A highly efficient chemo-enzymatic asymmetric synthesis of chiral C4-building blocks containing a fully substituted carbon center is reported. The key transformation consists of a deracemization based on an enantioconvergent asymmetric hydrolysis of an epoxide using combined bio- and chemo-catalysis leading to a single enantiomeric product in >98% e. e. A simple switch of steps leads to kinetic resolution giving access to products of opposite configuration.
本研究报道了一种含有完全取代碳中心的手性 C4 构建模块的高效
化学酶不对称合成方法。关键的转化过程包括基于
环氧化物对映体不对称
水解的去甲基化过程,采用
生物催化和
化学催化相结合的方法,可获得单一对映体产物,其对映体转化率大于 98%。