Enzyme-Catalyzed Cascade Michael/Cyclization Reaction for the Synthesis of 3,4-Dihydropyran Derivatives by Using a Protease
作者:Xuan Ding、Xue-Dong Zhang、Chun-Lin Dong、Zhi Guan、Yan-Hong He
DOI:10.1007/s10562-017-2275-2
日期:2018.2
the Michael/cyclization reaction between dimedone and aryl or alkyl substituted α,β-unsaturated ketones or ester for the synthesis of 3,4-dihydropyran derivatives. The products were obtained in moderate to excellent yields (46–95%) with certain enantioselectivities (up to 18% ee) for 27 examples. This process afforded a potential biocatalytic approach as alternative to chemical synthesis for 3,4-dihydropyran
摘要 灰色链霉菌 (SGP) 蛋白酶作为一种可持续的生物催化剂,已成功应用于二甲酮与芳基或烷基取代的 α,β-不饱和酮或酯之间的迈克尔/环化反应,以合成 3,4-二氢吡喃衍生物。对于 27 个实例,以中等至极好的收率(46-95%)获得了具有某些对映选择性(高达 18% ee)的产物。该过程提供了一种潜在的生物催化方法,可替代 3,4-二氢吡喃衍生物的化学合成。Graphical AbstractProtease from Streptomyces griseus (SGP) 用作合成 3,4-二氢吡喃衍生物的迈克尔加成/环化反应的催化剂