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.
Design of peptides with α,β-dehydro residues: pseudo-tripeptide<i>N</i>-benzyloxycarbonyl–ΔLeu–<scp>L</scp>-Ala–<scp>L</scp>-Leu–OCH<sub>3</sub>
作者:Jyoti Makker、Sharmistha Dey、Pravindra Kumar、Tej P. Singh
DOI:10.1107/s0108270101016468
日期:2002.4.15
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.
Convenient Syntheses of Thiazoles Incorporated with α-Dehydroamino Acid and Dehydropeptide Structures
The convenientsyntheses of various thiazole α-dehydroamino acids, thiazole valine ethyl ester, and their dehydrodiand tripeptides, which are important moieties and segment of micrococcin P1 and noshiheptide, macrocyclic peptide antibiotics, were first accomplished.