Biocompatible hydrogelators based on bile acid ethyl amides.

Area of Science:

• Organic Chemistry
• Materials Science
• Biomedical Engineering

Background:

• Bile acids are natural compounds with diverse biological roles.
• Developing novel bile acid derivatives can lead to new materials and therapeutic agents.
• Organogelators and hydrogelators are of significant interest for drug delivery and tissue engineering.

Purpose of the Study:

• To synthesize and characterize novel bile acid ethyl amides.
• To investigate the self-assembly properties of these derivatives.
• To explore the potential biomedical applications of the synthesized compounds, particularly their gelation abilities.

Main Methods:

• Synthesis of four novel bile acid ethyl amides using a established chemical method.
• Characterization of the synthesized compounds using Infrared spectroscopy (IR), Scanning Electron Microscopy (SEM), and X-ray crystallography.
• Assessment of the cytotoxicity of the compounds.
• Evaluation of the gelation properties of the compounds in aqueous solutions.

Main Results:

• Four novel bile acid ethyl amides were successfully synthesized and characterized.
• Two of the synthesized compounds exhibited organogel formation.
• A specific lithocholic acid derivative (derivative 1) demonstrated hydrogel formation at 1% and 2% (w/v) concentrations in various aqueous media.
• Cytotoxicity studies were performed on the synthesized compounds.

Conclusions:

• The successful synthesis of novel bile acid ethyl amides expands the library of functionalized bile acids.
• The observed organogel and hydrogel formation highlights the potential of these derivatives as self-assembling materials.
• The hydrogelation capability of lithocholic acid derivative 1 is particularly promising for future biomedical applications, such as drug delivery systems or scaffolds.