Access to both enantiomers of substituted 2-tetralol analogs by a highly enantioselective reductase
作者:Afifa Ayu Koesoema、Daron M. Standley、Kotchakorn T.sriwong、Mayumi Tamura、Tomoko Matsuda
DOI:10.1016/j.tetlet.2020.151682
日期:2020.3
engineered form of a highly enantioselective acetophenone reductase from Geotrichum candidum NBRC 4597 (GcAPRD) to produce (S)- and (R)-2-tetralols, and their substituted analogs. All mutations targeted residue Trp288, which has been shown to restrict substrate binding, but not play a direct role in catalysis. The wild type produced (S)-alcohols with excellent enantioselectivity, while the engineered forms
对映体纯的2-四醇的(S)和(R)形式以及它们的取代类似物都是基本的药物中间体。在这里,我们利用了来自白色假丝酵母NBRC 4597(Gc APRD)的野生型和工程形式的高对映选择性苯乙酮还原酶来生产(S)-和(R)-2-四醇,及其取代类似物。所有突变均针对残基Trp288,该残基已显示可限制底物结合,但在催化中不发挥直接作用。野生型生产的(S)醇具有出色的对映选择性,而工程形式生产的(S)-或(R)-醇,取决于底物芳环上的取代基,表明对映选择性可以得到合理控制。结果,我们能够通过野生型和Trp288Ser Gc APRD分别生产98%ee(S)和81%ee(R)的潜在的抗真菌药物中间体6-羟基-2-四氢萘酚。据我们所知,这是通过合理的酶设计产生手性6-羟基-2-四氢萘酚的第一个报道。