Stabilization of Chiral Helices for Saccharide-Linked Ethynylpyridine Oligomers Possessing a Conformationally Well-Defined Linkage
作者:Fumihiro Kayamori、Hajime Abe、Masahiko Inouye
DOI:10.1002/ejoc.201201376
日期:2013.3
octameric 2,6-pyridylene ethynylene oligomers linked to a β-D-glucopyranoside template through an o-phenylene linker were prepared and studied for their higher-order structure. These oligomers formed chiral helical structures through intramolecular hydrogen bonding between the ethynylpyridine moiety and the glucoside template. The rigidity of the o-phenylene linker stabilizes the helical structure to improve
制备了通过邻亚苯基接头连接到 β-D-吡喃葡萄糖苷模板的四聚体和八聚体 2,6-亚吡啶亚乙炔低聚物,并研究了它们的高级结构。这些低聚物通过乙炔基吡啶部分和糖苷模板之间的分子内氢键形成手性螺旋结构。邻亚苯基接头的刚性稳定了螺旋结构,以提高其 CD 活性和对质子环境的抵抗力。此外,通过添加 Cu(OTf)2 和 Zn(NO3)2 盐增强了螺旋稳定性。