abstract |
Compounds of the formula:n nwhereinn R' is, e.g., hydrogen or hydrocarbon of from 1 to 12 carbon atoms; R 2 is, e.g., hydroxy; loweralkoxy; amino; loweralkylamino or diloweralkylamino; m is 1-3; R 3 is loweralkyl or substituted loweralkyl wherein the substituents are hydrogen, loweralkyl, or aryl; R 4 is hydroxy; loweralkanoyloxy; arloweralkanoyloxy; R 5 is hydrogen; halo; hydroxy; loweralkyl; or loweralkoxy; and pharmaceutically acceptable salts thereof are inhibitors of angiotensin I converting enzyme and are useful as antihypertensive agents and are also useful as cholecystokinin antagonists. |