Oxazolidinones with N-methyl benzo-thiazine: synthesis and activity.
Journal name: World Journal of Pharmaceutical Research
Original article title: Synthesis and biological activities of oxazolidinones having n-methyl benzo thiazinen derivatives
The WJPR includes peer-reviewed publications such as scientific research papers, reports, review articles, company news, thesis reports and case studies in areas of Biology, Pharmaceutical industries and Chemical technology while incorporating ancient fields of knowledge such combining Ayurveda with scientific data.
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Pankaj Kumar, Jennifer Fernandes and Abhishek Kumar
World Journal of Pharmaceutical Research:
(An ISO 9001:2015 Certified International Journal)
Full text available for: Synthesis and biological activities of oxazolidinones having n-methyl benzo thiazinen derivatives
Source type: An International Peer Reviewed Journal for Pharmaceutical and Medical and Scientific Research
Copyright (license): WJPR: All rights reserved
Summary of article contents:
1) Introduction
The study focuses on the synthesis and biological activity evaluation of novel oxazolidinones, particularly those incorporating benzothiazinen derivatives. These compounds were characterized using various analytical techniques such as IR, 1H NMR, and mass spectrometry, highlighting their potential as pharmacologically active molecules. The synthesis involved the preparation of oxazolidinones from R-glycidylbutarate and para bromo aniline, followed by further derivatization with methanesulfonyl and sodium azide. The synthesized compounds were assayed for antibacterial, antifungal, and anti-inflammatory activities, addressing the growing concern of bacterial resistance and the need for new therapeutic agents.
2) Synthesis of Oxazolidinones
The synthesis process of oxazolidinones containing benzothiazinen moieties involves four key steps. First, the oxazolidinones are synthesized from specific amine derivatives and a methylene oxazolidine precursor through reflux in acetonitrile. The resulting compounds then undergo further modification using triethylamine and methanesulfonyl chloride to form sulfonate derivatives. Following this, azido derivatives are created through treatment with sodium azide in DMF. Finally, the compounds are converted to their acetamide derivatives using triphenyl phosphine and hydrochloric acid extraction. Throughout the synthesis, precautions are taken for anhydrous conditions, and the final products are purified by recrystallization.
3) Biological Evaluation of Antimicrobial Activity
The antimicrobial activity of the synthesized compounds was evaluated using the cup-plate method against various bacteria and fungi, specifically targeting strains such as Bacillus subtilis, Staphylococcus aureus, and Escherichia coli, along with Candida albicans and Aspergillus niger for antifungal activity. The results indicated that certain compounds, specifically PKSN3B, PKSN3F, and PKSN3I, displayed notable antibacterial efficacy compared to the standard antibiotic amoxicillin. Additionally, compounds PKSN3G and PKSN3J showed significant antifungal potential in comparison to fluconazole, highlighting the therapeutic promise of the newly synthesized oxazolidinones.
4) Anti-Inflammatory Activity Assay
The anti-inflammatory properties of the synthesized oxazolidinones were assessed using the carrageenan-induced rat paw edema model, with diclofenac sodium employed as a reference drug. The studies revealed that several compounds exhibited significant reductions in paw edema at various time intervals, with PKSN3B and PKSN3E demonstrating particularly strong anti-inflammatory effects. This ability to decrease inflammation, alongside their antimicrobial activities, positions these oxazolidinones as potentially valuable agents in therapeutic applications, particularly for conditions involving both infection and inflammation.
5) Conclusion
In conclusion, the research successfully synthesized a range of oxazolidinones containing benzothiazinen moieties and evaluated their biological activities. The compounds exhibited promising antibacterial and antifungal properties, as well as significant anti-inflammatory effects. Notably, PKSN3B and PKSN3E emerged as particularly effective candidates, suggesting that these novel oxazolidinones could serve as potential leads in medicinal chemistry for the treatment of bacterial infections and inflammation. Further investigations are warranted to deepen the understanding of their pharmacological profiles and therapeutic applications.
FAQ section (important questions/answers):
What are oxazolidinones and their significance in pharmaceuticals?
Oxazolidinones are five-membered nitrogen and oxygen-containing compounds known for their antibacterial properties. They are crucial in treating multi-drug-resistant Gram-positive bacterial infections, enhancing pharmacological options in modern medicine.
How were oxazolidinones synthesized in the study?
The synthesis involved several steps, including refluxing benzothiazine amine derivatives with oxazolidinone precursors, converting the products to sulfonates, and further treating them to yield acetamide derivatives, all under controlled laboratory conditions.
What types of biological activities were evaluated for synthesized compounds?
The synthesized oxazolidinones were tested for antibacterial activity against various bacteria and antifungal activity against fungi. They were also screened for anti-inflammatory properties using the carrageenan-induced paw edema method in rats.
What were the results for antibacterial and antifungal activity?
Compounds like PKSN3B, PKSN3F, and PKSN3I exhibited good antibacterial activity, while PKSN3G and PKSN3J showed significant antifungal effects against pathogens such as Candida albicans and Aspergillus niger.
What method was used for anti-inflammatory testing?
The anti-inflammatory activity was assessed through a carrageenan-induced paw edema model in rats, comparing synthesized compounds to the standard anti-inflammatory drug diclofenac.
What conclusions were drawn from the study?
The study highlighted that newly synthesized oxazolidinones with benzothiazinen moieties showed promise in anti-inflammatory and antimicrobial activities, indicating their potential as lead compounds in medicinal chemistry.
Glossary definitions and references:
Scientific and Ayurvedic Glossary list for “Oxazolidinones with N-methyl benzo-thiazine: synthesis and activity.”. This list explains important keywords that occur in this article and links it to the glossary for a better understanding of that concept in the context of Ayurveda and other topics.
1) Activity:
Activity refers to the capacity of synthesized compounds, specifically oxazolidinones with benzothiazinen moieties, to exhibit various biological effects. This is crucial for assessing their potential therapeutic applications, including antibacterial, antifungal, and anti-inflammatory properties, which are essential for drug development and biomedical research.
2) Kumar (Kumār):
Kumar is a key author in the study, representing one of the researchers collaborating in the synthesis and evaluation of new oxazolidinones. His contributions to the research highlight the importance of academic collaboration in advancing pharmaceutical chemistry, particularly in the quest for new therapeutic agents.
3) Antibiotic (Antibacterial):
Antibiotic is related to the class of drugs aimed at treating bacterial infections, including oxazolidinones evaluated in the study. The necessity for developing new antibiotics is underscored by rising drug resistance, justifying the research focus on these innovative pharmacological compounds.
4) Drug:
Drug in this context refers to pharmacologically active compounds synthesized during the research. The goal is to develop new drugs from oxazolidinones that can effectively treat bacterial infections. The potential for these compounds to become drugs is a significant focus of the study.
5) Pharmacological:
Pharmacological relates to the branch of medicine that deals with the effects of drugs on biological systems. This study's pharmacological evaluations include screening for anti-inflammatory, antibacterial, and antifungal activities, which are critical in determining the therapeutic usefulness of the synthesized compounds.
6) Study (Studying):
Study signifies the systematic investigation undertaken to synthesize and evaluate new oxazolidinone compounds. It encapsulates the comprehensive processes of drug design, synthesis, biological activity evaluation, and analysis, aiming to contribute to the body of knowledge in pharmaceutical sciences and drug development.
7) Methane:
Methane is referenced in the synthesis process as part of methane sulfonate derivatives formation. Such derivatives are crucial in enhancing the pharmacological properties of synthesized oxazolidinones. Understanding the chemical modifications using methane-related reagents helps in optimizing drug efficacy.
8) Aureus:
Aureus refers to Staphylococcus aureus, a significant pathogenic bacteria targeted in antibacterial studies of the synthesized compounds. Evaluating the efficacy of the drugs against aureus is critical due to its role in causing various infections, showcasing the importance of effective antibacterial agents.
9) Edema (Oedema):
Edema signifies the swelling that occurs due to inflammation, specifically studied in the Carrageenan-induced rat model. The evaluation of anti-inflammatory activity concerning edema is essential to assess the therapeutic potential of the synthesized oxazolidinones in treating inflammatory conditions.
10) Table:
Table refers to the structured presentation of data summarizing the results of antimicrobial and anti-inflammatory activities. Tables are vital for clarity, allowing quick reference to findings such as compound efficacy and comparison against standard drugs, thus enhancing the comprehensiveness of the study.
11) Toxicity:
Toxicity pertains to the adverse effects compounds might have on biological organisms, essential for understanding safety profiles. The study includes acute toxicity assessments to ensure that the synthesized oxazolidinones possess suitable safety margins before further pharmacological testing and potential therapeutic application.
12) Karnataka (Karṇāṭaka):
Karnataka is the Indian state where the research was conducted at NITTE University. This locality signifies the geographical context of the study, which contributes to the global landscape of pharmaceutical research, indicating the importance of regional academic institutions in advancing drug development.
13) Science (Scientific):
Science in this context encompasses the systematic study of natural phenomena, underpinning the research on oxazolidinones. Through disciplined scientific inquiry, this study contributes new knowledge to pharmacology, especially regarding drug synthesis, activity evaluation, and therapeutic applications in medicine.
14) India:
India represents the country where the research is undertaken, highlighting the role of Indian universities and institutions in global pharmaceutical research. The collaboration of its academic strengths fosters advances in drug discovery, reflecting the nation’s growing significance in biomedical research.
15) Discussion:
Discussion pertains to the analysis and interpretation of results gathered from the study. This section is vital in integrating findings, comparing them against existing literature, and elucidating implications for future research, guiding further studies for drug development and efficacy assessment.
16) Nature:
Nature represents the intrinsic characteristics and behaviors of the synthesized compounds in terms of their chemical and biological properties. Understanding the nature of oxazolidinones is fundamental for optimizing their pharmacological effects, which is critical in their eventual application as therapeutic agents.
17) Field:
Field refers to the area of study, specifically pharmacology and medicinal chemistry. Within this field, the research holds potential for impactful contributions regarding the development of new therapeutic agents, addressing urgent health issues such as antibiotic resistance and the need for novel drugs.
18) Pose:
Pose indicates the challenges and questions raised by the emergence of bacterial resistance to current antibiotics. This poses a significant threat to public health, driving the need for new antimicrobial classes, like the oxazolidinones discussed in this study, showcasing their potential to address such critical health issues.
Other Science Concepts:
Discover the significance of concepts within the article: ‘Oxazolidinones with N-methyl benzo-thiazine: synthesis and activity.’. Further sources in the context of Science might help you critically compare this page with similair documents:
Antibacterial activity, Anti-inflammatory activity, Pharmacological activity, Acute Toxicity Studies, Toxicity studies, Antifungal activity, Anti-inflammatory effect, Acute toxicity study, Pharmacological screening, Carrageenan-induced paw edema, Analytical grade chemicals, Carrageenan-induced rat paw edema model, Clinical use, Pharmaceutical Chemistry, Multi-drug resistant bacteria, Mass spectral studies, Gram positive organism, Department of Pharmaceutical Chemistry, Sodium azide, Physical data, Characterization method, Academic acknowledgment, Synthesized compound.