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Conformationally restricted retinoids.

M I Dawson, P D Hobbs, K Derdzinski

    Journal of Medicinal Chemistry
    |November 1, 1984
    PubMed
    Summary
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    Researchers synthesized conformationally restricted retinoids to study cell differentiation and tumor formation. Some analogues showed potent activity and reduced toxicity compared to retinoic acid, offering potential therapeutic benefits.

    Area of Science:

    • Medicinal Chemistry
    • Organic Synthesis
    • Dermatology
    • Oncology

    Background:

    • Retinoids are crucial for regulating cell differentiation and proliferation.
    • Understanding structure-activity relationships of retinoids is key to developing targeted therapies.
    • Vitamin A deficiency impacts epithelial cell differentiation, leading to keratinization.

    Purpose of the Study:

    • To synthesize and evaluate novel, conformationally restricted retinoids.
    • To assess the compounds' efficacy in controlling cell differentiation and inhibiting tumor promotion.
    • To determine the toxicological profiles of synthesized retinoids.

    Main Methods:

    • Synthesis of a series of retinoids with restricted conformations, including cyclic analogues.

    Related Experiment Videos

  • Assay 1: Reversal of keratinization in vitamin A-deficient hamster tracheal organ culture.
  • Assay 2: Inhibition of mouse epidermal ornithine decarboxylase induction by a tumor promoter.
  • In vivo testing for inhibition of papilloma tumor formation in mice.
  • Toxicity assessment of active compounds.

    • Main Results:

    • Several synthesized retinoids demonstrated activity comparable to retinoic acid in cell differentiation assays.
    • Specific analogues, including 7, 13, 14, and 19, effectively inhibited papilloma tumor formation in mice.
    • Compounds 13 and 14 exhibited lower toxicity than retinoic acid, while analogue 7 showed higher toxicity.

    Conclusions:

    • Conformationally restricted retinoids can effectively modulate cell differentiation and inhibit tumor development.
    • Structural modifications significantly impact retinoid activity and toxicity.
    • Compounds 13 and 14 represent promising candidates for further investigation due to their favorable efficacy and safety profiles.