Homoallylglycine residues are superior precursors to orthogonally modified thioether containing polypeptides
作者:Pesach Perlin、Eric G. Gharakhanian、Timothy J. Deming
DOI:10.1039/c8cc03048k
日期:——
controllable lengths of up to 245 repeats. Poly(L-homoallylglycine), GHA, was found to adopt an α-helical conformation, which provided good solubility in organic solvents and allowed high yield functionalization of its alkene side-chains via radical promoted addition of thiols. The conformations of these derivatives were shown to be switchable between α-helical and disordered states in aqueous media using
合成均烯丙基甘氨酸N-羧基酐Hag NCA单体,并用于制备含有Hag区段的多肽,其具有可控制的多达245个重复的长度。发现聚(L-均烯丙基甘氨酸)G HA具有α-螺旋构象,其在有机溶剂中提供良好的溶解性,并通过自由基促进的硫醇加成使其烯烃侧链的高产率官能化。这些衍生物的构型显示在水介质中使用硫醚烷基化或氧化反应可在α螺旋状态和无序状态之间切换。将G HA链段掺入具有聚L的嵌段共聚物中-甲硫氨酸,M,链段提供了在分开的共多肽结构域中以不同方式正交修饰硫醚侧链的方法。该方法允许制备含有含有氧化的和烷基化的含硫醚残基的离散结构域的功能性多肽,其中每个结构域的链构象和功能可以独立地修饰。