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Phosphorylation-condensation cascade for biocatalytic synthesis of C-nucleosides
Chem Catalysis ( IF 11.5 ) Pub Date : 2024-10-02 , DOI: 10.1016/j.checat.2024.101127
Andrej Ribar, Martin Pfeiffer, Bernd Nidetzky

C-nucleosides are important targets for synthesis as anti-infective agents and building blocks for therapeutic nucleic acids. Here, we show phosphorylation-condensation cascade reaction to produce pseudouridine 5′-phosphate (Ψ5P) from d-ribose (Rib) and uracil. Rib (∼1.0 M) was phosphorylated at O5 in aqueous acetyl phosphate (1.15 M) via ATP (5 mM) by coupled kinases. Using Ψ5P C-glycosidase, Rib5P intermediate (≥90% yield) was reacted with the mole equivalent of uracil, supplied as a solid, to give Ψ5P in quantitative yield. One-pot reaction optimized for reagent composition, automated pH control, and solid-liquid mass transfer yielded ∼2.2 g Ψ5P (productivity: 38 g/L/h) from 10-mL volume. Synthetic flexibility of the cascade reaction was shown with other pentoses (d-arabinose, 2-deoxy-Rib, d-xylose) and analogs of uracil (6-amino, 2-thio, 4-thio). Collectively, we show massive intensification (≥50-fold) of the pentose phosphorylation as well as the C–C bond-forming condensation step of the overall multienzyme cascade transformation for efficient C-nucleoside (monophosphate) synthesis.

中文翻译:


用于生物催化合成 C-核苷的磷酸化-缩合级联反应



C-核苷是作为抗感染剂和治疗性核酸的构建单元的重要合成靶标。在这里,我们展示了从 d-核糖 (Rib) 和尿嘧啶产生假尿苷 5′-磷酸 (Ψ5P) 的磷酸化 - 缩合级联反应。Rib (∼1.0 M) 在乙酰磷酸水溶液 (1.15 M) 中通过 ATP (5 mM) 被偶联激酶在 O5 位点磷酸化。使用 Ψ5P C-糖苷酶,将 Rib5P 中间体(≥90% 产率)与尿嘧啶的摩尔当量(以固体形式提供)反应,得到 Ψ5P 定量产率。针对试剂组成、自动 pH 控制和固液传质优化的一锅反应,从 10 mL 体积中产生 ∼2.2 g Ψ5P(生产率:38 g/L/h)。与其他戊糖(d-阿拉伯糖、2-脱氧-Rib、d-木糖)和尿嘧啶类似物(6-氨基、2-硫代、4-硫代)一起显示出级联反应的合成灵活性。总的来说,我们展示了戊糖磷酸化的大规模增强 (≥50 倍) 以及整个多酶级联转化的 C-C 键形成缩合步骤,以实现高效的 C-核苷(单磷酸盐)合成。
更新日期:2024-10-02
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