| abstract |
Abstract The compounds of the formula I wherein A, R1, R2, R3 and R4 have the significance given in claim 1, in the form of optically pure diastereomers, mixtures of diastereomers, diastereomeric racemates or mixtures of diastereomeric racemates as well as pharmaceutically usable salts thereof inhibit the activity of the natural enzyme renin and can accordingly be used in the form of pharmaceutical preparations in the control or prevention of high blood pressure and cardiac insufficiency. They can be manufactured according to various methods which are known per se. |