three of them , namely 1- [ [ 2- ( benzoylthio ) cyclopentyl ] carbonyl ] -l-proline ( 10f ( r , s ] , 1- [ ( 2-mercaptocyclopentyl ) carbonyl ] -l-proline ( 10g ( r , s ] , and 1- [ [ 2- ( benzoylthio ) cyclobutyl ] carbonyl ] -l-proline ( 16f ( r , s ] , were found to be as potent as captopril in reducing blood pressure .
C0006938
captopril
C0020649
reducing blood pressure