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Alkylation of β-Diester Enolates: Malonic Ester Synthesis01:14

Alkylation of β-Diester Enolates: Malonic Ester Synthesis

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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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Separation of the aromatic...
Preparation of 1° Amines: Gabriel Synthesis01:28

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Direct alkylation is not a suitable method for synthesizing amines because it produces polyalkylated products. Gabriel synthesis is the most preferred method to exclusively make primary amines. The method uses phthalimide, which contains a protected form of nitrogen that participates in alkylation only once to predominantly give primary amines.
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Structure-Activity Relationships and Drug Design01:28

Structure-Activity Relationships and Drug Design

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Synthesis of α-Substituted Carbonyl Compounds: The Stork Enamine Reaction

α-Substituted ketones or aldehydes can be synthesized from enamines by the Stork enamine reaction, named after its pioneer Gilbert Stork. Enamines are useful synthetic intermediates where the lone pair on nitrogen is in conjugation with the C=C bond. They resemble enolate ions, as the resonance forms of both species have a nucleophilic α carbon.
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Related Experiment Video

Updated: Jul 18, 2026

Synthesis and Bioconjugation of Thiol-Reactive Reagents for the Creation of Site-Selectively Modified Immunoconjugates
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Steroids: partial synthesis in medicinal chemistry.

James R Hanson1

  • 1Department of Chemistry, University of Sussex, Brighton, Sussex BN1 9QJ, UK.

Natural Product Reports
|November 23, 2006
PubMed
Summary

This review covers steroid chemistry advancements from 2005, detailing reactions and synthesis of key compounds like estrogens, androgens, and vitamin D analogues.

Area of Science:

  • Organic Chemistry
  • Medicinal Chemistry
  • Biochemistry

Background:

  • Steroids are a vital class of organic compounds with diverse biological functions.
  • Understanding steroid synthesis and reactions is crucial for drug discovery and development.
  • The year 2005 saw significant progress in steroid chemistry research.

Purpose of the Study:

  • To provide a comprehensive review of steroid chemistry progress published in 2005.
  • To highlight key advancements in the synthesis and reactions of various steroid classes.
  • To serve as a reference for researchers in the field of steroid chemistry.

Main Methods:

  • Literature review of scientific articles published between January and December 2005.
  • Categorization of research based on steroid subclasses (e.g., estrogens, androgens, pregnanes, bile acids, cholestanes, vitamin D analogues).

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  • Analysis of reported chemical reactions and partial synthesis strategies.

    • Main Results:

    • Detailed overview of novel reactions and synthetic methodologies applied to estrogens, androgens, and pregnanes.
    • Summary of advancements in the chemistry of bile acid derivatives and cholestanes.
    • Compilation of progress in the synthesis and modification of vitamin D analogues.

    Conclusions:

    • The year 2005 was marked by substantial progress in steroid chemistry, offering new synthetic routes and reaction discoveries.
    • Continued research in steroid synthesis is essential for developing new therapeutic agents.
    • This review consolidates key findings, providing a valuable resource for the scientific community.