Chemoenzymatic asymmetric total synthesis of (S)-Rivastigmine using omega-transaminases

A straightforward, high-yielding, chemoenzymatic total synthesis of enantiopure (S)-Rivastigmine was developed using various omega-transaminases for the asymmetric amination of appropriate acetophenone precursors. Optimisation of the biotransformation allowed scale-up and the total synthesis of (S)-Rivastigmine.