Controlling Helix Handedness in Water-Soluble Quinoline Oligoamide Foldamers
作者:Simon J. Dawson、Ádám Mészáros、Lilla Pethő、Cinzia Colombo、Márton Csékei、András Kotschy、Ivan Huc
DOI:10.1002/ejoc.201402247
日期:2014.7
For biological applications, the control of the helix handedness of water-soluble quinoline-based oligoamide foldamers has been investigated by the installation of chiral end groups at either the C or N terminus. This has resulted in the development of monomer units capable of unequivocally inducing helical sense without impacting the aqueous solubility. Furthermore, we showed that very slow helix
对于生物应用,通过在 C 或 N 末端安装手性端基来研究水溶性喹啉基寡酰胺折叠体的螺旋手性的控制。这导致开发出能够明确诱导螺旋感而不影响水溶性的单体单元。此外,我们表明可以利用水中非常缓慢的螺旋旋向反转。没有手性诱导特性的手性部分的掺入允许色谱分离 P 和 M 螺旋作为具有动力学锁定手性的非对映异构体。
High‐Affinity Hybridization of Complementary Aromatic Oligoamide Strands in Water
Various aromatic oligoamide strands were designed to self-assemble as homomeric doublehelices in water. We found that chemically inequivalent aromatic strands were able to hybridize selectively and quantitatively to form heteromeric doublehelices. The steric effects in the double helix cavity were found to be the main reason explaining the high selectivity of the hybridization.
Synthetic helicalaromatic amide foldamers and in particular those based on quinolines have recently attracted much interest due to their capacity to adopt bioinspired folded conformations that are highly stable and predictable. Additionally, the introduction of water-solubilizing side chains has allowed to evidence promising biological activities. It has also created the need for methods that may
Self-Association of Aromatic Oligoamide Foldamers into Double Helices in Water
作者:Jie Shang、Quan Gan、Simon J. Dawson、Frédéric Rosu、Hua Jiang、Yann Ferrand、Ivan Huc
DOI:10.1021/ol502259y
日期:2014.10.3
Heteromeric oligoamide foldamers composed of 8-amino-2-quinolinecarboxylic acid and 7-amino-8-fluoro-2-quinolinecarboxylic acid bearing cationic water-solubilizing side chains were prepared using solid-phase synthesis (SPS). The sequences were designed to adopt a single- or a double-helical motif depending on the nature of the solvent, DMSO or water, respectively. Self-association was demonstrated