[EN] THE PRESENT INVENTION RELATES TO PROCESS FOR THE PREPARATION OF TOFACITINIB AND INTERMEDIATES THEREOF. [FR] PROCÉDÉ DE PRÉPARATION DE TOFACITINIB ET D'INTERMÉDIAIRES
[EN] THE PRESENT INVENTION RELATES TO PROCESS FOR THE PREPARATION OF TOFACITINIB AND INTERMEDIATES THEREOF. [FR] PROCÉDÉ DE PRÉPARATION DE TOFACITINIB ET D'INTERMÉDIAIRES