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Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)00:53

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Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
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Tandem Mass Spectrometry01:21

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Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
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Related Experiment Video

Updated: Jun 4, 2026

Discovery of New Intracellular Pathogens by Amoebal Coculture and Amoebal Enrichment Approaches
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Published on: October 27, 2013

Discovery and ADMET: Where are we now.

Dennis A Smith1

  • 1Pharmacokinetics, Dynamics and Metabolism, Pfizer Global R & D, Sandwich, Kent CT139NJ, UK. dennis.a.smith@pfizer.com

Current Topics in Medicinal Chemistry
|February 16, 2011
PubMed
Summary

Drug metabolism science has shifted to high-throughput screening, improving drug-drug interaction studies. However, challenges remain in predicting metabolic lability and understanding metabolite roles in drug activity.

Area of Science:

  • Pharmacology and Drug Discovery
  • Biochemistry and Metabolism

Background:

  • Drug metabolism studies have transitioned from bespoke in vivo investigations to high-throughput screening.
  • Technological advancements have been significant, but drug metabolism's complex nature often results in reactive support for medicinal chemistry.
  • Traditional structure-activity relationships are less effective with modern potent ligands that fall outside established physicochemical boundaries.

Purpose of the Study:

  • To review the evolution of drug metabolism in drug discovery and development.
  • To highlight key successes and persistent challenges in the field.
  • To emphasize the importance of molecular permeability and address limitations in current strategies for metabolic lability.

Main Methods:

  • Review of historical and current practices in drug metabolism research.

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  • Analysis of technological advancements and their impact on drug discovery workflows.
  • Discussion of established and emerging challenges in predicting and managing drug metabolism.

    • Main Results:

    • Drug metabolism science has successfully characterized drug-drug interactions using advanced screening systems and computational models.
    • Despite progress, predicting metabolic lability remains a challenge, with common tactics like reducing lipophilicity or introducing halogens showing limited innovation.
    • Intrinsic molecular permeability is a critical, yet under-recognized, factor in drug development.

    Conclusions:

    • The field has made significant strides, particularly in understanding drug-drug interactions.
    • Further research is needed to address the role of metabolites in drug activity and the variability in biliary excretion.
    • A deeper understanding of fundamental disposition structure-activity relationships and molecular permeability is crucial for future drug discovery success.