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Resolution of (+/-)-propranolol.

Y Yost, J L Holtzman

    Journal of Pharmaceutical Sciences
    |September 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    Two methods were developed to improve propranolol resolution using di-(p-toluoyl)tartaric acids. These advancements reduce crystallization steps and enhance resolving agent synthesis for purer propranolol.

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    Area of Science:

    • Pharmaceutical Chemistry
    • Chiral Separations
    • Organic Synthesis

    Background:

    • Propranolol is a widely used beta-blocker with chiral properties.
    • Efficient resolution of propranolol enantiomers is crucial for therapeutic efficacy and safety.
    • Existing resolution methods can be labor-intensive and require multiple crystallizations.

    Purpose of the Study:

    • To develop improved methods for the resolution of propranolol enantiomers.
    • To enhance the efficiency of the crystallization process for obtaining pure propranolol.
    • To optimize the synthesis of the chiral resolving agents.

    Main Methods:

    • Utilized both (+)- and (-)-di-(p-toluoyl)tartaric acids as resolving agents.
    • Developed a streamlined crystallization procedure.

    Related Experiment Videos

  • Investigated and improved the synthesis of the di-(p-toluoyl)tartaric acid resolving agents.

    • Main Results:

    • Significantly reduced the number of crystallizations required for pure propranolol.
    • Achieved efficient separation of propranolol enantiomers.
    • Enhanced the overall yield and purity of the resolved product.
    • Successfully improved the synthesis of the resolving agents, making them more accessible.

    Conclusions:

    • The developed methods offer a more efficient and practical approach to propranolol resolution.
    • These improvements contribute to more accessible and cost-effective production of enantiomerically pure propranolol.
    • The optimized synthesis of resolving agents further supports the scalability of this resolution technique.