PROCESS FOR THE PRODUCTION OF THE PIPERIDINE DERIVATIVE FEXOFENADINE

摘要

The present invention relates to processes for preparing certain piperidine derivatives, including fexofenadine (F) (see Scheme), the active ingredient in the non-sedating antihistamine sold in the U.S. under the designation "Allegra.RTM.". This invention also relates to novel synthetic intermediates useful in the processes of the present invention.