The indolizidine ring system present in (±)-rhazinal, was assembled using a xanthate-based sequential intermolecular radical addition-cyclization process. The novel (±)-desethylrhazinal was prepared in seven steps in approximately 12% overall yield from 2-formylpyrrole, using this strategy.
使用基于黄药酸酯的顺序分子间自由基加成-环化过程组装存在于(±)-
鼠李糖苷中的
吲哚并
咪唑环系统。新型(±)-去乙基
鼠李糖醛经七个步骤制备,总收率约为12%2-甲酰基
吡咯,使用此策略。