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    Wyświetlanie 1-4 z 4
    Tytuł:
    Synthesis and pharmacokinetic study of new thiazole derivatives containing pyrazole moiety
    Autorzy:
    Namera, Dipti L.
    Bhoya, Umed C.
    Shah, Anamik K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1068636.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Microwave irradiation
    Pharmacokinetic
    Pyrazole
    Thiazole
    eco-friendly
    Opis:
    For developed new eco-friendly synthetic route for the synthesis of organic compounds, here in, we have synthesized new series of thiazole derivatives 7(a-h) under microwave irradiation method using less amount of methanol as solvent and less hazardous K2CO3 as catalyst. Then after for the pharmacokinetic study, we can calculate Lipinski rules of five data using swiss ADME software, molecule 7f was fitted in ‘rules of five’ (Ro5) other compounds are showed violence in log P(o/w). The structures of all synthesized compounds are well characterized by Mass, 1H NMR, 13C NMR.
    Źródło:
    World Scientific News; 2019, 132; 277-284
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative study of chemical synthesis of dihydropyrimidine (DHPMS) derivatives by Biginelli Reaction using microwave irradiation and conventional method
    Autorzy:
    Sonawane, R.P.
    Powiązania:
    https://bibliotekanauki.pl/articles/411784.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    dihydropyrimidine derivatives
    Biginelli reaction
    microwave irradiation
    conventional method
    Opis:
    The majority of the drugs on the market today are entirely chemically synthesized in the laboratory. Several scientists had synthesized dihydropyrimidine (DHPMs) derivatives showing a wide spectrum of biological actions as antibacterials, antivirals as well as antitumor agents. This activity is principally due to presence of steriogenic carbon C4 in their structure. The current investigation is comparative study of chemically synthesis of two DHPMs derivatives by Biginelli Reaction using microwave irradiation and conventional method. The synthesis of DHPMs derivative involves a multicomponent reaction (aldehyde derivative, urea /thiourea and 1,3-dicarbonyl compounds) in presence of HCl / NH4Cl as a catalyst. Two derivative viz. 3,4-dihydropyrimidin-2-(1H)-ones and 3,4-dihydropyrimidin-2-(1H)-thiones were synthesized and characterized using IR. The melting points were obtained are 203 °C and 211 °C respectively. Microwave irradiation was easy and gave more yield than conventional method. This study will help to develop easy protocol for the synthesis of many more DHPMs derivative with high yield.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 5; 7-11
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microwave assisted sulphated titania catalyzed aldol condensation: Synthesis of some (E) 3-(2-naphthyl)-1-(substituted phenyl)-2-propen-1-ones under solvent-free conditions
    Autorzy:
    Janaki, P.
    Sekar, K. G.
    Thirunarayanan, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/411813.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    aldol condensation
    sulphated titania
    microwave irradiation
    2-propen-1-ones
    Opis:
    A series of titled chalcones were synthesized by aldol condensation between 2-naphthaldehyde and various substituted acetophenones using solid acidic solid sulphated titania catalyst under microwave irradiation. The yields of these chalcones are more than 90 %. The synthesized chalcones are characterized by their physical constants, analytical and spectroscopic data.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2014, 9; 16-22
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microwave assisted synthesis, spectral studies and antimicrobial activities of some 2′,4′-difluorophenyl chalcones
    Autorzy:
    Vijayakumar, S.
    Arulkumaran, R.
    Sundararajan, R.
    Sakthinathan, S. P.
    Suresh, R.
    Kamalakkannan, D.
    Ranganathan, K.
    Sathiyamoorthy, K.
    Mala, V.
    Vanangamudi, G.
    Thirunarayanan, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/412217.pdf
    Data publikacji:
    2013
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Microwave irradiation
    Aldol condensation
    Hydroxyapatite
    Spectral correlations
    Hammett σ constants
    antimicrobial activities
    Opis:
    Some 2′,4′-difluorophenyl chalcones have been synthesized under microwave irradiation using aldol condensation between 2,4-difluoroacetophenone and substituted benzaldehydes using catalytic amount of hydroxyapatite. The yields of the chalcones are more than 85 %. The purities of these synthesized chalcones were examined by their physical constants and spectroscopic data. The UV absorption maxima (λmax, nm), infrared stretches (ν, cm-1) of CO, fingerprint region of CHip/op, CH=CHop, C=Cop modes, NMR chemical shifts (δ, ppm) of vinyl proton, carbon and carbonyl carbons have been assigned and correlated with Hammett substituent constants, F and R parameters using single and multi-regression analysis. From the statistical analysis the effect of substituent on the above spectral frequencies can be discussed. The antimicrobial activities of these synthesized chalcones have been screened using Bauer-Kirby method.
    Źródło:
    International Letters of Chemistry, Physics and Astronomy; 2013, 9, 1; 68-86
    2299-3843
    Pojawia się w:
    International Letters of Chemistry, Physics and Astronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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