Enantioselective Aldol Addition of Acetaldehyde to Aromatic Aldehydes Catalyzed by Proline-Based Carboligases
作者:Mohammad Saifuddin、Chao Guo、Lieuwe Biewenga、Thangavelu Saravanan、Simon J. Charnock、Gerrit J. Poelarends
DOI:10.1021/acscatal.0c00039
日期:2020.2.21
Moreover, an efficient one-pot two-step chemoenzymatic route toward chiral aromatic 1,3-diols has been developed. This one-pot chemoenzymatic strategy successfully combined a highly enantioselective aldol addition step catalyzed by a proline-based carboligase [4-OT(M45T/F50A) or TAUT015] with a chemical reduction step to convert enzymatically prepared aromatic β-hydroxyaldehydes into the corresponding
芳香族β-羟醛,1,3-二醇和α,β-不饱和醛是生物活性天然产物和药物分子的宝贵前体。本文中,我们报告了乙醛与各种芳族醛的生物催化醛醇缩合反应,使用4-草酸巴豆酸酯互变异构酶[4-OT(M45T / F50A)]预先设计的变体作为碳酰化酶,得到许多芳族α,β-不饱和醛。此外,已开发出一种有效的一锅两步化学酶法,用于手性芳族1,3-二醇。这种一锅式化学酶策略成功地将基于脯氨酸的碳连接酶[4-OT(M45T / F50A)或TAUT015]催化的高对映选择性羟醛加成步骤与化学还原步骤相结合,从而将酶法制备的芳香族β-羟基醛转化为相应的1光学纯度高的,3-二醇(er (> 99:1)和良好的孤立收率(51-92%)。这些发达的(化学)酶学方法为制备各种重要的药物前体提供了替代的合成选择。