metallo-porphyrins avoiding unwanted intermolecular reactions. The binding of ZnTPP to the dipyridine-functionalised activating phenolic ester was studied by NMR titrations and modelling. Staudinger-mediated cyclisations in the presence of ZnTPP increased the yield of the cyclic dipeptide from 16% to 40%.
不愿意闭环的
苯酚酯活化的二肽已在空间屏蔽
金属
卟啉的帮助下环化,避免了不需要的分子间反应。通过 NMR 滴定和建模研究了 Zn
TPP 与联
吡啶官能化的活化
酚酯的结合。在 Zn
TPP 存在下,Staudinger 介导的环化将环状二肽的产率从 16% 提高到 40%。