[EN] PROCESS FOR PREPARATION OF (1S, 3S, 5S)-2-[(2S)-2-AMINO-2-(3-HYDROXY-1-ADAMANTYL) ACETYL]-2-AZABICYCLO [3.1.0] HEXANE-3-CARBONITRILE [FR] PROCÉDÉ DE PRÉPARATION DE (1S, 3S, 5S)-2-[(2S)-2-AMINO-2-(3-HYDROXY-1-ADAMANTYL) ACÉTYL]-2-AZABICYCLO [3.1.0] HEXANE-3-CARBONITRILE