Chemoenzymatic Hydroxymethylation of Carboxylic Acids by Tandem Stereodivergent Biocatalytic Aldol Reaction and Chemical Decarboxylation
作者:Roser Marín-Valls、Karel Hernández、Michael Bolte、Jesús Joglar、Jordi Bujons、Pere Clapés
DOI:10.1021/acscatal.9b01646
日期:2019.8.2
building blocks for the preparation of naturally occurring and synthetic biologically active molecules. Current methodologies for the preparation of these compounds are still limited for large-scale production due to the high costs, limited microbial strains, low yields, difficult downstream processing, and limited range of structures. We report an effective chemoenzymatic method for the synthesis
手性2-取代的3-羟基羧酸衍生物是用于制备天然存在的和合成的生物活性分子的有价值的结构单元。由于高成本,有限的微生物菌株,低收率,困难的下游加工和有限的结构范围,目前制备这些化合物的方法仍限于大规模生产。我们报告了一种对映体纯的2取代的3-羟基羧酸酯的合成的有效的化学酶方法。该策略包括:(i)由两种对映体互补的2-氧代酸醛缩酶催化的将2-氧代酸立体选择性醛醇加成到甲烷中,(ii)氧化脱羧,和(iii)酯化。具有S的化合物在0.1–1.0 M的底物浓度范围内,可实现69-80%分离产率(94-99%ee)的R-构型,以及57-88%(88-98 %ee)的R对映体。为这一重要的手性结构单元类别提供了一种通用的替代途径,并强调了使用具有最小活性位点修饰的天然酶的令人兴奋的机会。