We have synthesized and examined the preferred conformation of a set of N-benzhydrylglycolamide esters from N-alpha-protected (or N-alpha-blocked) alpha-amino acids. Experiments were performed in CDCl3 solution by Fourier transform infrared absorption and H-1-NMR techniques, and in the crystalline state by x-ray diffraction. The results of our analysis strongly support the view that this type of N-alpha-acylated alpha-aminoacyl esters has a marked tendency to fold into a beta-turn conformation, the nature of which is dictated by the structural propensity of the amino acid constituent at the i + 1 position.
N-Benzhydryl-Glycolamide: The First Protecting Group in Peptide Synthesis with a Strong Conformational Bias
FORMAGGIO, FERNANDO;TONIOLO, CLAUDIO
2003
Abstract
We have synthesized and examined the preferred conformation of a set of N-benzhydrylglycolamide esters from N-alpha-protected (or N-alpha-blocked) alpha-amino acids. Experiments were performed in CDCl3 solution by Fourier transform infrared absorption and H-1-NMR techniques, and in the crystalline state by x-ray diffraction. The results of our analysis strongly support the view that this type of N-alpha-acylated alpha-aminoacyl esters has a marked tendency to fold into a beta-turn conformation, the nature of which is dictated by the structural propensity of the amino acid constituent at the i + 1 position.File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.