Related Experiment Video
Updated: Jun 6, 2025

A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles
Published on: December 23, 2016
An innovative strategy for radical-mediated, bidirectional controlled disulfide exchange
Bohan Li1,2, Zhenguo Zhang1,2, Raymond Tio2
1College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China.
This study introduces a new radical-initiated method for reversible disulfide metathesis under biocompatible conditions. The technique enables precise modifications of biomolecules like proteins and drugs, advancing chemical biology and therapeutic development.
Area of Science:
- Organic Chemistry
- Biochemistry
- Chemical Biology
Background:
- Metathesis reactions are vital for drug development, chemical biology, and dynamic combinatorial chemistry.
- Biocompatible and reversible metathesis reactions are crucial for manipulating biomolecules.
- Existing methods may lack efficiency or biocompatibility for sensitive applications.
Purpose of the Study:
- To develop a novel, cost-effective, and biocompatible method for disulfide metathesis.
- To enable clean and reversible formation of unsymmetrical disulfides.
- To demonstrate the application of this method for modifying diverse biomolecules.
Main Methods:
- Utilized hydroxy(tosyloxy)iodobenzene (HTIB) as a radical initiator.
- Employed excess disulfides for forward reactions and removal of volatile byproducts for reverse reactions.
- Developed an intramolecular approach using cyclic disulfides for efficient unsymmetrical disulfide synthesis.
- Validated the radical mechanism through control experiments and Electron Paramagnetic Resonance (EPR) analysis.
Main Results:
- Achieved clean and bidirectional disulfide metathesis under biocompatible conditions.
- Successfully synthesized unsymmetrical disulfides using both intermolecular and intramolecular strategies.
- Demonstrated selective and biocompatible modification of carbohydrates, drugs, amino acids, and proteins.
- Confirmed the radical mechanism underlying the reaction.
Conclusions:
- The HTIB-initiated radical disulfide metathesis offers a versatile and efficient tool for organic synthesis.
- This method provides significant implications for biomedical sciences, particularly in protein engineering and therapeutic development.
- The biocompatible nature of the reaction allows for precise manipulation of native biomolecules.
More Related Videos
09:37Combining Non-reducing SDS-PAGE Analysis and Chemical Crosslinking to Detect Multimeric Complexes Stabilized by Disulfide Linkages in Mammalian Cells in Culture
Published on: May 2, 2019
07:16Resin-Assisted Capture Coupled with Isobaric Tandem Mass Tag Labeling for Multiplexed Quantification of Protein Thiol Oxidation
Published on: June 21, 2021
Related Concept Videos
Preparation and Reactions of Thiols
Preparation and Reactions of Sulfides
Radical Reactivity: Intramolecular vs Intermolecular
Radical Reactivity: Overview
Ion Exchange
Radical Substitution: Allylic Bromination