LADA strategy for the synthesis of unnatural amino acids and direct modifications of peptides
作者:Jun-Liang Zhou、Yun-Qi Liu、Zhan-Kui Sun
DOI:10.1007/s11426-023-1605-2
日期:2023.6
Unnatural amino acids (UAAs) are important building blocks in organic synthesis and drug discovery. They are also frequently integrated into peptides or proteins for biological studies. However, the direct and simplified synthesis of UAAs remains a great challenge. At the same time, vast known peptide modifications are based on carbon-heteroatom bonds. There are no general methods for peptide modifications
非天然氨基酸 (UAA) 是有机合成和药物发现的重要组成部分。它们还经常被整合到用于生物学研究的肽或蛋白质中。然而,UAA 的直接和简化合成仍然是一个巨大的挑战。同时,大量已知的肽修饰是基于碳-杂原子键。没有通过构建 C-C 键对肽进行修饰的通用方法。为了应对这一挑战,我们在此提出了 LADA 策略,该策略由两个步骤组成:半胱氨酸残基的选择性标记和激活,脱硫生成以碳为中心的自由基和自由基a加入烯烃以建立C-C键。这种一锅法方案具有明显的优点,例如良好的官能团耐受性、生物相容性反应条件和保留的立体化学。该策略已成功用于非天然氨基酸的合成和肽的直接修饰。