4-Phenyl-1,2,3,4-tetrahydroisoquinolines whose structures have two hydroxy groups substituted at the 3,4- position on the 4-phenyl ring have been found to have renal vasodilating activity upon internal administration. The active ingredients are prepared by cyclizing N-(2- substituted benzyl)-1-(3,4-dimethoxyphenyl)-amino-ethanol using either a Lewis acid or an acid cyclizing agent followed by demethylation at the 3,4-dimethoxyphenyl moiety.
研究发现,
4-苯基-1,2,3,4-四氢异喹啉类药物在内服时具有扩张肾血管的活性,其结构是在 4-苯基环的 3,4- 位上有两个羟基被取代。这些活性成分是用
路易斯酸或酸性环化剂将 N-(2-取代苄基)-1-(3,4-二
甲氧基苯基)-
氨基
乙醇环化,然后在 3,4-二
甲氧基苯基上进行脱甲基反应制备而成。