An Extended β-Strand Mimic for a Larger Artificial β-Sheet

Autor: James S. Nowick, Joseph W. Ziller, and Darren L. Holmes, Mason Pairish, In Quen Lee
Rok vydání: 1997
Předmět:
Zdroj: Journal of the American Chemical Society. 119:5413-5424
ISSN: 1520-5126
0002-7863
DOI: 10.1021/ja963843s
Popis: This paper reports the development of β-strand mimic B, which duplicates the hydrogen-bonding functionality of one edge of a tetrapeptide β-strand. When attached to a tripeptide by a suitable linking group, β-strand mimic B forms a hydrogen-bonded antiparallel β-sheet structure, artificial β-sheet 2. β-Strand mimic B is based upon a 5-hydrazino-2-methoxybenzoic acid building block. The first half of the paper describes synthetic, IR and 1H NMR spectroscopic, X-ray crystallographic, and molecular modeling studies of 5-hydrazino-2-methoxybenzoic acid derivatives and related molecules. These studies establish that hydrazide derivatives of 5-hydrazino-2-methoxybenzoic acid adopt a conformation similar to that of a peptide β-strand and are suitable for use as β-strand mimics. The second half of the paper describes synthetic and 1H NMR spectroscopic studies of artificial β-sheet 2 and of controls 20 and 21, which resemble the peptidomimetic and peptide strands of 2. These experiments indicate that 2 adopts a co...
Databáze: OpenAIRE