Abstract

Lipid II is an essential glycolipid found in bacteria. Accessing this valuable cell wall precursor is important both for studying cell wall synthesis and for studying/identifying novel antimicrobial compounds. Herein, we describe optimizations to the modular chemical synthesis of lipid II and unnatural analogues. In particular, the glycosylation step, a critical step in the formation of the central disaccharide unit (GlcNAc-MurNAc), was optimized. This was achieved by employing the use of glycosyl donors with diverse leaving groups. The key advantage of this approach lies in its adaptability, allowing for the generation of a wide array of analogues through the incorporation of alternative building blocks at different stages of synthesis.

Beilstein J. Org. Chem. 2024, 20, 220–227. doi:10.3762/bjoc.20.22

摘要

脂质 II 是细菌中发现的一种必需糖脂。获取这种有价值的细胞壁前体对于研究细胞壁合成和研究/鉴定新型抗菌化合物都很重要。在此，我们描述了脂质 II 和非天然类似物的模块化化学合成的优化。特别是，优化了糖基化步骤，这是形成中心二糖单元（GlcNAc-MurNAc）的关键步骤。这是通过使用具有不同离去基团的糖基供体来实现的。这种方法的主要优点在于其适应性，允许通过在合成的不同阶段合并替代构建模块来生成多种类似物。

贝尔斯坦 J. 组织。化学。 2024, 20, 220–227。 doi:10.3762/bjoc.20.22