and pharmacokinetics profiles of most active compounds were compared with the standard antifungal ketoconazole. Furthermore, the potentially more potent 1c and 1f derivatives were designed and studied regarding the chemical structure-biological activity relationship and pharmacokinetics profiles versus ketoconazole. The study confirms that the new benzamide derivatives exhibited an improved pharmacokinetics profile and a good antifungal activity, acting at least by increasing membrane permeability of fungal cells. Our results are recommending them as promising candidates for the development of novel therapeutic alternatives.

Preliminary in Vitro Investigations on The Inhibitory Activity of The Original Dietary Supplement Oxidal® on Pathogenic Bacterial Strains

2020 ◽  
Vol 11 ◽  
pp. 37-43
Author(s):  
Prof. Teodora P. Popova ◽  
Toshka Petrova ◽  
Ignat Ignatov ◽  
Stoil Karadzhov
Keyword(s):  
Dietary Supplement ◽  
Broad Spectrum ◽  
Pathogenic Bacteria ◽  
Antimicrobial Agents ◽  
Clinical Effectiveness ◽  
Inhibitory Effect ◽  
Diffusion Method ◽  
Bacterial Strains ◽  
Microbial Strains

The antimicrobial action of the dietary supplement Oxidal® was tested using the classic Bauer and Kirby agar-gel diffusion method. Clinical and reference strains of Staphylococcus aureus and Escherichia coli were used in the studies. The tested dietary supplement showed a well-pronounced inhibitory effect against the microbial strains commensurable with that of the broad-spectrum chemotherapeutic agent Enrofloxacin and showed even higher activity than the broad spectrum antibiotic Thiamphenicol. The proven inhibitory effect of the tested dietary supplement against the examined pathogenic bacteria is in accordance with the established clinical effectiveness standards for antimicrobial agents.

Design, Synthesis, and In Vitro Evaluation of Tubulin‐targeting Dibenzothiazines with Antiproliferative Activity as Novel Heterocycle Building Block

ChemMedChem ◽  
2021 ◽  
Author(s):  
Walter Damián Guerra ◽  
Daniel Lucena-Agell ◽  
Rafael Hortigüela ◽  
Roberto Arturo Rossi ◽  
J. Fernando Díaz ◽  
...  
Keyword(s):  
Antiproliferative Activity ◽  
Building Block ◽  
Design Synthesis ◽  
In Vitro Evaluation

Design, synthesis and antibacterial evaluation of ocotillol derivatives with polycyclic nitrogen-containing groups

2021 ◽  
Author(s):  
Yucheng Cao ◽  
Kaiyi Wang ◽  
Jiali Wang ◽  
Haoran Cheng ◽  
Mengxin Ma ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Multidrug Resistant ◽  
Inhibitory Effect ◽  
Resistant Bacteria ◽  
Design Synthesis ◽  
In Vitro Antibacterial Activity ◽  
Strong Inhibitory Effect ◽  
Hospital Acquired ◽  
Derivatives Of

Aim: With the increasing abuse of antibacterial drugs, multidrug-resistant bacteria have become a burden on human health and the healthcare system. To find alternative compounds effective against hospital-acquired methicillin-resistant Staphylococcus aureus (HA-MRSA), novel derivatives of ocotillol were synthesized. Methods & Results: Ocotillol derivatives with polycyclic nitrogen-containing groups were synthesized and evaluated for in vitro antibacterial activity. Compounds 36–39 exhibited potent antibacterial activity against hospital-acquired MRSA, with MIC = 8–64 μg/ml. Additionally, a combination of compound 37 and the commercially available antibiotic kanamycin showed synergistic inhibitory effects, with a fractional inhibitory concentration index of ≤0.375. Conclusion: Compound 37 has a strong inhibitory effect, and this derivative has potential for use as a pharmacological tool to explore antibacterial mechanisms.

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