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Updated: Jan 8, 2026
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Preparation of Enantiopure Non-Activated Aziridines and Synthesis of Biemamide B, D, and epiallo-Isomuscarine
Published on: June 13, 2022
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Hydrophilic α-Aryl-α-Diazoamides for Protein Esterification
Aniekan Okon1, Anton Morgunov1, Jinyi Yang1
1Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.
Summary
Improving protein delivery, researchers developed hydrophilic diazoamides for bioreversible protein esterification. This strategy enhances the aqueous solubility of esterified proteins, crucial for cellular delivery and downstream applications.
Area of Science:
- Biochemistry
- Cell Biology
- Organic Chemistry
Background:
- Bioreversible protein esterification enables exogenous protein delivery into mammalian cells.
- Current methods using α-aryl-α-diazoamides with a tolyl moiety often compromise protein solubility.
- Reduced solubility limits the utility of esterified proteins in downstream applications.
Purpose of the Study:
- To develop hydrophilic diazoamides for improved protein esterification and cellular delivery.
- To investigate the structure-activity relationship of diazoamides to enhance aqueous solubility.
- To optimize protein delivery agents for better solubility and efficacy.
Main Methods:
- Conducted a structure-activity relationship study on α-aryl-α-diazoamides.
- Synthesized novel hydrophilic diazoamides.
- Assessed the aqueous solubility and esterification reactivity of modified diazoamides.
- Evaluated the performance of esterified proteins in cellular delivery.
Main Results:
- Identified a correlation between high hydrogen-bond basicity and increased aqueous solubility of esterified proteins.
- Demonstrated that enhancing solubility requires maintaining lipophilicity and esterification reactivity.
- The optimal diazoamide featured an N-acetyl piperazine with a tolyl moiety, yielding highly soluble esterified proteins.
Conclusions:
- Careful tuning of hydrogen-bond basicity in α-aryl-α-diazoamides significantly improves the aqueous solubility of esterified proteins.
- The developed hydrophilic diazoamides serve as effective agents for protein esterification and cellular delivery.
- This research paves the way for next-generation esterified proteins with enhanced solubility for various applications.
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