Investigation of chiral recognition by molecular micelles with molecular dynamics simulations

ABSTRACT

Molecular dynamics simulations were used to characterize the binding of the chiral drugs chlorthalidone and lorazepam to the molecular micelle poly-(sodium undecyl-(L)-leucine-valine). The project’s goal was to characterize the nature of chiral recognition in capillary electrophoresis separations that use molecular micelles as the chiral selector. The shapes and charge distributions of the chiral molecules investigated, their orientations within the molecular micelle chiral binding pockets, and the formation of stereoselective intermolecular hydrogen bonds with the molecular micelle were all found to play key roles in determining where and how lorazepam and chlorthalidone enantiomers interacted with the molecular micelle.

GRAPHICAL ABSTRACT

KEYWORDS:

• Amino acid surfactant
• chiral recognition
• molecular dynamics simulations
• molecular micelle

Acknowledgment

The authors acknowledge the generosity of the Ralph E. Klingenmeyer family.