Thioglycosidic bonds are of utmost importance in biomolecules as their incorporation led to more stable glycomimetics with potential drug activities. Until now only chemical methods were available for their incorporation into glycofuranosyl conjugates. Herein, we wish to describe the use of the first furanothioglycoligase for the preparation of a great variety of thioaryl derivatives with moderate to excellent yields. Of great interest, a stable 1-thioimidoyl arabinofuranose, classically used in chemical glycosylation, was able to efficiently act as a donor through an original enzymatic remote activation mechanism. Study of the chemical structure as well as the nucleophilicity of the thiol allowed us to optimize this biocatalyzed process. As a consequence, this mutated enzyme constitutes an original, mild and eco-friendly method of thioligation.
硫代糖苷键在
生物分子中至关重要,因为它们的结合可以产生更稳定的糖模拟物,并具有潜在的药物活性。到目前为止,只有
化学方法可将其掺入
呋喃糖基缀合物中。在此,我们希望描述第一种
呋喃硫代糖连接酶用于以中等至优异的产率制备多种
硫代芳基衍
生物的用途。令人非常感兴趣的是,传统上用于
化学糖基化的稳定的1-
硫代亚
氨基阿拉伯
呋喃糖能够通过原始的酶促远程激活机制有效地充当供体。对
硫醇
化学结构和亲核性的研究使我们能够优化这种
生物催化过程。因此,这种突变酶构成了一种原始、温和且环保的
硫连接方法。