A novel, versatile strategy for the solid phase synthesis of phosphinic peptides is developed in which the phosphorus–carbon bond is formed on a polymer support during peptide synthesis. The formation of bis(trimethylsilyl) 1-(allyloxycarbonylamino)ethylphosphonite from 1-(allyloxycarbonylamino)ethylphosphinic acid is investigated, as well as the Michael addition of the former to a resin-bound acrylate. Conditions are also established for the clean, quantitative conversion of a resin-bound, N-terminus acryloylated peptide with bis(trimethylsilyl) 1-(allyloxycarbonylamino)ethylphosphonite. Conventional peptide synthesis is then employed to obtain a phosphinic undecapeptide in high yield and purity.
开发了一种新颖、通用的固相合成次膦肽的策略,其中在肽合成过程中在聚合物载体上形成
磷-碳键。研究了由 1-(烯丙氧基羰基
氨基)
乙基次膦酸形成双(三甲基甲
硅烷基)1-(烯丙氧基羰基
氨基)乙基
亚膦酸酯,以及前者与
树脂结合的
丙烯酸酯的迈克尔加成反应。还建立了用双(三甲基甲
硅烷基)1-(烯丙氧基羰基
氨基)乙基
亚膦酸酯清洁、定量转化
树脂结合的N-末端
丙烯酰化肽的条件。然后采用常规的肽合成来获得高产率和纯度的次膦十一肽。