New Journal of Chemistry.... the home of new and emerging multidisciplinary work in the chemical sciences.
Subscribers
Free access
Paper
New J. Chem., 2002, 26, 834 - 843, DOI: 10.1039/b111241d
Insight into
-hairpin stability: a structural and thermodynamic study of diastereomeric
-hairpin mimeticsMáté Erdélyi, Vratislav Langer, Anders Karlén and Adolf Gogoll
Two diastereomers of a model
-hairpin peptide mimetic were synthesized and studied with a combination of experimental (NMR, X-ray, CD, MS, IR) and computational methods (Monte Carlo/molecular mechanics calculations). The secondary structure-stabilizing effects of hydrophobic interactions and hydrogen bonding were investigated. Comparison of the extent of folded hairpin population in non-competitive, polar aprotic, and polar protic solvents illustrates the critical role of intramolecular hydrogen bonding on hairpin stability. Investigation of 1H NMR melting curves of the diastereomeric compounds in a variety of solvents allowed an evaluation of the role of hydrophobic effects on secondary structure stabilization to be made.
