Abstract: The present invention relates to peptide amino-alcohol derivatives containing a tetra substituted carbon atom. Said peptides inhibit the renin and acid proteases. The invention also relates to the process for their obtention and to pharmaceutical compositions.

Abstract: The present invention relates to peptide derivatives of the general formula:R--X--Y--Statyl.sub.1 --Ala--Statyl.sub.2 --R' (1),in which:Statyl.sub.1 and Statyl.sub.2 represent the radical derived from the aminoacid statine,R denotes a hydrogen atom or an acylating group attached to the terminal amino group of the aminoacid X--,X and Y, which are identical or different, denote aminoacids of the L or D configuration if a center of asymmetry exists in the molecule, and optionally protected in their side chain, with the proviso that X and Y cannot simultaneously denote valine, andR' denotes OH, O-lower alkyl, NH.sub.2 or a group NH-R.sub.1, in which R.sub.1 represents a lower alkyl or lower aralkyl group.It also relates to a process for the preparation of the products of the formula (1) and to the medicaments containing a product of the formula (1) as the active principle.

Abstract: The present invention relates to a new process for the stepwise preparation of somatostatin enabling a product of high purity to be obtained, with high yields, from cysteine in 14 position whose acid function is protected by the phenylazobenzylsulfonylethyloxy group and thiol function is protected by the acetamidomethyl group, all the peptide coupling reactions being effected in liquid phase in the dimethylformamide, the intermediate peptides being precipitated by addition of a second solvent and purified in solid phase by washing with the aid of suitable solvents dissolving the impurities.