The present invention relates to a compound of the formula (I) ##STR1## wherein R.sup.1 stands for methyl or a group of the formula R.sup.3 --NH--(CH.sub.2).sub.4 --wherein R.sup.3 is hydrogen or a protective group being compatible with the peptide bond, R.sup.2 represents hydrogen, a protective group being compatible with the peptide bond or a cation derived from an organic or inorganic base the pharmaceutically acceptable salts and diastereomers thereof. The compounds of the invention are useful for inhibiting the effect of the angiotensin converting ensime and they can be used in the therapy as blood pressure reducing agents and for the treatment of cardiac failure and glaucoma.
The present invention relates to a compound of formula (I)
wherein
R' represents methyl or a group of the formula R3-NH-/CH2)4- wherein R3 is hydrogen or a protective group compatible with the peptide bond,
R2 represents hydrogen, a protective group compatible with the peptide bond or a cation derived from an organic or inorganic base; pharmaceutically acceptable salts and diastereomers thereof.
The compounds of the invention are useful for inhibiting the effect of the angiotensin-converting enzyme and they can be used in therapy as blood pressure reducing agents and for the treatment of cardiac failure and glaucoma.