A new process for resolution of an enantiomeric mixture of C3-hydroxyl substituted β-lactams is disclosed. Generally, the enantiomeric mixture is treated with an optically active proline acylating agent to form a C3-ester substituted β-lactam diastereomer or a mixture of C3-ester substituted β-lactam diastereomers followed by selective recovery of the unreacted enantiomer or of one of the diastereomers.
本发明揭示了一种解决C3-羟基取代β-内酰胺对映体混合物的新工艺。通常,使用具有光学活性的脯
氨酸酰化试剂处理对映体混合物,形成C3-酯取代的β-内酰胺对映异构体或C3-酯取代的β-内酰胺对映异构体混合物,然后选择性地回收未反应的对映异构体或其中一种对映异构体。