Synthesis and gelation properties of a new class of α-amino acid-based sector block dendrons
作者:Hak-Fun Chow、Jie Zhang
DOI:10.1016/j.tet.2005.08.006
日期:2005.11
dendrons containing alanine, phenylalanine, and valine dendritic sectors was prepared by a solution phase peptide coupling methodology. The structures of the dendrons were fully characterized by nuclear magnetic resonance and mass spectroscopy and by optical polarimetry, and their purities were determined by size exclusion chromatography. Some of the dendrons, especially those containing phenylalanine
通过溶液相肽偶联方法制备了一系列新的基于α-氨基酸的扇形嵌段树枝状分子,其中包含丙氨酸,苯丙氨酸和缬氨酸树枝状分子。树突的结构通过核磁共振,质谱和光学极化法进行了充分表征,并通过尺寸排阻色谱法确定了其纯度。发现某些树突,特别是那些含有苯丙氨酸残基的树突与芳族溶剂形成牢固的物理凝胶。通过红外和圆二色性光谱进一步研究了凝胶化机理。发现分子间氢键和芳香族π-π堆积相互作用都是凝胶化的主要驱动力。