New Norepinephrine Potentiators: Synthesis and Structure-Activity Relationships of a Series of 4-Phenyl-1,2,3,4-tetrahydroisoquinolin-4-ols.
作者:Masaru KIHARA、Minoru KASHIMOTO、Yoshimaro KOBAYASHI、Yoshimitsu NAGAO、Hideki MORITOKI
DOI:10.1248/cpb.42.67
日期:——
A variety of 1,2,3,4-tetrahydroisoquinolin-4-ols (1-6) were prepared as part of our search for new norepinephrine (NE) potentiators and to clarify the structure-activity relationships. These compounds and some previously prepared compounds were compared with 2-methyl-4-phenyl-1,2,3,4-tetrahydroisoquinolin-4-ol (PI-OH) (1a) for ability to potentiate NE. The potency, for 2-substitution, was found to
作为我们寻找新的去甲肾上腺素(NE)增强剂并阐明结构活性关系的一部分,制备了各种1,2,3,4-四氢异喹啉-4-醇(1-6)。将这些化合物和一些先前制备的化合物与2-甲基-4-苯基-1,2,3,4-四氢异喹啉-4-醇(PI-OH)(1a)进行了增强NE能力的比较。发现2-取代的效力按以下顺序排列:Me> Et> iso-Pr>H。在PI-OH的4-苯基基团对位上被卤素原子取代的化合物显示出更大的活性与PI-OH相比,观察到的取代力的顺序为Cl> Br> F>H。在PI-OH的羟基处甲基化的化合物(4)的活性大大降低。尽管PI-OH的脱氧化合物(6)可以在低浓度下增强对NE的反应,随着浓度6的增加,增强作用逐渐被抑制活性所掩盖。另外,4-环己基类似物(5)不能增强NE。这些结果表明PI-OH的β-苯基乙醇胺骨架对于产生NE增强而不伴随抑制作用的重要性。通过HPLC将外消旋的4-氯苯基类似物(