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Bactericidal effect of acrylic acid esters

I Ibrahim, Y Hamdi, M N Tolba

    Zentralblatt Fur Bakteriologie, Parasitenkunde, Infektionskrankheiten Und Hygiene. Zweite Naturwissenschaftliche Abt.: Allgemeine, Landwirtschaftliche Und Technische Mikrobiologie
    |January 1, 1976
    PubMed
    Summary
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    Dimethylaminoethyl-alpha-phenyl-cinnamate derivatives showed antibacterial activity against Bacillus subtilis and Sarcina lutea. Para-nitro substitutions exhibited the strongest antibacterial effects, outperforming other tested derivatives.

    Area of Science:

    • Medicinal Chemistry
    • Microbiology

    Background:

    • Dimethylaminoethyl-alpha-phenyl-cinnamate derivatives are explored for potential therapeutic applications.
    • Understanding structure-activity relationships is crucial for developing effective antibacterial agents.

    Purpose of the Study:

    • To investigate the antibacterial efficacy of various substituted dimethylaminoethyl-alpha-phenyl-cinnamate compounds.
    • To determine the influence of different substituents (halogens, methyl, nitro) and their positions on antibacterial activity.

    Main Methods:

    • Synthesis and characterization of p-Cl, p-Br, p-CH3, O-NO2, M-NO2, and p-NO2 substituted dimethylaminoethyl-alpha-phenyl-cinnamate derivatives.
    • In vitro antibacterial testing against Bacillus subtilis, Sarcina lutea, and Escherichia coli using standard microbiological assays.

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    Main Results:

    • All tested compounds demonstrated antibacterial activity against the selected bacterial strains.
    • The compounds exhibited greater efficacy against Gram-positive bacteria (B. subtilis, S. lutea) compared to the Gram-negative bacterium (E. coli).
    • The para-nitro (p-NO2) substituted derivative displayed the most potent antibacterial activity among all tested compounds, surpassing ortho-nitro (O-NO2) and meta-nitro (M-NO2) analogs.

    Conclusions:

    • Substitutions on the dimethylaminoethyl-alpha-phenyl-cinnamate core significantly modulate antibacterial properties.
    • The presence and position of the nitro group, particularly at the para position, are critical for enhanced antibacterial potency.
    • These findings suggest potential for developing novel antibacterial agents based on this scaffold, with a focus on para-nitro substitution.