A collection of novel azaspirocyclic β-arylethylamines was prepared in good yield and excellent diastereoselectivity by an expedient strategy that features condensation of a cyclic ketone with an amino allylsilane and a tandem aza-Sakurai cyclization to generate several different spirocyclic N-heterocycles. Subsequent elaboration of the spirocyclic scaffold was achieved via Pictet-Spengler cyclizations
通过权宜的策略制备了一系列新的氮杂螺环β-芳基
乙胺,收率高,非对映选择性优异,该策略的特征是将环酮与
氨基烯丙基
硅烷缩合,并进行串联aza-Sakurai环化反应以生成几种不同的螺环N-杂环。随后通过Pictet-Spengler环化,Suzuki交叉偶联反应,N-官能化和烯烃再官能化反应完成了螺环骨架的修饰,从而创建了多种化合物文库,其中一些化合物对sigma 1受体和跨膜蛋白具有纳摩尔浓度的亲和力。 97(TM
EM97)。