Exploiting Aromatic Interactions for β-Peptide Foldamer Helix Stabilization: A Significant Design Element
作者:István M. Mándity、Antonella Monsignori、Lívia Fülöp、Enikö Forró、Ferenc Fülöp
DOI:10.1002/chem.201304448
日期:2014.4.14
area, because a higher number of aromatic side‐chains yielded larger vesicles. These results serve as an essential element for the design of helices relating to the H10/12 helix. Moreover, they open up a novel area for bioactive foldamer construction, while the hydrophobic area gained through the aromatic side‐chains may yield important receptor–ligand interaction surfaces, which can provide amplified
通过分子内主链-侧链CH-π相互作用在β-肽寡聚体中应用芳香族侧链可实现四聚体H10 / 12螺旋的稳定化。由于低聚物疏水表面的扩大,另一个目的是研究极性介质中β肽H10 / 12螺旋的自组装。NMR,ECD和分子建模结果表明,由顺式[[1 S,2 S ]-或顺式[[1 R,2 R ] -1-氨基1,2,3,4-四氢萘2-形成的低聚物-羧酸(ATENAC)和顺式-[1 R,2 S ]-或顺式-[1 S,2 R] -2-氨基环己基-3-烯基羧酸(ACHEC)残基可促进稳定的H10 / 12螺旋形成,即使在四聚体链长处也具有交替的主链构型。这些结果支持以下观点:芳香族侧链可用于稳定螺旋结构。重要的是,这是对具有四聚体链长的稳定H10 / 12螺旋的首次观察。疏水驱动的自组装是为螺旋形成的低聚物实现的,在透射电子显微镜图像中被视为囊泡。支持这些低聚物螺旋二级结构的自缔合现象取决于疏水性表面积,因