Design of peptides with α,β-dehydro residues: pseudo-tripeptideN-benzyloxycarbonyl–ΔLeu–L-Ala–L-Leu–OCH3
摘要:
The title peptide N-benzyloxycarbonyl-DeltaLeu-L-Ala-L-Leu- OCH3 [methyl N-(benzyloxycarbonyl)-alpha,beta-dehydroleucyl-L-alanyl-L-leucinate], C24H35N3O6, was synthesized in the solution phase. The peptide adopts a type II' beta-turn conformation which is stabilized by an intramolecular 4 ! 1 N-H...O hydrogen bond. The crystal packing is stabilized by two intermolecular N-H...O hydrogen bonds.