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Related Concept Videos

Bioreactor Controls-III01:22

Bioreactor Controls-III

Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...
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The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
Radical Autoxidation01:20

Radical Autoxidation

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Related Experiment Video

Updated: Jun 1, 2026

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
08:51

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Published on: October 24, 2017

(25R)-5a-Spiro-stane-3,12-dione.

Tie-Ying Zi, Zhi-He Zang, Ming-Yong Yuan

    Acta Crystallographica. Section E, Structure Reports Online
    |May 18, 2011
    PubMed
    Summary

    The oxidation of hecogenin yielded a novel C(27)H(40)O(4) compound. This molecule features six fused rings with specific chair and envelope conformations, offering insights into steroid chemistry.

    Area of Science:

    • Organic Chemistry
    • Steroid Chemistry
    • Structural Analysis

    Background:

    • Hecogenin is a steroidal sapogenin with a complex fused ring system.
    • Oxidation reactions are crucial for modifying steroid structures and uncovering new derivatives.

    Purpose of the Study:

    • To synthesize and characterize a novel compound derived from hecogenin.
    • To elucidate the structural features and conformational properties of the resulting molecule.

    Main Methods:

    • Oxidation of (25R)-3b-hydroxy-5a-spiro-stan-12-one (hecogenin) using Jone's reagent.
    • Chemical structure determination of the oxidation product (C(27)H(40)O(4)).

    Main Results:

    • Successful synthesis of a new compound with the molecular formula C(27)H(40)O(4).

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    Published on: October 24, 2017

    Functionalized Spirocyclic Heterocycle Synthesis and Cytotoxicity Assay
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  • The molecule possesses six alicyclic and heterocyclic rings, all trans-fused.
  • Four six-membered rings adopt chair conformations, and two five-membered rings adopt envelope conformations.
  • Conclusions:

    • The study successfully synthesized and characterized a novel hecogenin derivative.
    • The detailed structural and conformational analysis provides valuable data for steroid chemistry research.