abstract |
22. Abstract New partially retro-inverso peptides of the following general formula wherein R1 and R2 are the same or different and represent, each independently, the side chain of the aminoacid residues present in the naturally occuring peptides, X is -S-Ph or -O-CH2-Ph and Z is a hydroxy, alkoxy or amino group, are described as well as a suitable method for their preparation. The new compounds are useful as antihypertensive agents. |