کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10592814 | 981798 | 2014 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel pyrazole integrated 1,3,4-oxadiazoles: Synthesis, characterization and antimicrobial evaluation
ترجمه فارسی عنوان
1،3،4-اکسیدیاازول مجتمع پریازول نوین: سنتز، مشخصه و ارزیابی ضد میکروبی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
A novel series of 2-(5-methyl-1,3-diphenyl-1H-pyrazol-4-yl)-5-phenyl-1,3,4-oxadiazoles 7(a-m) were synthesized either by cyclization of Nâ²-benzoyl-5-methyl-1,3-diphenyl-1H-pyrazole-4-carbohydrazide 4a using POCl3 at 120 °C or by oxidative cyclization of hydrazones derived from various arylaldehyde and (E)-Nâ²-benzylidene-5-methyl-1,3-diphenyl-1H-pyrazole-4-carbohydrazide 5(a-d) using chloramine-T as oxidant. Newly synthesized compounds were characterized by analytical and spectral (IR, 1H NMR, 13C NMR and LC-MS) methods. The synthesized compounds were evaluated for their antimicrobial activity and were compared with standard drugs. The compounds demonstrated potent to weak antimicrobial activity. Among the synthesized compounds, compound 7m emerged as an effective antimicrobial agent, while compounds 7d, 7f, 7i and 7l showed good to moderate activity. The minimum inhibitory concentration of the compounds was in the range of 20-50 μg mLâ1 against bacteria and 25-55 μg mLâ1 against fungi. The title compounds represent a novel class of potent antimicrobial agents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioorganic & Medicinal Chemistry Letters - Volume 24, Issue 1, 1 January 2014, Pages 245-248
Journal: Bioorganic & Medicinal Chemistry Letters - Volume 24, Issue 1, 1 January 2014, Pages 245-248
نویسندگان
Srikantamurthy Ningaiah, Umesha K. Bhadraiah, Shridevi D. Doddaramappa, Shubakara Keshavamurthy, Chethan Javarasetty,