A compound of the formula: ##STR1## wherein R.sup.1 is hydrogen or methyl, is prepared by condensing a compound of the formula: ##STR2## wherein R.sup.2 is alkyl, aryl or aralkyl and R.sup.1 is same as above, or a reactive derivative thereof with 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid or an ester thereof to give a compound of the formula: ##STR3## wherein R.sup.3 is an ester residue and R.sup.1 and R.sup.2 are same as above, followed by hydrolysis or ammonolysis of said compound (IV). The compound (I) is useful as a diagnostic or therapeutic agent for angiotensin-related hypertension.
本发明涉及一种化合物,其
化学式为:##STR1## 其中R.sup.1为氢或甲基,通过将
化学式为:##STR2## 其中R.sup.2为烷基、芳基或芳烷基,R.sup.1与上述相同,或其反应衍
生物与
1,2,3,4-四氢异喹啉-3-羧酸或其酯缩合,得到
化学式为:##STR3## 其中R.sup.3为酯基,R.sup.1和R.sup.2与上述相同,然后通过
水解或
氨解化合物(IV)得到化合物(I)。该化合物(I)可用作与肾素-
血管紧张素系统相关的高血压的诊断或治疗剂。