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Wyszukujesz frazę "Antimicrobial activity" wg kryterium: Temat

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    Wyświetlanie 1-12 z 12
    Tytuł:
    Synthesis and antimicrobial activity of some new imidazolinone derivatives containing benzimidazole
    Autorzy:
    Mehta, P.
    Davadra, P.
    Shah, N.
    Joshi, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/411949.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    benzimidazole
    imidazolinone
    antimicrobial activity
    Opis:
    In this study some new o-benzimidazol-2'-yl-benzamido-p'-benzamido-2-phenyl-4-substituted phenyl-5-oxo-Imidazolines 3a-3j were synthesized. To synthesized target molecules we used various substituted oxazolone derivatives, synthesized from substituted benzaldehyde with hippuric acid. Substituted oxazolones 2a-2j were reacted with carbohydrazide derivative of benzimidazole 1 in presence of pyridine as base to obtained substituted imidazolinone derivatives. All synthesized compounds were characterized by IR, 1H NMR, elemental analysis and further supported by mass spectroscopy. All synthesized compounds were screened for their antimicrobial activity against gram positive and gram negative bacteria which showed moderate to good activity. All compounds showing good to moderate active against fungal strain as compare to standard drug.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 10; 74-80
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis, characterization and antimicrobial activity of 2-azetidinone derivatives of benzimidazoles
    Autorzy:
    Mehta, P.
    Davadra, P.
    Pandya, J. R.
    Joshi, H. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/412088.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    2-azitidinone
    benzimidazole
    antimicrobial activity
    Opis:
    Some new 2-azetidinone derivatives possessing benzimidazole nucleus were synthesized and characterized by IR, NMR and mass spectral analysis. All synthesized compounds were screened for antimicrobial activity using cup plate method. All the compounds showed moderate to good antimicrobial activity and anti fungal activity.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 11, 2; 81-88
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis, characterization and antimicrobial activity of N’-benzylidene-5-bromothiophene-2-carbohydrazide derivatives
    Autorzy:
    Makwana, H.
    Naliapara, Y. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/411935.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    2-carbohydrazide
    Schiff base
    antimicrobial activity
    Opis:
    Some new N’-benzylidene-5-bromothiophene-2-carbohydrazide derivatives possessing thiophene nucleus were synthesized and characterized by IR, NMR and mass spectral analysis. All synthesized compounds were screened for antimicrobial activity using cup plate method. All the compounds showed moderate to good antimicrobial activity and anti fungal activity.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 14, 1; 99-105
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis, characterization of biologically potent novel chalcones bearing urea, thiourea and acetamide linkages
    Autorzy:
    Mewada, N. S.
    Shah, D. R.
    Chikhalia, K. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/412032.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Chalcone
    urea
    thiourea
    acetamide
    antimicrobial activity and antifungal activity
    Opis:
    Three series of some novel chalcone based urea, thiourea and acetamide derivatives were designed, synthesized and screened for their antimicrobial and antifungal activities. All the synthesized compounds are first reported. The structures of the compounds were elucidated with the aid of elemental analysis and spectral methods including IR, 1H-NMR spectral data. The prepared compounds were evaluated for antibacterial activity against two Gram-positive bacteria (Staphylococcus aureus, Staphylococcus pyogenus), two Gram-negative bacteria (Pseudomonas aeruginosa, Escherichia coli). The title compounds were also investigated for their antifungal activity using the broth micro dilution method. The bioassay results showed that compounds a few compounds showed good to superior in vitro antibacterial and antifungal activity.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 17, 3; 281-294
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A convergent approach for the synthesis of new pyrazolyl bipyridinyl substituted coumarin derivatives as antimicrobials
    Autorzy:
    Bhila, V. G.
    Chovatiya, Y. L.
    Patel, C. V.
    Giri, R. R.
    Brahmbhatt, D. I.
    Powiązania:
    https://bibliotekanauki.pl/articles/411982.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Coumarin
    Bipyridine
    Pyrazole
    Kröhnke’s reaction
    antimicrobial activity
    Opis:
    Some new 3-[3-(1-phenyl-3-aryl-1H-pyrazol-4-yl)acryloyl]coumarins 3a-f were synthesized (coumarin chalcones) by the condensation of various 3-acetyl coumarins 1 and appropriate 1-phenyl-3-aryl-1H-pyrazole-4-carbaldehyde 2. These coumarin chalcones 3a-f were then employed for the synthesis of pyrazolyl bipyridinyl substituted coumarins 7a-f, 8a-f, and 9a-f under Krohnke’s reaction condition. The characterization of all the synthesized compounds was carried out by elemental analysis, IR, 1H-NMR, 13C-NMR, DEPT-135 and mass spectral analysis. In addition to that, in vitro antimicrobial competency of the title compounds was assessed against selected pathogens. Compounds 3b, 3e, 7b, 8b, 8c and 9b exhibited excellent antimicrobial activity and said to be the most proficient members of the series.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2015, 40; 1-16
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microwave assisted synthesis of 2,5-distyryl-1,3,4-oxadiazole derivatives as anti microbial agents
    Autorzy:
    Namera, D. L.
    Rathod, J. B.
    Maheta, R. H.
    Bhoya, U. C.
    Powiązania:
    https://bibliotekanauki.pl/articles/411519.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    substituted cinnamic acid
    substituted 1,3,4-oxadiazoles
    antimicrobial activity
    Opis:
    A new series of 2,5-distyryl-1,3,4-oxadiazoles derivatives have been synthesized from cinnamic hydrazide on reaction with various cinnamic acid derivatives. The structures of synthesized compounds have been elucidated by spectral studies like IR, 1HNMR, Mass and also Elemental Analysis. Furthermore, all synthesized compounds were screened for in vitro anti microbial activity against the gram positive (Staphylococcus aureus, Pseudomonas aeruginosa) and gram negative (Escherichia coli) bacterial strain. In which some the compounds show potential inhibition against the test organisms.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 10; 46-54
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and biological activity of 1,2,4-triazolo-[3,4-b]thiadiazole as antimicrobial agents
    Autorzy:
    Vekariya, P. B.
    Pandya, J. R.
    Goswami, V.
    Joshi, H. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/412334.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    6-Fluoro chroman
    1,2,4-triazole
    triazolothiadiazole
    antimicrobial activity
    Opis:
    Some novel 6-fluoro chroman derivatives having 1,2,4-triazolo-[3,4-b]thiadiazole were synthesized and characterized by IR, NMR and mass spectral analysis. All synthesized compounds were screened for antimicrobial activity using broth dilution method. All the compounds showed good antimicrobial activity and compound 5e showed significant antibacterial activity.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 7; 45-52
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis, characterization and biological evaluation of 2,5-di-substituted 1,3,4-oxadiazole derivatives
    Autorzy:
    Makwana, H.
    Naliapara, Y. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/412282.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    substituted 1,2,3,4-oxadiazoles
    phosphoric anhydride
    antimicrobial activity
    Opis:
    We have reported some novel 1,3,4-oxadiazole synthesized by conventional method .The reaction of 5-bromothiophene-2-carbohydrazide and different benzoic acid derivatives reflux in toluene using phosphorus oxychloride as a catalyst, yielded a series of 2,5-di-substituted 1,3,4-oxadiazole HM-2a to HM-2t. The newly synthesized 2,5-di-substituted 1,3,4-oxadiazole were purified by column chromatography and characterized by IR, Mass, 1H NMR, 13C NMR spectroscopy and elemental analysis. All synthesized compounds were screened for antimicrobial activity using cup plate method. All the compounds showed moderate to good antimicrobial activity and anti fungal activity.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 15; 48-54
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and antimicrobial screening of some new pyrimido[1,2-a]benzimidazole derivatives
    Autorzy:
    Shah, N. M.
    Joshi, H. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/411967.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    2-aminobenzimidazole
    pyrimido[1,2-a]benzimidazole
    chalcone
    antimicrobial activity azoloazine
    Opis:
    Some new pyrimido[1,2-a]benzimidazole derivatives were synthesized by reacting 2-amino benzimidazole and chalcones in n-butanol at reflux temperature. In our present study we have used various heterocyclic chalcones derived from furfural and substituted acetophenones. All synthesized compounds were characterized by IR, 1H NMR and Mass spectroscopy. All synthesized compounds were screened for their antimicrobial activity against gram positive and gram negative bacteria which showed moderate to good activity.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 6; 56-60
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and antimicrobal activities of some novel triazolo[1,5-a]pyrimidine derivatives
    Autorzy:
    Gami, S. P.
    Vilapara, K. V.
    Khunt, H. R.
    Babariya, J. S.
    Naliapara, Y. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/412170.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    5-amino-1,2,4-triazole
    ketene dithioacetal
    antimicrobial activity
    triazolopyrimidine
    Opis:
    A convenient synthesis of substituted 1,2,4-triazolo[1,5-a]pyrimidine was carried out by the reaction of various ketene dithioacetals with 5-amino 1,2,4-triazole in methanol in presence of sodium methoxide. The newly synthesized compound were characterized by 1H NMR, 13C NMR, IR, MS, elemental analysis and screened for their antimicrobial activity against various strains of bacteria and fungi.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 11, 2; 127-134
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ultrasonic Assisted Synthesis, Acoustical Property and Antibacterial Activity of Some Schiff Bases
    Autorzy:
    Premalatha, R.
    Santhi, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/412100.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    substituted anilines
    3-bromo-4-fluorobenzaldehyde
    Schiff bases
    ultrasonication
    acoustical parameters and antimicrobial activity
    Opis:
    An efficient, simple clean synthesis of Schiff bases of some 4-nitroaniline/ 2,4-dinitroaniline/ 3,4-dichloroaniline / 4-methoxy-3-nitro aniline with 3-bromo-4-fluorobenzaldehyde were done by an ultrasound irradiation method. The major advantages of ultra-sonication are short reaction time, operational simplicity, high yield, easy workup and environment friendly procedure. The isolated compounds obtained by ultrasound irradiation method were characterized by UV, IR and NMR spectral data. These acoustical parameters were determined. Furthermore their antibacterial activities are screened against certain strains of bacteria and showed significant anti-microbial activity.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 14, 1; 53-64
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A comparative study of the antioxidant activity and phytochemical composition of leaves extract between three varieties of date palm tree
    Autorzy:
    Eddine, L. S.
    Ladjel, S.
    Mohamed, O. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/412430.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Phoenyx dactylifera
    polyphenol
    DPPH radical-scavenging activity
    reducing power
    antimicrobial
    south Algeria
    Opis:
    The date palm (Phoenyx dactylifera) consisted, for the people of southern Algeria, as tree of providence. Dates and their extracts are also used for many centuries as a medicine against allergy, inflammation, constipation and gastro-protective; they also have a high antibacterial and antioxidant activity. However, no studies are conducted to evaluate the extract from the leaves of date palm (Phoenyx dactylifera) in point of view of phytochemical composition, antimicrobial and the antioxidant activity. In this study, we have determined the phenolic compounds, antioxidant and antimicrobial activity of methanolic extracts from three varieties of leaves tree. According to the results the leaves extracts have very important values for polyphenols (215.24 to 156.46 mg GAE / g DW) and high antioxidant activity (324. 45 to 206.21 mg GAE / g DW), Diphenyl-1 picrylhydrazyl radical-scavenging activity (IC50 = 2.98 to 4.83 μg / ml); also the three extracts reveal a considerable antimicrobial potency and antifungal considerable activity, the diameter of inhibition is 35.2 to 39.5 mm (concentration 50 mg/ml) for Candida albicans ATCC 90026.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 9, 2; 162-171
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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