PROCEDIMIENTO PARA PREPARAR DERIVADOS DE N-(1(S)-PROPILO SUSTITUIDO)-(S)-ALANIL-(S)-PROLINA

摘要

The invention relates to a new procedure for preparing a pharmaceutically active compound of formula (I) in which R1 is ethoxycarbonyl, having an S,S,S configuration, by catalytic hydrogenation of the new compounds of formula (II) in which R1 is as defined above, R is a protecting group, compatible with the peptide bond, and, if desired, by subsequent cleavage of the protecting group R.