Compounds of the formula ##STR1## wherein Z is ##STR2## proline, pipecolic acid, an indolecarboxylic acid or an isoquinolinecarboxylic acid. These compounds are useful as cardiovascular agents.
式子为##STR1##的化合物,其中Z为##STR2##脯
氨酸、
吡啶甲酸或
异喹啉甲酸。这些化合物可用作心血管药物。