Poly-<scp>l</scp>-proline Type II Peptide Mimics Based on the 3-Azabicyclo[3.1.0]hexane System
作者:Ahmed Mamai、Rui Zhang、Amarnath Natarajan、Jose S. Madalengoitia
DOI:10.1021/jo001201o
日期:2001.1.1
This paper describes conformational studies of proline-templated amino acids (PTAAs) based on the 3-azabicyclo[3.1.0]hexane system as well as conformational studies on short peptides composed of these PTAAs. NOE data, coupling constants, and molecular modeling are consistent with a flattened boat conformation for monomeric and oligomeric residues based on this bicyclic system. NMR studies on dimeric
本文介绍了基于3-氮杂双环[3.1.0]己烷系统的脯氨酸模板氨基酸(PTAA)的构象研究,以及由这些PTAA组成的短肽的构象研究。NOE数据,偶联常数和分子模型与基于该双环系统的单体残基和寡聚残基的扁平舟形结构一致。对二聚和三聚低聚物的NMR研究与CDCl3和D2O中的II型聚L-脯氨酸构象相符。溶液研究和分子建模预测寡聚残基的phi约为-70度,psi约为131度,chi 1约为-57度,chi 2约为-158度。