Synthesis of Apogalanthamine Analogues as α-Adrenergic Blocking Agents. XIII. Syntheses of Phenolic 8-Hydroxy-5, 6, 7, 8-tetrahydrodibenz[c, e]azocines
作者:Masaru KIHARA、Suwanna VANGVERAVONG、Kuniyoshi OHNISHI、Yasuhiro IMAKURA、Shigeru KOBAYASHI
DOI:10.1248/cpb.37.1744
日期:1989.7.25
8-tetrahydrodibenz[c, e]azocine 3, having a partial structure of adrenaline, was prepared by demethylation of the dimethoxyazocine 12 with boron tribromide. The related monophenolic 8-hydroxyazocines 4 and 5 were prepared by cyclization of the dihalogeno-β-phenylethanolamines 6c and 7c with zerovalent nickel, followed by hydrolysis and debenzylation of the O-protected dibenz[c, e]azocines 13 and 14, respectively
通过用三溴化硼将二甲氧基偶氮电影碱12脱甲基来制备具有肾上腺素部分结构的10,11-二酚型8-羟基-5,6,7,8-四氢二苯并[c,e]偶氮电影碱3。通过用零价镍将二卤代-β-苯基乙醇胺6c和7c环化,然后将O-保护的二苯并[c,e]偶氮星13和14分别水解和脱苄基反应,制备相关的单酚8-羟基偶氮星4和5。