作者:Jinhua Yang、Changliu Wang、Silin Xu、Junfeng Zhao
DOI:10.1002/anie.201811586
日期:2019.1.28
two‐step strategy for thiopeptide bond formation with readily available monothiocarboxylic acids as thioacyl donors is described. The α‐thioacyloxyenamide intermediates formed from the ynamides and monothiocarboxylic acids can be purified, characterized, and stored. The balance between their activity and stability enables them to act as effective thioacylating reagents to afford thiopeptide bonds under mild
不足的合成策略不足以将硫酰胺键位点引入肽主链,因此无法探索作为肽和蛋白质化学生物学工具的硫酰胺替代物的全部潜力。描述了一种新颖的由酰胺介导的两步策略,用于以易于获得的单硫代羧酸作为硫代酰基供体的硫肽键形成。由乙酰胺和一硫代羧酸形成的α-硫代酰氧烯酰胺中间体可以进行纯化,表征和储存。它们的活性和稳定性之间的平衡使它们能够充当有效的硫酰化试剂,在温和的反应条件下提供硫肽键。氨基酸官能团,例如OH,CONH 2,并且在巯基肽合成过程中不需要保护吲哚NH基团。这种策略的模块化性质使得在溶液和固相中都可以将硫酰胺键定点结合到肽主链中。