Solid-phase peptide synthesis in water. Part 3: A water-soluble N-protecting group, 2-[phenyl(methyl)sulfonio]ethoxycarbonyl tetrafluoroborate, and its application to solid phase peptide synthesis in water
作者:Keiko Hojo、Mitsuko Maeda、Koichi Kawasaki
DOI:10.1016/j.tet.2003.12.036
日期:2004.2
Chemical synthesis of peptides has been performed in various organic solvents, but the safe disposal of organic solvents is now an important environmental issue. Our aim is to be able to perform solid-phase peptide synthesis in water. For this, we have designed a new water-soluble N-protecting group, 2-[phenyl(methyl)sulfonio]ethoxycarbonyl (Pms), and have studied its introduction onto amino acids
肽的化学合成已经在各种有机溶剂中进行,但是有机溶剂的安全处理现在是一个重要的环境问题。我们的目标是能够在水中进行固相肽合成。为此,我们设计了一种新的水溶性N-保护基团2- [苯基(甲基)磺基乙氧基羰基(Pms),并已研究了其在氨基酸中的引入。通过在四氟硼酸银存在下用甲基碘处理2-(苯硫基)乙氧基羰基氨基酸来制备Pms-氨基酸。因为该反应会修饰诸如Met和Cys等含硫氨基酸,所以我们设计了一种新的试剂2- [苯基(甲基)磺基乙基-4-硝基苯基碳酸酯],将Pms基团引入氨基酸上。该试剂是稳定的结晶物质,已成功引入氨基酸(包括含硫氨基酸)中。在水中成功实现了使用Pms保护的氨基酸固相合成Leu-和Met-脑啡肽酰胺。