The paper describes the synthesis of glucose-configured sugar-lysine chimeras in which the side chain of lysine is conformationally constrained via incorporation into a d-glucose scaffold. Key step in the synthesis is a high-yielding, reductive ring opening of an exocyclic glucose-derived epoxide to form an α-hydroxyester that can be converted into chimeric sugar-lysine analogues. To demonstrate the use of these novel chimeric sugar-lysine building blocks in peptide coupling, we replaced d-lysine in the antimicrobial dipeptide sequence kW by a d-glucose-d-lysine chimera.
论文描述了
葡萄糖配置的糖-赖
氨酸嵌合体的合成,其中赖
氨酸的侧链通过整合到
葡萄糖骨架中而具有构象约束。合成中的关键步骤是高产率的环外
葡萄糖衍生的
环氧乙烷的还原开环,形成α-羟基酯,可转化为嵌合体糖-赖
氨酸类似物。为了展示这些新型嵌合体糖-赖
氨酸构建块在肽偶联中的应用,我们用
葡萄糖-赖
氨酸嵌合体替换了抗微
生物二肽序列kW中的
D-赖氨酸。