precursors for the construction of numerous heterocyclic compounds of therapeutic importance. In this paper we have illustrated an efficient synthesis of highly substituted tetrahydroisoquinolines from 2H-pyran-2-ones via nucleophile-mediated ring transformation with tert-butyl-4-oxopiperidine-1-carboxylate followed by acid-mediated cleavage of the tert-butyloxycarbonyl group. The products were achieved
官能化的
四氢异喹啉是用于构建许多具有治疗重要性的
杂环化合物的便利前体。在本文中,我们已经说明了高度取代的
四氢异喹啉的有效的合成由2- ħ经由亲核体-介导的转化环
吡喃-2-酮与叔丁基-4-氧代
哌啶-1-
甲酸叔丁酯,随后通过酸介导的裂解叔-丁氧羰基。具有各种取代基的柔性,可以高收率平稳地获得产物。