抽象的 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。 Beilstein J. Org. Chem. 2024, 20, 220–227. doi:10.3762/bjoc.20.22
The First Total Synthesis of Lipid II: The Final Monomeric Intermediate in Bacterial Cell Wall Biosynthesis
作者:Michael S. VanNieuwenhze、Scott C. Mauldin、Mohammad Zia-Ebrahimi、Brian E. Winger、William J. Hornback、Shankar L. Saha、James A. Aikins、Larry C. Blaszczak
DOI:10.1021/ja017386d
日期:2002.4.1
Bacterial peptidoglycan is composed of a network of beta-[1,4]-linked glyan strands that are cross-linked through pendant peptide chains. The final product, the murein sacculus, is a single, covalently closed macromolecule that precisely defines the size and shape of the bacterialcell. The recent increase in bacterial resistance to cellwall active agents has led to a resurgence of activity directed