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Related Concept Videos

Adrenergic Antagonists: Chemistry and Classification of ɑ-Receptor Blockers01:17

Adrenergic Antagonists: Chemistry and Classification of ɑ-Receptor Blockers

Adrenergic antagonists, or sympatholytics, inhibit adrenoceptor activation driven by catecholamines or agonists. Based on their adrenoceptor specificity, adrenergic blockers can be categorized into two primary groups: α-adrenergic blockers (α-blockers) and β-adrenergic blockers (β-blockers). α-blockers interact with α1 and α2 subtypes of α-adrenoceptors.
Nonselective α-blockers: Nonselective α-blockers contain haloalkylamine or imidazoline moieties. Phenoxybenzamine, with a haloalkylamine...
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Adrenergic Antagonists: Pharmacological Actions of ɑ-Receptor Blockers01:22

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α-Adrenergic antagonists, known as α-blockers, exert their effects by inhibiting α-adrenoceptors, leading to specific physiological actions. α1-blockers and α2-blockers have distinct pharmacological actions and therapeutic applications.
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Types of Receptors: Internal Receptors01:07

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Adrenergic Agonists: Chemistry and Structure-Activity Relationship01:16

Adrenergic Agonists: Chemistry and Structure-Activity Relationship

Adrenergic agonists' structure-activity relationship (SAR) determines their selectivity and efficacy. These agonists comprise a phenylethylamine moiety with an aromatic ring and an ethylamine side chain.
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Agonists are drugs that interact with specific receptors in the body to produce a biological response. When an agonist binds to a receptor, it activates or enhances the receptor's function, leading to physiological effects. The interaction between agonist drugs and receptors is crucial for their therapeutic action in various medical treatments.
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Updated: Jun 18, 2026

Detecting the Ligand-binding Domain Dimerization Activity of Estrogen Receptor Alpha Using the Mammalian Two-Hybrid Assay
09:07

Detecting the Ligand-binding Domain Dimerization Activity of Estrogen Receptor Alpha Using the Mammalian Two-Hybrid Assay

Published on: December 19, 2018

Amino-Acid-Derived Androgen Receptor Modulators.

Julius Semenya1, Elias Picazo1

  • 1Department of Chemistry, Loker Hydrocarbon Research Institute, University of Southern California, 837 Bloom Walk, Los Angeles, California 90089-1661, United States.

ACS Medicinal Chemistry Letters
|June 17, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed novel androgen receptor (AR) modulators using a streamlined synthesis from amino acids. These compounds show tunable AR antagonism, offering potential for new therapeutics in muscle wasting and cancer.

Keywords:
AAsAndrogen receptorAntiandrogensSARMsSelective androgen receptor modulators

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Published on: February 20, 2018

Area of Science:

  • Medicinal Chemistry
  • Organic Synthesis
  • Pharmacology

Background:

  • Selective androgen receptor modulators (SARMs) and antiandrogens (AAs) are crucial therapeutic agents.
  • Existing methods for enantioselective synthesis of AR modulators are limited.
  • Structural diversification of AR modulators has been hindered by synthetic constraints.

Purpose of the Study:

  • To develop an efficient and modular synthetic route for amino-acid-derived arylpropionamide androgen receptor (AR) modulators.
  • To overcome limitations in the enantioselective preparation of SARMs and AAs.
  • To explore the structural diversification of AR modulators by utilizing the α-amido heteroatom.

Main Methods:

  • A 2-3 step synthesis from commercially available enantioenriched amino acids.
  • Gram-scale synthesis yielding targets in excellent yield and high enantiomeric excess (>99% ee).
  • Binding assays and cellular reporter assays for validation.

Main Results:

  • Successful development of EPic AR modulators with a modular and efficient synthetic platform.
  • High yield and enantiomeric excess achieved in gram-scale synthesis.
  • Compounds demonstrated strong AR affinity and tunable antagonism, with some showing a biphasic partial agonism-to-antagonism profile.

Conclusions:

  • Established a powerful and operationally simple platform for rapid generation of stereochemically defined AR modulators.
  • Unlocking the α-amido heteroatom enables new structural diversification opportunities.
  • These novel AR modulators hold promise for next-generation therapeutics in muscle-wasting disorders, oncology supportive care, and androgen-related diseases.