Exploring the synthetic potency of the first furanothioglycoligase through original remote activation
作者:Mélanie Almendros、Dantcho Danalev、Marc François-Heude、Pascal Loyer、Laurent Legentil、Caroline Nugier-Chauvin、Richard Daniellou、Vincent Ferrières
DOI:10.1039/c1ob06227a
日期:——
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。