作者:David Huesmann、Olga Schäfer、Lydia Braun、Kristina Klinker、Thomas Reuter、Matthias Barz
DOI:10.1016/j.tetlet.2016.01.104
日期:2016.3
Due to its ability to reversibly crosslink proteins, cysteine has a unique role as an amino acid in nature. For controlled, asymmetric formation of disulfides from two thiols, one thiol needs to be activated. While few activating groups for cysteine have been proposed, they are usually not stable against amines making them unsuitable for solid phase peptide synthesis or amine initiated polymerization
由于其可逆地交联蛋白质的能力,半胱氨酸在自然界中作为氨基酸具有独特的作用。为了控制地从两个硫醇形成不对称的二硫键,需要激活一个硫醇。尽管已经提出了很少的半胱氨酸活化基团,但是它们通常对胺是不稳定的,这使得它们不适用于固相肽合成或α-氨基酸-N-羧基酸酐(NCA)的胺引发的聚合。在这封信中,我们描述了一系列新的硫醇活化的半胱氨酸及其NCA,并探讨了离去基团的电子缺乏与控制NCA聚合之间的联系。