Synthesis and antimicrobial properties of novel 2,5-disubstituted 1,3,4-oxadiazoles

نویسندگان

  • Harish Rajak
  • Bhupendra S. Thakur
  • Poonam Parmar
  • Pramod Kumar
  • Arun K Gupta
  • Navneet Agrawal
چکیده

The search for better antimicrobial agent due to rapid appearance of multidrug resistant microorganism and antimicrobial properties of semicarbazones and 2,5-disubstituted 1,3,4-oxadiazoles prompted us to undertake the synthesis of a few novel N-[5-(4-substitutedphenyl)-1,3,4-oxadiazol-2-yl]-N-(4substitutedbenzaldehyde)-semicarbazone and N-[5-(4-substitutedphenyl)-1,3,4-oxadiazol-2-yl]-N-[1-(4substitutedphenyl)ethanone]-semicarbazone hitherto unreported for their antimicrobial activity. The structures of the compounds were elucidated by elemental and spectral (IR, H NMR, C NMR and MS) analysis. The antimicrobial potential of the compounds was investigated using disk diffusion method. Compound VI(o) was found to possess significant antimicrobial activity during antimicrobial evaluation. Compound VI(m), VI(n) and VI(p) also demonstrated marked antimicrobial property. Structure-activity relationships among synthesized compounds were also established.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Synthesis and antimicrobial evaluation of some 2,5 disubstituted 1,3,4-oxadiazole derivatives

1,3,4-oxadiazoles are interesting compounds because of their valuable biological effects such as cytotoxic, antibacterial, antifungal, and anti-tubercular activities. Ethyl mandelate was treated with hydrazine hydrate to yield the corresponding acylhydrazide. Some of the 2,5 disubstituted 1,3,4-oxadiazole derivatives were prepared from acylhydrazide using three different procedures. In the firs...

متن کامل

A Simple, Practical and Efficient Method for the Synthesis of New Disubstituted 1,3,4-oxadiazoles

Reactions of  N-isocyaniminotriphenylphosphorane with α- chloroketones in the presence ofaromatic carboxylic acids proceed smoothly at room temperature and in neutral conditions toafford new disubstituted 1,3,4-oxadiazole derivatives in high yields.

متن کامل

Synthesis, In vitro Antimicrobial and Cytotoxic Activities of Some Novel Bis- 1, 3, 4-oxadiazoles

A series of novel bis-1,3,4-oxadizaoles were synthesized by oxidative cyclisation of respective Schiff bases derived from dicarbohydrazide using ceric ammonium nitrate (CAN) as catalyst. The synthesized compounds were screened for in vitro antibacterial activity against Staphylococcus aureus (MTCC 87), Escherichia coli (MTCC 46) and antifungal activity against Candida albicans (NCIM 3471) by tw...

متن کامل

Synthesis of Novel 2,5-Disubstituted-1,3,4-thiadiazoles Clubbed 1,2,4-Triazole, 1,3,4-Thiadiazole, 1,3,4-Oxadiazole and/or Schiff Base as Potential Antimicrobial and Antiproliferative Agents.

In the present study, a new series of 2,5-disubstituted-1,3,4-thiadiazole tethered 1,2,4-triazole, 1,3,4-thiadiazole, 1,3,4-oxadiazole and Schiff base derivatives were synthesized and characterized by IR, ¹H-NMR, (13)C-NMR, MS and elemental analyses. All compounds were screened for their antibacterial, antifungal and antiproliferative activity. Some of the synthesized derivatives have displayed...

متن کامل

Synthesis and Characterization of New 2,5-disubstituted-1,3,4- oxadiazoles as Possible Biological Active Compounds

GABRIELA LAURA ALMAJAN1*, STEFANIA-FELICIA BARBUCEANU1, ILEANA FARCASANU2, CONSTANTIN DRAGHICI3 1 University of Medicine and Pharmacy, Faculty of Pharmacy, Organic Chemistry Department, 6 Traian Vuia Street, 020956 Bucharest, Romania 2 University of Bucharest, Faculty of Chemistry, Organic Chemistry, Biochemistry and Catalysis Department, 90-92 Sos. Panduri, 050663, Bucharest, Romania 3 Romania...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2011