Synthesis and bioactivity of propranolol analogues with a rigid skeleton. I.
作者:Yasuyoshi MIKI、Hiroko HACHIKEN、Koji NOGUCHI、Mayumi OHTA、Akiko NAKANO、Koichi TAKAHASHI、Shoji TAKEMURA
DOI:10.1248/cpb.38.3257
日期:——
The synthesis of two kinds of propranolol analogues, A and B, with a rigid skeleton was investigated. The compounds were designed to help identify the conformation involved in beta-adrenergic receptor-propranolol interaction. The key intermediate, 2-hydroxy.2,3-dihydronaphtho[1,8-bc]pyran (5), was obtained starting from acenaphthenone (1). On sequential dehydration, hydroboration, and oxidation, 5
研究了具有刚性骨架的两种普萘洛尔类似物A和B的合成。设计这些化合物以帮助鉴定参与β-肾上腺素能受体-普萘洛尔相互作用的构象。从a庚啶(1)开始获得关键中间体2-羟基.2,3-二氢萘并[1,8-bc]吡喃(5)。经依次脱水,硼氢化和氧化,得到5,得到2,3-二氢萘并[1,8-bc]吡喃-3-酮(8),其转化为化合物A。化合物5也衍生为2-甲酰基-2经由2-乙烯基化合物(12)的3,3-二氢萘并[1,8-bc]吡喃(13)。硝基甲烷与13的缩合反应,然后还原和烷基化,得到所需的化合物B。检查了A和B的β阻滞活性。