How is Protected meropenem (CAS: 96036-02-1) typically synthesized?

Protected meropenem is synthesized through a multi-step process involving the preparation of a protected β-lactam ring from a carbamic acid intermediate. Common synthetic routes involve the use of a reducing agent to generate the protected carbapenem structure, followed by various functional group manipulations. The yield and selectivity of the synthesis can vary, but the process typically requires careful control of pH and temperature. For detailed synthesis methods, see reference journals such as Organic Letters or Chemical Communications.