| 摘要 |
Amide derivatives of the formula: <IMAGE> wherein either R1 is aryl or heterocyclic and A1 is a direct link, or R1 is aryl or heterocyclic, or hydrogen, or halogeno, hydroxy, amino, guanidino, mercapto, carboxy, carbamoyl, or a substituted derivative thereof, and A1 is alkylene, alkenylene, cycloalkylene or cycloalkenylene; wherein X is carbonyl or hydroxymethylene or substituted derivatives thereof; wherein A2 is alkylene, alkenylene or alkylidene; wherein R2 is hydrogen or alkyl which is unsubstituted or which bears an aryl substituent, or R2 has the formula -Q2-R20 as defined below; wherein R3 is hydrogen, alkyl or a carbonyl-containing group; wherein R4 is hydrogen or alkyl which is unsubstituted or which bears a halogeno, hydroxy, amino, guanidino, carboxy, carbamoyl, mercapto, alkoxy, alkylamino, dialkylamino, cyclic amino, alkylthio, alkanoylamino, alkoxycarbonylamino, alkoxycarbonyl, alkoxycarbonyl, aryl or heterocyclyl substituent; wherein -NR5-CR6R16-Q1-R10 is an amino acid residue, R5, R6 and R16 being defined in claim 1, wherein Q1 and Q2, which may be the same or different, each is carbonyl (-CO-) or methylene (-CH2-); and wherein R10 and R20, which may be the same or different, is hydroxy, amino or a substituted derivative thereof or hydroxyamino or arylthio; or a salt thereof where appropriate; processes for their manufacture and pharmaceutical compositions containing them. The compounds are inhibitors of angiotensin converting enzyme and may be used in the treatment of hypertension.
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