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Antimalarials. 3. 3-Substituted 1-naphthalenemethanols.

J S Gillespie, S P Acharya, D A Shamblee

    Journal of Medicinal Chemistry
    |December 11, 1975
    PubMed
    Summary

    Researchers synthesized novel naphthalenemethanols, finding significant antimalarial activity against Plasmodium berghei in mice. The most potent compound, 6-chloro-alpha-(dibutylaminomethyl)-3-(3,4-dichlorophenyl)-1-naphthalenemethanol hydrochloride, showed no photosensitization.

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    Area of Science:

    • Medicinal Chemistry
    • Parasitology
    • Drug Discovery

    Background:

    • Antimalarial drug development is crucial due to Plasmodium resistance.
    • Quinolinemethanols are a known class of antimalarial compounds.
    • Exploring structural analogs can yield new therapeutic agents.

    Purpose of the Study:

    • To synthesize and evaluate novel 3-substituted 1-naphthalenemethanols.
    • To investigate their antimalarial activity against Plasmodium berghei.
    • To compare structure-activity relationships with quinolinemethanol analogs.

    Main Methods:

    • Synthesis of 22 3-substituted 1-naphthalenemethanol derivatives.
    • In vivo testing of compound efficacy against Plasmodium berghei in mice.
    • Assessment of photosensitization potential in albino mice.

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    Main Results:

    • All synthesized naphthalenemethanols demonstrated activity against Plasmodium berghei.
    • Compound 3b (6-chloro-alpha-(dibutylaminomethyl)-3-(3,4-dichlorophenyl)-1-naphthalenemethanol hydrochloride) was the most potent.
    • Tested compounds 1b and 2b did not exhibit photosensitizing properties.

    Conclusions:

    • 3-substituted 1-naphthalenemethanols represent a promising scaffold for antimalarial drug discovery.
    • The substitution pattern influences antimalarial potency.
    • Naphthalene isosteres offer a potential alternative to quinoline-based antimalarials with reduced photosensitization risk.